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ICHEP 2020

Europe/Prague
virtual conference

virtual conference

Rupert Leitner (Charles University (CZ)), Zdenek Dolezal (Charles University (CZ))
Description

40th International Conference on High Energy Physics

ICHEP is a series of international conferences organized by the C11 commission of the International Union of Pure and Applied Physics (IUPAP). It has been held every two years since more than 50 years, and is the reference conference of particle physics where most relevant results are presented.

At ICHEP, physicists from around the world gather to share the latest advancements in particle physics, astrophysics/cosmology, and accelerator science and discuss plans for major future facilities.

Participants
  • Aaron Fienberg
  • Aaron Paul O'Neill
  • Aaron Vincent
  • Abanti Ranadhir Sahasransu
  • Abdellah Tnourji
  • Abderrazaq El Abassi
  • Abdullah Shehada
  • Abhijit Kumar Saha
  • Abhijith Gandrakota
  • Abhishek Kumar Jha
  • Abhishek Sharma
  • Abideh Jafari
  • Abtin Narimani Charan
  • Abu Ubaidah Amir Bin Ab Maalek
  • Achim Geiser
  • Achim Stahl
  • Ada Solano
  • Adam Elliott Jaspan
  • Adam Lyon
  • Adam Morris
  • Adam Para
  • Adam Smetana
  • Adam Trzupek
  • Adelina D'Onofrio
  • Adinda De Wit
  • Adrian Bevan
  • Adrian Irles
  • Adrian Salvador Salas
  • Adriana Lisboa
  • Adriano Cherchiglia
  • Adriano Di Giovanni
  • Adryanna Major
  • Afaf Wasili
  • Afiq Azraei Bin Rishinsa
  • Agni Bethani
  • Agnieszka Dziurda
  • Agnieszka Luszczak
  • Agostino De Iorio
  • Aharon Levy
  • Ahmed Ismail
  • Ahmed Tarek
  • Aidan Robson
  • Aiqiang Guo
  • Aishik Ghosh
  • AISHWARYA BHATTA
  • Ajay Kumar
  • Ajay Sharma
  • Akanksha Ahuja
  • Akihiro Minamino
  • Akimasa Ishikawa
  • Akira Takenaka
  • Akitaka Ariga
  • Akram Khan
  • Akshay Chatla
  • Alain Blondel
  • Alain Delbart
  • Alan Barr
  • Alan Cornell
  • Alan Ignacio Hernández Juàrez
  • Alan Poon
  • Alan Price
  • Alan Robert Norton
  • Alan Schwartz
  • Alan Watson
  • Albert De Roeck
  • Alberto Correa Dos Reis
  • Alberto Giampaolo
  • Alberto Lusiani
  • Alberto Martini
  • Alberto Oliva
  • Alberto Sanchez Hernandez
  • Alberto Santoro
  • Aldo Ianni
  • Alejandro De Yta Hernandez
  • Alejandro Gutierrez-Rodriguez
  • Aleksander Filip Zarnecki
  • Aleksandra Lelek
  • Aleksas Mazeliauskas
  • Aleksey Berdyugin
  • Alena Bakalova
  • Alena Mufazalova
  • Alessandro Biondini
  • Alessandro Bravar
  • Alessandro Calandri
  • Alessandro Gaz
  • Alessandro Guida
  • Alessandro Tarabini
  • Alessia Bruni
  • Alessia Saggio
  • Alessio Boletti
  • Alex Martyniuk
  • Alex Zeng Wang
  • Alexander Bachiu
  • Alexander Booth
  • Alexander Cheplakov
  • Alexander Finch
  • Alexander Froehlich
  • Alexander Held
  • Alexander Kupco
  • Alexander Kuzmin
  • Alexander Lanev
  • Alexander Lenz
  • Alexander Leopold
  • Alexander Lind
  • Alexander Mann
  • Alexander Molodozhentsev
  • Alexander Moreno Briceño
  • Alexander Morton
  • Alexander Oh
  • Alexander Parada
  • Alexander Parkhomenko
  • Alexander Philipp Kalweit
  • Alexander Silenko
  • Alexander Sorin
  • Alexander Studenikin
  • Alexander Zaytsev
  • ALEXANDR Korobov
  • Alexandr Prozorov
  • Alexandra Dobrynina
  • Alexandra Fell
  • Alexandra Neagu
  • Alexandre Arbey
  • Alexandre Beaubien
  • Alexandre Shabetai
  • Alexandre Sousa
  • Alexandre Zabi
  • Alexei Sibidanov
  • Alexeii Kurepin
  • Alexey Drutskoy
  • Alexey Elykov
  • Alexey Konovalov
  • Alexey Lichkunov
  • Alexey Lokhov
  • Alexey Petrov
  • Alexey Vladimirov
  • Alexey Yushkov
  • Alexis Plascencia
  • Alexis Vallier
  • Alexx Perloff
  • Alfonso Zerwekh
  • Alfred Goshaw
  • Alfredo Iorio
  • Ali El Moussaouy
  • Aliaksei Kachanovich
  • Alicia Wongel
  • Alina Kleimenova
  • Alison Elliot
  • Alison Roeth
  • Allison Mccarn Deiana
  • Alvaro Fernandez Casani
  • Alyssa Rae Montalbano
  • Amala Augusthy
  • Aman Sangal
  • Amanda Cooper-Sarkar
  • Amanda Steinhebel
  • AMARJIT Soni
  • Amartya Rej
  • Amber Roepe
  • Amelia Lindner
  • Amir Khan
  • Amit Adhikary
  • Amit Bashyal
  • Amitabh Yadav
  • Amol Dighe
  • Amy Rewoldt
  • Amy Tee
  • ANA BEATRIZ MINARI SANTOS
  • Ana Luisa Carvalho
  • Ana Maria Rodriguez Vera
  • Ana Marin
  • Ana Peixoto
  • Ana Rosario Cueto Gomez
  • Anamika Aggarwal
  • Anastasia Kotsokechagia
  • Anastasiia Yovych
  • Anatoli Romaniouk
  • Anatoly Evdokimov
  • Anca Tureanu
  • Anders Garritt Knospe
  • Andre Fabiano Steklain Lisboa
  • Andre Nepomuceno
  • Andre Sopczak
  • Andre Sznajder
  • Andre Vieira
  • Andrea Caputo
  • Andrea Cardini
  • Andrea Castro
  • Andrea Coccaro
  • Andrea Dainese
  • Andrea Delgado
  • Andrea Di Luca
  • Andrea Dubla
  • Andrea Fodor
  • Andrea Gabrielli
  • Andrea Giachero
  • Andrea Malara
  • Andrea Pocar
  • Andrea Rossi
  • Andrea Trapote Fernandez
  • Andreas Ekstedt
  • Andreas Hoecker
  • Andreas Mathis
  • Andreas Salzburger
  • Andreas Sven Brundtland
  • Andreas Warburton
  • Andrei Gritsan
  • Andres Guillermo Delannoy Sotomayor
  • Andres Poldaru
  • Andrew Evan Hart
  • Andrew James Lankford
  • Andrew Olivier
  • Andrew Santos
  • Andrew Scarff
  • Andrew Sutton
  • Andrew Whitbeck
  • Andrew White
  • Andrey Alexandrov
  • Andrii Usachov
  • Andrius Kirilovas
  • Andry Rakotozafindrabe
  • Andrzej Bożek
  • Andrzej Kupsc
  • Andrzej Rybicki
  • Andrzej Smykiewicz
  • Angel Fernando Campoverde Quezada
  • angela benelli
  • Angela Maria Burger
  • Angela Papa
  • Angela Romano
  • Angelo Di Canto
  • ani prabhu
  • Anil Panta
  • Anirban Das
  • Anish Goshal
  • Anita Lavania
  • Anjan Giri
  • Ankit Beniwal
  • Ann-Kathrin Perrevoort
  • Anna Chrysostomou
  • Anna Cimmino
  • Anna Cisek
  • Anna Jane Mullin
  • Anna Kaczmarska
  • Anna Lupato
  • Anna Macchiolo
  • Anna Mazzacane
  • Anna Sfyrla
  • Anna Zaborowska
  • Annapaola De Cosa
  • Anne Dabrowski
  • Anselmo Meregaglia
  • Anshika Mishra
  • Anthony Badea
  • Anthony Bwembya
  • Anthony Ezeribe
  • Anthony Morley
  • Antoine Laudrain
  • Anton Poluektov
  • Anton Rebhan
  • Anton Stepennov
  • Antonella Antonelli
  • Antonella De Santo
  • Antoni Szczurek
  • Antonia Strubig
  • Antonio Costantini
  • Antonio Gallerati
  • Antonio Giannini
  • Antonio Jesus Gomez Delegido
  • Antonio Passeri
  • Antonio Perez-Calero Yzquierdo
  • Antonio Sidoti
  • Antonio Vilela Pereira
  • Anupam Ray
  • ANUPAMA BHOL
  • Anyssa Navrer-Agasson
  • Aparajita Dattagupta
  • Apurba Tiwari
  • Ara Ioannisian
  • Aram Apyan
  • Aran Borkum
  • Arantxa Ruiz Martinez
  • Arantza Oyanguren
  • Aravindhan Venkateswaran
  • Archil Kobakhidze
  • Arefe Abghari
  • Arely Cortes Gonzalez
  • Ariane Frey
  • Arie Bodek
  • Ariel Schwartzman
  • Arisa Kubota
  • Armando Bermudez Martinez
  • Armin Fehr
  • Arnab Roy
  • Arnaud Ferrari
  • Arnd Meyer
  • Arne Christoph Reimers
  • Arpan Ghosal
  • Arran Charles Freegard
  • Artem Basalaev
  • Artem Isakov
  • Artem Kotliarov
  • Artem Popov
  • Arthur Bolz
  • Arthur Linss
  • Arturo Rodriguez Rodriguez
  • Arturo Sanchez Pineda
  • Arvin Ravanpak
  • Ashley Brooks
  • Ashley Ellen Mcdougall
  • Ashraf Mohamed
  • Ashutosh Alok
  • Ashwin Samudre
  • Asli Abdullahi
  • Asma Hadef
  • Asmaa Aboulhorma
  • Atri Bhattacharya
  • Atsuko Ichikawa
  • Atsumu Suzuki
  • Atsushi Oya
  • Atsushi Tokiyasu
  • Augusto Ceccucci
  • Aurelio Juste Rozas
  • Auriane Canesse
  • Auro Mohanty
  • Aurore Savoy-Navarro
  • Avijit Hazra
  • Axel Naumann
  • Axel Torsten Maas
  • Ayman Al-bataineh
  • Azusa Gando
  • Azwinndini Muronga
  • Babar Ali
  • Babette Dobrich
  • Badr-Eddine Ngair
  • Balasubramaniam K M
  • Barbara Alvarez Gonzalez
  • Barbara Mele
  • Barbara Trzeciak
  • Barilang Mawlong
  • Beate Heinemann
  • Beatrice Mandelli
  • Beatriz Garcia Plana
  • Bedangadas Mohanty
  • Bedrich Roskovec
  • Behrouz Khiali
  • Behzad Salmassian
  • Ben Carlson
  • Ben Davis-Purcell
  • Ben Hounsell
  • Ben Kilminster
  • Ben Nachman
  • Benedetto Di Ruzza
  • Benedict Allbrooke
  • Benedict Tobias Winter
  • Benedikt Bergmann
  • Benedikt Gocke
  • Benjamin Grinstein
  • Benjamin Guiot
  • Benjamin Jaeger
  • Benjamin Jargowsky
  • Benjamin Kerridge
  • Benjamin Rosser
  • Benjamin Safdi
  • Benjamin Schwenker
  • Bennie WARD
  • Benoit Clément
  • Benoit Lefebvre
  • Benyounes Bel Moussa
  • Bernd Riederer
  • Bernhard Holzer
  • Bertrand Echenard
  • Bertrand Martin Dit Latour
  • Bhavesh Chauhan
  • Bhuvaneshwari Kashi
  • Bianca Scavino
  • Biao Wang
  • Bibhuti Parida
  • Bikash Thapa
  • Biljana Mitreska
  • Bill Murray
  • Bin Yan
  • Bindu Bambah
  • Bing Li
  • Biswajit Karmakar
  • Bjoern Lehnert
  • Blaise Delaney
  • Blake Burghgrave
  • Bo Jayatilaka
  • Bo ZHENG
  • Bob Hirosky
  • Bogdan Malaescu
  • Bohdan Dudar
  • Bora Orgen
  • Boris Quintana
  • Boris Shwartz
  • Boris Tomasik
  • Bowen Zhang
  • Braden Keim Abbott
  • Brajesh Choudhary
  • Brajesh Choudhary
  • Brant T Rumberger
  • Brenda Miranda
  • Brian Francis
  • Brian Moser
  • Brian Shuve
  • Brianna Stamas
  • Brianne Hackett
  • Brigitte Bloch-Devaux
  • Brigitte Vachon
  • Brij Kishor Jashal
  • Bruna Carlos
  • Bryan Kortman
  • Buddhadeb Mondal
  • Budimir Kliček
  • Burak Bilki
  • Burt Holzman
  • Caetano Ternes Coimbra
  • Cameron Dean
  • Camilla Curatolo
  • Camilla Vittori
  • Candice Basson
  • Cari Cesarotti
  • Carl Gwilliam
  • Carla Aramo
  • Carla Bonifazi
  • Carla Göbel
  • Carla Marin Benito
  • Carla Sophie Rieger
  • Carlo Battilana
  • Carlo Enrico Pandini
  • Carlo Giunti
  • Carlo Michel Carloni Calame
  • Carlo Varni
  • Carlos Delgado
  • Carlos Granja
  • Carlos Javier Solano Salinas
  • Carlos Quezada Calonge
  • Carlos Sandoval Usme
  • Carlos Solans Sanchez
  • Carolina Bolognani
  • Carolina Sergi Lopes
  • Carolyn Gee
  • Carrie McGivern
  • Carsten Niebuhr
  • Carsten Rott
  • Caterina Doglioni
  • Catrin Bernius
  • Ce Zhang
  • Cecile Jollet
  • Cecilia Tosciri
  • Cecilia Uribe Estrada
  • Cedric Dehos
  • Cem Salih Un
  • Cenk Tuysuz
  • Cesar Atzin Mondragon Herrera
  • Cesar Castromonte
  • Chakrit Pongkitivanichkul
  • Chanchal Sharma
  • Chanda Prescod-Weinstein
  • Chang Kee Jung
  • Chang-Seong Moon
  • ChangDong Shin
  • Changzheng Yuan
  • Chaowaroj Wanotayaroj
  • Chara Kitsaki
  • Chariclia Petridou
  • Charlie Young
  • Chayan Majumdar
  • Chelsea Bartram
  • Chen Wang
  • Chen Zhou
  • cheng zhang
  • Cheng-Wei Lin
  • Cheryl Henkels
  • Chetanath Neupane
  • Chiara Pinto
  • Chiara Rizzi
  • Chiara Zampolli
  • Chieh Lin
  • Chiori Fujisawa
  • Chloe Lefebvre
  • Chris Burr
  • Chris Gubbels
  • Chris Parkes
  • Chris Thomas
  • Christian Appelt
  • Christian Farnese
  • Christian Grefe
  • Christian Gutschow
  • Christian Joram
  • Christian Nguyen
  • Christian Ohm
  • Christian Oswald
  • Christian Schmitt
  • Christian Weiser
  • Christian Wiel
  • Christiane Scherb
  • Christina Dimitriadi
  • Christine Angela McLean
  • Christoph Alt
  • Christoph Andreas Ternes
  • Christoph Schwanda
  • Christophe Ochando
  • Christophe Royon
  • Christopher Arnold Walker
  • Christopher Deutsch
  • Christopher John Parkinson
  • Christopher Jones
  • Christopher Matthies
  • Christopher Meyer
  • Christopher Palmer
  • Christopher Robyn Hayes
  • Chuangxin Lin
  • Chun-Khiang Chua
  • Chung Kao
  • Chuqiao Jiang
  • Claire Adam Bourdarios
  • Claire Gwenlan
  • Claire Lee
  • Clara Cuesta
  • Clara Elisabeth Leitgeb
  • Clara Nellist
  • Clara Ramon Alvarez
  • Claude Charlot
  • Claude GUYOT
  • Claude Leroy
  • Claudia Caterina Delogu
  • Claudia Merlassino
  • Clay Barton
  • Clemencia Mora Herrera
  • Colin Froggatt
  • Colm Murphy
  • Concezio Bozzi
  • Connie Potter
  • Connor Monaghan
  • Constantinos Skordis
  • Coralie Neubüser
  • Coraline Stasser
  • Corinne Goy
  • Cornelius Grunwald
  • Corrado Gatto
  • Cosmin Deaconu
  • Costas Andreopoulos
  • Craig Brown
  • Cristian Baldenegro Barrera
  • Cristiano Sebastiani
  • Cristina Biino
  • Cristina Botta
  • Cristina Consolandi
  • Cristina Galea
  • Cristina Lazzeroni
  • Cristina Mantilla Suarez
  • Cristián Peña
  • Cristobal Padilla
  • Cvetan Valeriev Cheshkov
  • Cyrille Praz
  • Da Liu
  • Da Xu
  • Dagmar Adamova
  • Dagmar Bendova
  • Daiki Sekihata
  • Daisy Kalra
  • Daiya Akiyama
  • Dalibor Nosek
  • Dalibor Zakoucky
  • Daljeet Kaur
  • Damir Becirevic
  • Daniel Alejandro Perez Navarro
  • Daniel Alexander Berninghoff
  • Daniel Britzger
  • Daniel Cervenkov
  • Daniel Charles Clayton
  • Daniel de Florian
  • Daniel Dobos
  • Daniel Dorner
  • Daniel Guerrero
  • Daniel Jeans
  • Daniel Johnson
  • Daniel Lewis
  • Daniel Lewis Smith
  • Daniel Louis Noel
  • Daniel Mihatsch
  • Daniel Murnane
  • Daniel Scheirich
  • Daniel Schulte
  • Daniel Tapia Takaki
  • Daniel Unverzagt
  • Daniel Winterbottom
  • Daniela Boerner
  • Daniela Bortoletto
  • Daniela Maria Koeck
  • Daniele Fasanella
  • Daniele Margarone
  • Daniele Zanzi
  • Danijela Bogavac
  • Danish Farooq Meer
  • Dante Totani
  • Daria Denisova
  • Darin Acosta
  • Dario Barberis
  • Dario Soldi
  • Darius Faroughy
  • Dariusz Miskowiec
  • Darren Price
  • Dave Charlton
  • Dave Wark
  • David Alvarez Castillo
  • David Caratelli
  • David Cinabro
  • David Colling
  • David Coward
  • David Curtin
  • David Cyncynates
  • David d'Enterria
  • David DeMuth
  • David Dobrigkeit Chinellato
  • David Duenas
  • David Gerick
  • David Henaff
  • David Hitlin
  • David Horvath
  • David Jaffe
  • David Kirchmeier
  • David Kirkby
  • David Muller
  • David Payne
  • David Richard Shope
  • David Romero Abad
  • David Rousseau
  • David Schmidt
  • David Stickland
  • David Vanegas Forero
  • David Waters
  • Davide Bruschini
  • Davide Chiesa
  • Davide Cieri
  • Davide Fazzini
  • Davide Lancierini
  • Davide Melini
  • Davide Pagani
  • Davide Pietro Mungo
  • Davide Porzio
  • Davide Sgalaberna
  • Davide Zuliani
  • Dayong Wang
  • Debashis Sahoo
  • Debjit Ghosh
  • Debora Barreiros
  • Deepak Kar
  • Deepak Tiwari
  • Deepanjali Goswami
  • Deepika Jena
  • Deepthi Kuchibhatla
  • Deng Jiawei
  • Dengfeng Zhang
  • Denise Muller
  • Deniz SUNAR CERCI
  • Dennis Roy
  • Dennis Schwarz
  • Dennis Sperlich
  • Dermot Moran
  • Desmond Mzamo Shangase
  • Despina Hatzifotiadou
  • Despoina Sampsonidou
  • Devidutta Gahan
  • Devin Mahon
  • Dhiraj Kalita
  • Diana Krupova
  • Diana Patricia Mendez Mendez
  • Diana Pawłowska
  • Dibya Sankar Chattopadhyay
  • Dibyashree Sengupta
  • Dibyendu Nanda
  • Diego Andrade
  • Diego Cardona
  • Diego Lopez Gutierrez
  • Diego Ramírez García
  • Dilson De Jesus Damiao
  • Dimitrii Krasnopevtsev
  • Dimitrios Karasavvas
  • Dimitrios Papoulias
  • Dimitris Fassouliotis
  • Dimpal Chauhan
  • Dirk Krücker
  • Divya Sachdeva
  • Dmitri Konstantinov
  • Dmitriy Kostiunin
  • Dmitry Matvienko
  • Dominik Dannheim
  • Dominik Karol Derendarz
  • Dominik Sitarek
  • Domizia Orestano
  • Donatella Lucchesi
  • Dongshuo Du
  • Doojin Kim
  • Doomnull Unwuchola
  • Doris Yangsoo Kim
  • Dorothee Schaile
  • Doug Benjamin
  • Douglas Andrew Bryman
  • Duc Bao Ta
  • Dumrongsak Rodphothong
  • Dusan Bruncko
  • Dylan Sheldon Rankin
  • Eckhard Elsen
  • Edith Zinhle Buthelezi
  • Edmond Dukes
  • Edmund Xiang Lin Ting
  • Edson Carquin Lopez
  • Eduard De La Cruz Burelo
  • Edward Blucher
  • Eftychia Tzovara
  • Eiasha Waheed
  • Eigo Shintani
  • Eimear Conroy
  • Elaine Fortes
  • Eldar Ganiev
  • Eleanor Jones
  • Elena Dall'Occo
  • Elena Villhauer
  • Elena Voevodina
  • Eli Baverfjord Rye
  • Eligio Lisi
  • Elisa Fontanesi
  • Elisa Manoni
  • Elisa Meninno
  • Elisa Minucci
  • Elisabeth Falk
  • Elisabeth Maria Niel
  • Elisabeth Petit
  • Elisabeth Schopf
  • Elisabetta Gallo
  • Elisabetta Pennacchio
  • Elisabetta Pianori
  • Elise Hinkle
  • Elise Maria Le Boulicaut
  • Eliza Melo Da Costa
  • Elizabeth Brost
  • Elizabeth Dobson
  • Elizabeth Gibney
  • Elizabeth Locci
  • Elizabeth Sexton-Kennedy
  • Elizabeth Starling
  • Elizaveta Shabalina
  • Elizaveta Zherebtsova
  • Elke Aeikens
  • Elliot Reynolds
  • Elodie Deborah Resseguie
  • Eloisa Arena
  • Eluned Anne Smith
  • Elvira Rossi
  • Elzbieta Richter-Was
  • Emanuele Angelo Bagnaschi
  • Emery Nibigira
  • Emi Kou
  • Emiliano Mocchiutti
  • Emilie Bertholet
  • Emily Conover
  • Emily Filmer
  • Emily MacDonald
  • Emily Thompson
  • Emir Muhammad
  • Emma Buchanan
  • Emma Grace Castiglia
  • Emma Torro Pastor
  • Emmanouil Vourliotis
  • Emmanuel Francois Perez
  • Emmanuel Tsesmelis
  • Emmanuele Picciau
  • Enrico Graziani
  • Enrico Lusiani
  • Eric Ballabene
  • Eric Baussan
  • Eric Howard
  • Eric Kuflik
  • Eric Madge
  • Eric Schanet
  • Eric Vazquez-Jauregui
  • Erica Polycarpo
  • Erick Jhordan Reategui Rojas
  • Esteban Curras Rivera
  • Estela Garces
  • Esther Ferrer Ribas
  • Ethan Lewis Simpson
  • Eugene Beier
  • Eunchong Kim
  • Eunkyung Lee
  • Eusebio Sanchez
  • Eva Barbara Holzer
  • Eva Brottmann Hansen
  • Evangelia Dimovasili
  • Evelin Meoni
  • Evelina Mihova Gersabeck
  • Evelyn Jean Thomson
  • Evgeny Solodov
  • Evgueni Goudzovski
  • Ewerton Belchior Batista das Chagas
  • Fabio Anulli
  • Fabio Catalano
  • Fabio Cerutti
  • Fabio Ferrari
  • Fabio Maltoni
  • Fabio Mantovani
  • Fabio Pupilli
  • Fabrizio Salvatore
  • Faiza Akbar
  • Fang Xie
  • Fanqiang Meng
  • Fares Djama
  • Farida Fassi
  • Fatma Boran
  • Federica Fabbri
  • Federica Pasquali
  • Federica Petricca
  • Federica Piazza
  • Federica Primavera
  • Federico Alessio
  • Federico Antinori
  • Federico Ceccopieri
  • Federico Meloni
  • Federico Scutti
  • Fedor Ignatov
  • Fedor Lazarev
  • Feifei Huang
  • Felix Fidelio Klitzner
  • Felix Kahlhoefer
  • Felix Müller
  • Fengpeng An
  • Fengwangdong Zhang
  • Fergus Wilson
  • Fernando Abudinén
  • Fernando Arias-Aragón
  • Fernando Carvalho
  • Fernando Gardim
  • Fernando Monticelli
  • Fernando Moucherek
  • Fidan Suljik
  • Filip Krizek
  • Filip Nechansky
  • Filip Preucil
  • Filipe Joaquim
  • Filippo Baruffaldi
  • Filippo Sala
  • Flavia De Almeida Dias
  • Florencia Canelli
  • Florian Bernlochner
  • Florian Damas
  • Florian Fischer
  • Florian Herren
  • Florian Hinterkeuser
  • Florian Jonas
  • Florian Reindl
  • Florian Reiss
  • Floyd Stecker
  • Francesca Bellini
  • Francesca Di Lodovico
  • Francesca Dordei
  • Francesca Giovacchini
  • Francesco Brizioli
  • Francesco Collamati
  • Francesco Conventi
  • Francesco Costanza
  • Francesco Dimiccoli
  • Francesco Fallavollita
  • Francesco Forti
  • Francesco Giuli
  • Francesco Hautmann
  • Francesco Mazzaschi
  • Francesco Pandolfi
  • Francesco Romeo
  • Francesco Schillaci
  • FRANCESCO Spanò
  • Francesco Tenchini
  • Francesco Terranova
  • Francesco Toschi
  • Franco Bedeschi
  • Franco Simonetto
  • Frank Filthaut
  • Frank Meier
  • Frank Sauerburger
  • Frank Siegert
  • Frank Simon
  • FRANZ MACHADO
  • Franz Muheim
  • Frederic Deliot
  • Frederic Teubert
  • Frederic Yermia
  • Frederik Ruehr
  • Fredy Ochoa
  • Freya Blekman
  • Fullana Torregrosa Esteban
  • Fulvio Piccinini
  • Furkan Dolek
  • Gabriel Corrêa
  • Gabriel Facini
  • Gabriel Gallardo
  • Gabriel Garcia Guardiano
  • Gabriel Lopez-Castro
  • Gabriel Rabanal Bolaños
  • Gabriel Ramirez Sanchez
  • Gabriela Navarro
  • Gabriella Cataldi
  • Gabriella Pasztor
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  • Tobias Fitschen
  • Tobias Hurth
  • Todd Seiss
  • Tohoku U
  • Tom Browder
  • Tom Dealtry
  • Tom Kresse
  • Tom Lord
  • Tom Neep
  • Tom Stevenson
  • Tomas Blazek
  • Tomas Dado
  • Tomas Davidek
  • Tomas Herman
  • Tomas Husek
  • Tomas Jakoubek
  • Tomas Jezo
  • Tomas Kadavy
  • Tomas Matlocha
  • Tomas Nosek
  • Tomas Sykora
  • Tomasz Dutka
  • Tomislav Vladisavljevic
  • Tommaso Boschi
  • Tommaso Chiarusi
  • Tommaso Spadaro
  • Tomohiko Tanabe
  • Tomáš Tměj
  • Tomáš Truhlář
  • Tong Qiu
  • Toni Baroncelli
  • Toni Sculac
  • Tony Doyle
  • Torben Ferber
  • Torsten Layda
  • Toru Iijima
  • Toru Tsuboyama
  • Toshi Sumida
  • Toshinori Mori
  • Toshiyuki Iwamoto
  • Tova Holmes
  • Tracey Berry
  • Traudl Hansl-Kozanecki
  • Trevor Shillington
  • Trevor Vickey
  • Tristan Andrew Ruggeri
  • Tristan Doyle
  • Tristan du Pree
  • Tuan Minh Pham
  • Tulin Mete
  • Ulla Blumenschein
  • Ulrich Mosel
  • Ulrich Uwer
  • Ulrik Egede
  • Umberto Tamponi
  • Umut Kose
  • Un-Ki Yang
  • University Bristol
  • Upalaparna Banerjee
  • Urs Achim Wiedemann
  • Urs Heller
  • Ursula Bassler
  • Uta Bilow
  • Uta Klein
  • Utkarsh Sharma
  • Uttiya Sarkar
  • Vadim Shakhov
  • Vaibhav Gupta
  • Vaibhav Rawat
  • Vaibhav Rawoot
  • Valentina Mariani
  • Valentina Raskina
  • Valentina Scotti
  • Valeri Khoze
  • Valeri Pozdniakov
  • Valerio Dao
  • Valery Chtcheguelski
  • Vandana Sahdev
  • Varsha Senthilkumar
  • Vasiliki Mitsou
  • Vera Latonova
  • Verena Ingrid Martinez Outschoorn
  • Veronica De Leo
  • Veronika Prozorova
  • Veronika Sedláková
  • Viacheslav Duk
  • Victor Andrade
  • Victor Daussy-Renaudin
  • Victor Goncalves
  • Victor Gonzalez
  • Victor Rodriguez Bouza
  • Victoria Martin
  • Vidya Sagar VOBBILISETTI
  • Viktor Pec
  • Vincent Basque
  • Vincent Boudry
  • Vincent Wong
  • Vincenzo Eduardo Padulano
  • vishnu rajagopal
  • Vishwas Gaur
  • Vit Vorobel
  • Vitalii Okhotnikov
  • Vitalii Ozvenchuk
  • Vito Manzari
  • Vivek Sharma
  • Vivek Sharma
  • Viveka Gautam
  • Viviana Cavaliere
  • Viviana Niro
  • Vladimir Chekelian
  • Vladimir Obraztsov
  • Vladimir Pastushenko
  • Vladimir Saleev
  • Vladimir Shiltsev
  • Vladyslav Lehin
  • Vlasios Petousis
  • Vojtech Pleskot
  • Vojtěch Gaďurek
  • Vojtěch Tauchman
  • Volodymyr Aushev
  • Volodymyr Takhistov
  • Vukasin Milosevic
  • Vytautas Vislavicius
  • Wafa Mahmoud
  • Wagner De Paula Carvalho
  • Walaa Elmetenawee
  • Waleed Abdallah
  • Walter Hopkins
  • Walter Luiz Alda Junior
  • Walter Marcello Bonivento
  • Wan-lei Guo
  • Wasikul Islam
  • Wataru OOTANI
  • Wei Mu
  • Wei Shan
  • Weimin Song
  • Wen Guan
  • Wen Yi Song
  • Wen-Chen Chang
  • Wendy Taylor
  • Wenqin Xu
  • Will Buttinger
  • William Balunas
  • William DeRocco
  • William Frederick George
  • William J. Torres Bobadilla
  • William Panduro Vazquez
  • William Sutcliffe
  • William Trischuk
  • Willian Matioli Serenone
  • Witold Kozanecki
  • Wojciech Jakub Flieger
  • Wojciech Krupa
  • Wolfgang Adam
  • Wolfgang Gradl
  • Wolfgang Mader
  • Wolfgang Schaefer
  • Wolfgang Wagner
  • Wolfgang Walkowiak
  • Won Jun
  • Woojin Jang
  • Wouter Van De Pontseele
  • Wrichik Basu
  • Xabier Cid Vidal
  • Xianguo Lu
  • Xiangyang Ju
  • Xianyi Zhang
  • Xiao Wang
  • Xiaobin Ji
  • Xiaodong Shi
  • Xiaohu Sun
  • Xiaohui Liu
  • Xiaolin Wang
  • Xiaotian Liu
  • Xiaoyan Shen
  • Xiaoyue Li
  • Ximo Poveda
  • Xinchou Lou
  • Xingguo Li
  • Xinye Peng
  • Xudong Lyu
  • Xuelong Qin
  • Xueye Hu
  • Yagmur Torun
  • Yajun He
  • Yalcin Guler
  • Yan Qian
  • Yang-Ting Chien
  • Yanting Fan
  • Yaroslav Klopot
  • Yash Arya
  • Yasmine Sara Amhis
  • Yassine El Ghazali
  • Yasuhiro Nakajima
  • Yasuhiro NISHIMURA
  • Yasuhiro Okada
  • Yasuyuki Horii
  • Yasuyuki Okumura
  • Yechan Kang
  • Yen-Hsun Lin
  • Yen-Jie Lee
  • Yeon-jae Jwa
  • Yesenia Hernandez Jimenez
  • Yi Chung
  • Yi Jia
  • Yi-Lin Yang
  • Yifan Jin
  • Yiming Abulaiti
  • Ying-Rui Hou
  • Yiota Foka Foka
  • Yitzhak Frishman
  • Yixiong Zhou
  • Ynyr Harris
  • Yo Kato
  • Yo Sato
  • Yonatan Kahn
  • Yoshiaki Seino
  • Yoshihito Gando
  • Yoshikazu Nagai
  • Yoshitaka Kuno
  • Yoshiyuki Onuki
  • Yosuke Yusa
  • You Zhou
  • Young-Kee Kim
  • Youngwan Son
  • Yu Nakahama Higuchi
  • Yu-Chen Chen
  • Yuda Zeng
  • Yufeng Li
  • Yufeng WANG
  • Yuguang Xie
  • Yuhang Guo
  • Yuhao Wang
  • Yuji Enari
  • Yuji Kato
  • Yuji Yamazaki
  • Yuki Fujii
  • Yukihiro Mimura
  • Yukiyoshi Ohnishi
  • Yuma Uematsu
  • Yung-Ruey Yen
  • Yunjian He
  • Yunpeng Lu
  • Yunxuan Li
  • Yunyang Liu
  • Yuping Guo
  • Yuri Efremenko
  • Yury Kudenko
  • Yusuke Uchiyama
  • Yuta Orikasa
  • Yutaka Ushiroda
  • Yutaro Iiyama
  • Yutaro Sato
  • Yuya Kano
  • Yuya Kobayashi
  • Yuzi Yang
  • Yvonne Chiara Pachmayer
  • Yvonne Leifels
  • Zach Marshall
  • Zachary Michael Schillaci
  • zachary picker
  • Zafer Acar
  • Zahra Ghorbanimoghaddam
  • Zahra Shakarami
  • Zahra Tabrizi
  • Zaida Conesa del Valle
  • Zainab SOUMAIMI
  • Zak Lawrence
  • Zakaria Chadi
  • Zdenek Dolezal
  • Zdenek Hubacek
  • Zeyuan Yu
  • Zhanna Khuranova
  • Zhe Wang
  • Zhen Liu
  • Zhengguo Zhao
  • Zhi Zheng
  • Zhi-zhong Xing
  • Zhicheng Tang
  • Zhili Weng
  • Zhiqing Liu
  • Zhiqing Philippe Zhang
  • ZHIYANG YUAN
  • Zhiyu Xiang
  • Zhoudunming Tu
  • Zhuojun Hu
  • Zhuoran Feng
  • Zijun Xu
  • Zijun Xu
  • Zilin Dai
  • Zirui Wang
  • Ziyuan Li
  • Zoltan Ligeti
  • Zuzana Gruberova
  • Zuzana Kucerova
  • Zuzana Moravcova
  • Zuzana Sinska
  • 梁駿聲 LEUNG
    • Neutrino Physics: Session I - Premiere
      Conveners: Thomas Schwetz, Ryan Patterson (California Institute of Technology)
      • 1
        Global fits to neutrino masses and mixings

        In this talk, I will describe the updated status of global analyses to neutrino oscillation data in the three-flavor framework, with an emphasis on the recent hints in favor of normal mass ordering and maximal CP violation. I will focus on the current knowledge of the oscillation parameters as well as on the improvements that can be expected in the near future.

        Speaker: Dr Mariam Tórtola (IFIC (CSIC/Universitat de València))
      • 2
        Direct comparison of sterile neutrino constraints from cosmological data, electron neutrino disappearance data and muon neutrino to electron neutrino appearance data in a 3+1 model

        We present a quantitative, direct comparison of constraints on sterile neutrinos derived from neutrino oscillation experiments and from Planck data, interpreted assuming standard cosmological evolution. We extend a $1+1$ model, which is used to compare exclusions contours at the 95% CL derived from Planck data to those from $\nu_{e}$-disappearance measurements, to a $3+1$ model. This allows us to compare the Planck constraints with those obtained through $\nu_{\mu}\rightarrow\nu_{e}$ appearance searches, which are sensitive to more than one active-sterile mixing angle. We find that the cosmological data fully exclude the allowed regions published by the LSND, MiniBooNE and Neutrino-4 collaborations, and those from the gallium and rector anomalies, at the 95% CL. Compared to the exclusion regions from the Daya Bay $\nu_{e}$-disappearance search, the Planck data are more strongly excluding above $|\Delta m^{2}_{41}|\approx 0.1\,\mathrm{eV}^{2}$ and $m_\mathrm{eff}^\mathrm{sterile}\approx 0.2\,\mathrm{eV}$, with the Daya Bay exclusion being stronger below these values. Compared to the combined Daya Bay/Bugey/MINOS exclusion region on $\nu_{\mu}\rightarrow\nu_{e}$ appearance, the Planck data is more strongly excluding above $\Delta m^{2}_{41}\approx 5\times 10^{-2}\,\mathrm{eV}^{2}$, with the exclusion strengths of the Planck data and the Daya Bay/Bugey/MINOS combination becoming comparable below this value.

        Speaker: Justin Evans (University of Manchester (UK))
      • 3
        Neutrino oscillations, flavor theories and dark matter

        After a brief review of the status of neutrino oscillation
        experiments I discuss some recent results on flavor extensions of the
        standard model and their possible implications for dark matter.

        Speaker: Jose Valle
      • 4
        Extraction of the optical potential for final state nucleons and $\Delta$ resonances for electron and neutrino scattering on nuclear targets

        Precise modeling of neutrino (and electron) interactions on nuclear targets is essential for neutrino oscillations experiments. The modeling the energy of final state leptons and nucleons in quasielastic scattering on bound nucleons requires knowledge of both the removal energy of the bound nucleon as well as the Coulomb and nuclear optical potentials for the final state nucleon in the field of the spectator (A-1) nucleus. We compare the values of the optical potential for final state protons extracted from electron scattering data on nuclear targets in the quasielastic region to the extracted values of the optical potential for $\Delta$ resonances in the final state. This is the first measurement of the optical potential for the $\Delta$ resonance. We find that the optical potential for a $\Delta$ resonance in the final state is larger than the optical potential for a final state proton.

        Speaker: Arie Bodek (University of Rochester (US))
      • 5
        Constraints on nonstandard interactions and the neutron radius from coherent elastic neutrino-nucleus scattering experiments

        There are expectations for achieving new measurements of the coherent elastic neutrino-nucleus scattering (CENNS) by
        using electron antineutrinos from reactor experiments and through muon (electron) neutrinos from spallation neutrino
        sources (SNS). The first scenario takes into account very low energy neutrinos while the second one includes
        relatively higher energy neutrinos. These measurements would allow improve our knowledge about standard and beyond
        Standard Model physics, for instance as regards the nuclear radius and nonstandard interactions, respectively. In
        this talk we will show constraints on the neutron radius and nonstandard parameters obtained from CENNS processes in
        experiments of both reactor neutrinos and SNS. We will also display that a combination of several experiments could
        give rise to more robust constraints on the parameters mentioned above.

        Speaker: Alexander Parada Valencia (Universidad Santiago de Cali)
      • 6
        Neutrino Portals to Dark Matter

        We explore the possibility that dark matter interactions with Standard Model particles are dominated by interactions with neutrinos. We examine whether it is possible to construct such a scenario in a gauge invariant manner. We first study the coupling of dark matter to the full lepton doublet and confirm that this generally leads to the dark matter phenomenology being dominated by interactions with charged leptons. We then explore two different implementations of the neutrino portal in which neutrinos mix with a Standard Model singlet fermion that interacts directly with dark matter through either a scalar or vector mediator. In the latter cases we find that the neutrino interactions can dominate the dark matter phenomenology. Present neutrino detectors can probe dark matter annihilations into neutrinos and already set the strongest constraints on these realisations. Future experiments such as Hyper-Kamiokande, MEMPHYS, DUNE, or DARWIN could allow to probe dark matter-neutrino cross sections down to the value required to obtain the correct thermal relic abundance.

        Speaker: Salvador Rosauro Alcaraz (Universidad Autónoma de Madrid)
      • 7
        Astrophysical Visible Neutrino Decay

        Neutrino decay modifies neutrino propagation in a unique way; not only is there flavor changing as there is in neutrino oscillations, there is also energy transport from initial to final neutrinos. The most sensitive direct probe of neutrino decay is currently IceCube which can measure the energy and flavor of neutrinos traveling over extragalactic distances. For the first time we calculate the flavor transition probability for the cases of visible and invisible neutrino decay, including the effects of the expansion of the universe, and consider the implications for IceCube. As an example, we demonstrate how neutrino decay addresses a tension in the IceCube data.

        Speaker: Dr Peter Denton (Brookhaven National Laboratory)
      • 5:15 PM
        Coffee break
      • 8
        Neutrino-Nucleus Interaction Physics with the Most Recent MINERvA Low-Energy Beam Data

        MINERvA at FNAL is an experiment dedicated to the study of neutrino-nucleus interaction physics. Its goal is to provide constraints on nuclear effects that are crucial for present and future neutrino oscillation measurements, and to illustrate the interplay between hadronic and nuclear physics at the few-GeV regime. As the analysis of the Low-Energy data---the beam flux peaks at about 3 GeV with most of the rate between 1-6 GeV---is coming to a conclusion, nuclear effects are shown to be a complex phenomenon which challenges many of the popular theoretical descriptions. In this talk, a summary of the most recent MINERvA Low-Energy Beam results will be presented, alongside with discussions on their implication for future neutrino oscillation measurements.

        Speaker: Dr Xianguo Lu (University of Oxford)
      • 9
        Review of MINERvA's Medium Energy Neutrino Physics Program

        The MINERvA experiment completed its physics run using the 6-GeV,on-axis NuMI ME beam at Fermilab. The experiment received a total of 12E20 protons on target in both neutrino and antineutrino mode running. This allows MINERvA a new level of statistical precision in neutrino interaction measurements with the ability to measure multi-dimensional differential cross sections. In order to make the most of this jump in statistics, a new level of precision in flux prediction has also been required. This talk will cover MINERvA’s Medium Energy (ME) physics program, including the new kinematic regimes that are now accessible, and will also discuss the exceptional precision reached in flux determination.

        Speaker: Heidi Marie Schellman (Oregon State University (US))
      • 10
        Recent Cross-section Measurements from MicroBooNE

        MicroBooNE is a liquid argon time projection chamber in the Booster Neutrino Beam at Fermilab. The large event rate and 3 mm wire spacing of the detector provide high-statistics, precise-resolution imaging of neutrino interactions leading to low-threshold, high-efficiency event reconstruction with full angular coverage. As such, MicroBooNE is an ideal place to probe neutrino-argon interactions in the hundreds-of-MeV to few-GeV energy range, and to study the impact of nuclear effects through detailed measurements of hadronic final states. This will be the subject of this talk.

        Speaker: Raquel Castillo Fernandez (FNAL)
      • 11
        Neutral Current Pi0 Rate Measurement with the MicroBooNE Detector

        The talk presents the first measurement of Neutral Current (NC) $\pi^0$ production on argon in a sub-GeV neutrino beam with the MicroBooNE liquid argon time projection chamber (LArTPC) detector. The analysis qualifies data to Monte Carlo agreement in several reconstructed kinematic variables, and investigates contributions from coherent and non-coherent NC $\pi^0$ production processes independently. Those are the dominant contributing backgrounds to MicroBooNE’s search for low-energy excess single-photon events, for two separate exclusive final state samples. A data-driven determination of the NC $\pi^0$ rate and coherent fraction is critical for constraining backgrounds to MicroBooNE’s single-photon search.

        Speaker: Mark Ross-Lonergan (Columbia University)
      • 12
        Charged-Current Electron Neutrino measurement with the MicroBooNE detector

        MicroBooNE is the first phase of Fermilab's Short Baseline Neutrino (SBN) Liquid Argon Time Projection Chamber (LArTPC) programme.
        This talk outlays the first characterisation of electron neutrinos in a muon neutrino beam with the LArTPC detector technology. The Booster Neutrino Beam has an energy peaking around 1 GeV and an electron content of approximately 0.5%. The analysis investigates electrons produced in charged-current electron neutrino interactions. The kinematics of the electrons are measured along with comparisons to simulation. Most of the systematic uncertainties are constrained using a data-driven sample of charged-current muon neutrino events. The measurement of electron neutrinos originating from the Booster Neutrino Beam is a crucial component to understand the nature of the observed excess of low energy electromagnetic-like events at MiniBooNE.

        Speaker: Dr Wouter Van De Pontseele (Harvard University)
      • 13
        Recent Cross-section Results from the T2K Experiment

        One of the largest systematic uncertainties affecting neutrino oscillation measurement comes from present limited knowledge of (anti-)neutrino-nucleus interactions. Neutrino scattering understanding is crucial for the interpretation of neutrino oscillation since it affects background estimation and neutrino energy reconstruction. Thus, precise (anti-)neutrino-nucleus cross section measurements are vital for the present and future long-baseline neutrino oscillation experiments. The T2K long-baseline neutrino oscillation experiment, in addition to its contributions to neutrino oscillation measurement, has a wide program of neutrino interaction cross-section measurements using its near detector complex. With multiple targets (carbon, water, argon, iron), and with on- and off-axis detectors which sample different neutrino spectra from the same beamline, T2K is able to investigate atomic number and energy dependent behavior in a single experiment. In this talk an overview of the T2K neutrino cross sections, focusing on the latest results is presented.

        Speaker: Dr Ka Ming Tsui (University of Liverpool)
      • 14
        Neutrino Oscillations Results from the T2K Experiment

        The T2K experiment probes the masses and mixing of neutrinos through measurements of neutrino oscillations. A beam of muon neutrinos or muon antineutrinos is generated at the J-PARC proton accelerator on the east coast of Japan, and the beam’s composition is measured 295 km away in the Super-Kamiokande detector. The transition of muon neutrinos and antineutrinos to other flavors and the appearance of electron neutrinos and antineutrinos are governed by neutrino mixing and mass parameters, including the phase $\delta_{cp}$, which determines the amount of CP violation in neutrino mixing. Previous measurements from T2K have shown a strong constraint on $\delta_{cp}$ with the exclusion of a significant fraction of $\delta_{cp}$ values at 3$\sigma$ confidence. Here, we present the latest results from T2K with data collected through 2020 and the prospects for more sensitive measurements by T2K in the future.

        Speaker: Laura-Iuliana Munteanu (Université Paris-Saclay (FR))
      • 15
        The T2K ND280 Upgrade

        In view of the J-PARC program of upgrades of the beam intensity, the T2K collaboration is preparing towards an increase of the exposure aimed at establishing leptonic CP violation at 3 $\sigma$ level for a significant fraction of the possible $\delta_{CP}$ values. To reach this goal, an upgrade of the T2K near detector ND280 will be installed at J-PARC in 2021, with the aim of reducing the overall statistical and systematic uncertainties at the appropriate level of better than 4\%.
        We have developed an innovative concept for this neutrino detection system, comprising the totally active Super-Fine-Grained-Detector (SuperFGD), two High Angle TPC (HA-TPC) and six TOF planes.
        The SuperFGD, a highly segmented scintillator detector, acting as a fully active target for the neutrino interactions, is a novel device with dimensions of ~2x1.8x0.6 m3 and a total mass of about 2 tons. It consists of about 2 millions of small scintillator cubes each of 1 cm3. Each cube is covered by a chemical reflector. The signal readout from each cube is provided by wavelength shifting fibers inserted connected to micro-pixel avalanche photodiodes MPPCs. The total number of channels will be ~60,000. We have demonstrated that this detector, providing three 2D projections, has excellent PID, timing and tracking performance, including a $4 \pi$ angular acceptance, especially important for short proton and pion tracks.
        The HA-TPC will be used for 3D track reconstruction, momentum measurement and particle identification. These TPC, with overall dimensions of 2x2x0.8 m3, will be equipped with 32 resistive Micromegas. The thin field cage (3 cm thickness, 4% rad. length) will be realized with laminated panels of Aramid and honeycomb covered with a kapton foil with copper strips. The 34x42 cm2 resistive bulk Micromegas will use a 500 kOhm/square DLC foil to spread the charge over the pad plane, each pad being appr. 1 cm2. The front-end cards, based on the AFTER chip, will be mounted on the back of the Micromegas and parallel to its plane.
        The time-of-flight (TOF) detector will allow to reject events generated in the passive areas of the detector and improve particle identification. The TOF will consist of 6 planes with about 5 m2 surface area surrounding the SuperFGD and the TPCs. Each plane will be assembled with 2.2 m long cast plastic scintillator bars with light collected by arrays of large-area MPPCs from two ends. The time resolution at the bar centre is 150 ps.
        In this talk we will report on the design of these detectors, their performance, the results of the test beam and the plan for the construction.

        Speaker: Davide Sgalaberna (ETH Zurich (CH))
      • 16
        Latest Oscillation Results Combining Neutrino and Antineutrino Data from the NOvA Experiment

        The NOvA experiment is a long-baseline neutrino oscillation experiment that uses the NuMI beam from Fermilab to detect both electron and muon flavored neutrinos in a Near Detector, located at Fermilab, and a Far Detector, located at Ash River, Minnesota. NOvA's primary physics goals include precision measurements of neutrino oscillation parameters, such as $\theta_{23}$ and the atmospheric mass-squared splitting, along with probes of the mass hierarchy and the CP violating phase. This talk will present the latest NOvA results using a combined neutrino and anti-neutrino dataset based on a beam exposure of approximately $13 \times 10^{20}$ protons-on-target in each dataset.

        Speaker: Michael Baird (University of Virginia)
      • 17
        The NOvA Test Beam Program

        NOvA is a long-baseline oscillation neutrino experiment designed to study and measure a wide range of important topics for neutrino physics such as the neutrino mixing parameters, the neutrino mass hierarchy, and CP violation in the lepton sector. The NOvA Test Beam experiment uses a scaled-down detector of 30 tons to analyze tagged beamline particles. A new tertiary beamline deployed at Fermilab can select and identify electrons, muons, pions,kaons and protons with energies from 0.3 to 2 GeV. Using these data, the Test Beam program will provide NOvA with a better understanding of the largest systematic uncertainties impacting NOvA’s analyses, which include the detector response, calibration, and hadronic and electromagnetic energy resolution. In this talk, I will present the status
        and future plans for the NOvA Test beam program, along with preliminary results.

        Speaker: Michael Wallbank
      • 18
        The COHERENT Experiment at the Spallation Neutron Source

        The pioneering experiments by the COHERENT collaboration at the Spallation Neutron Source (SNS) at the Oak Ridge National Laboratory yielded the first observations of coherent elastic neutrino nuclear scattering (CEvNS). The first observation on argon was recently presented and demonstrates the potential of this new neutrino laboratory to exploit CEvNS as a new probe of physics topics including electromagnetic properties, searches for physics beyond the standard model, and nuclear form factors. COHERENT is deploying two new instruments to measure CEvNS on sodium and germanium nuclei and is pursuing multiple ton-scale detectors to improve precision and accuracy. The SNS is also ideally suited for a broader set of high-precision neutrino physics measurements and dark matter searches because of the accelerator's intensity, pulsed-structure, and proton beam energy. The experimental features of this new capability as well as the recent results of our operating detectors will be presented.

        Speaker: Alexey Konovalov
      • 19
        Sterile neutrino searches with the ICARUS detector

        The ICARUS collaboration employed the 760-ton T600 detector in a successful three-year physics run at the underground LNGS laboratories studying neutrino oscillations with the CNGS neutrino beam from CERN, and searching for atmospheric neutrino interactions. ICARUS performed a sensitive search for LSND-like anomalous $\nu_e$ appearance in the CNGS beam, which contributed to the constraints on the allowed parameters to a narrow region around 1 eV$^2$, where all the experimental results can be coherently accommodated at 90% C.L. After a significant overhauling at CERN, the T600 detector has now been placed in its experimental hall at Fermilab where installation activities are in progress. It will be soon exposed to the Booster Neutrino Beam to search for a sterile neutrino within the Short Baseline Neutrino (SBN) program, devoted to definitively clarify the open questions of the presently observed neutrino anomalies. The proposed contribution will address ICARUS achievements, its status and plans for the new run at Fermilab and the ongoing developments of the analysis tools needed to fulfill its physics program.

        Speaker: Christian Farnese (Universita e INFN, Padova (IT))
      • 20
        Search for a Low-energy Excess with MicroBooNE

        MicroBooNE is a neutrino experiment based at Fermilab that utilizes a liquid argon time projection chamber (LArTPC) located on-axis in the Booster Neutrino Beam (BNB) at Fermilab. One of the experiment’s main goals is to search for excess low-energy electromagnetic-like events as seen by the MiniBooNE experiment, located just downstream of MicroBooNE in the BNB. This talk will present MicroBooNE's low-energy excess search, including targeted searches for both single-photon-like and single-electron-like events.

        Speaker: David Caratelli (Fermi National Accelerator Laboratory)
      • 21
        Search for heavy neutral lepton production at the NA62 experiment

        Searches for heavy neutral lepton production in K+ --> e+N and K+ --> mu+N decays using the data set collected by the NA62 experiment at CERN in 2016-18 are presented. Upper limits on the elements of the extended neutrino mixing matrix $|U_{e4}|^2$ and $|U_{\mu4}|^2$ are established at the levels of $10^{-9}$ and $10^{-8}$, respectively, improving on the earlier searches for heavy neutral lepton production and decays in the kinematically accessible mass range.

        Speaker: Evgueni Goudzovski
    • Beyond the Standard Model: Session I - Premiere
      Conveners: Alexandre Sousa (University of Cincinnati), Mia Tosi (Università degli Studi di Padova & INFN)
      • 22
        R-parity violating SUSY searches in ATLAS

        R-parity violating (RPV) SUSY models evade the stringent limits from missing-energy-based searches, and remain excellent candidates for low-scale SUSY. ATLAS has completed several dedicated searches for RPV signatures in Run 2, the most recent of which will be shown in this talk.

        Speaker: Johannes Josef Junggeburth (Max-Planck-Institut fur Physik (DE))
      • 23
        New bounds on sneutrino masses through collider searches

        Though collider searches are constraining supersymmetric parameter space, generic model independent bounds on sneutrinos remain very low. We calculate new model independent lower bounds on general supersymmetric scenarios with sneutrino LSP and NLSPs. By recasting ATLAS LHC exotic searches in mono boson channels, we place an upper bound on the cross section on $pp \rightarrow \tilde{\nu} \tilde{\nu} + V $ processes in mono-photon, mono-$Z$ and mono-Higgs channels. We also evaluate the LHC discovery potential of sneutrinos in the HL-LHC 3 inverse attobarn run.

        Speaker: Humberto Gilmer (Ohio State University)
      • 24
        Higgs properties: constraints and sensitivity on Supersymmetry?

        We present some highlights on the complementarity of the Higgs and SUSY searches at the LHC, using the 8 and 13 TeV results. In particular, we discuss the constraints that can be obtained on the MSSM parameters by the determination of the Higgs boson mass and couplings. In addition, we investigate the interplay with heavy Higgs searches, and evaluate how higher LHC luminosities and a future linear collider can help probing the pMSSM Higgs sector and reconstructing the underlying parameters.

        Speaker: Nazila Mahmoudi (Universite Claude Bernard Lyon I (FR))
      • 25
        Sbottoms as probes to MSSM with nonholomorphic soft interactions

        Presence of non-holomorphic soft SUSY breaking terms is known to be a possibility in the popular setup of the Minimal Supersymmetric Standard Model (MSSM). It has been shown that such a scenario known as Non-Holomorphic Supersymmetric Standard Model (NHSSM) could remain ‘natural’ (i.e., not fine-tuned) even in the presence of a rather heavy higgsino-like LSP. In a first study of such a scenario at colliders (LHC), we explore a possible way that focuses on the sbottom phenomenology. This exploits the usual tanβ-dependence (enhancement) of the bottom Yukawa coupling but reinforced/altered in the presence of non-vanishing nonholomorphic soft trilinear parameter A'_b. For a given set of masses of the sbottom(s) and the light electroweakinos (LSP, lighter chargino etc.) which are known from experiments, the NHSSM could manifest itself via event rate in the 2b + MET final state, which could be characteristically different from its MSSM expectation. Impact on the phenomenology of the stops at the LHC is also touched upon.

        Speaker: Ms Samadrita Mukherjee (Indian Association for the Cultivation of Science)
      • 26
        Beyond the Standard Model Physics Prospects at Deep Underground Neutrino Experiment

        The Deep Underground Neutrino Experiment (DUNE) is an international project for neutrino physics and proton-decay searches, currently in the design and planning stages. Once built, DUNE will consist of two detectors exposed to the world’s most intense neutrino beam. The near detector will record neutrino interactions near the beginning of the beamline, at Fermilab. The other, much larger, detector, comprising four 10-kton liquid argon time projection chambers (TPCs), will be installed at a depth of 1.5 km at the Sanford Underground Research Facility in South Dakota, about 1300 km away from the neutrino source.
        The unique combination of the high-intensity neutrino beam with DUNE's high-resolution near detector system and massive LArTPC far detector enables a variety of probes of BSM physics, either novel or with unprecedented sensitivity, from the potential discovery of new particles (sterile neutrinos or dark matter), to precision tests of beyond the three-flavor mixing paradigm, Non-standard Neutrino Interactions, Heavy Neutral Leptons, or the detailed study of rare processes (e.g. neutrino trident production). The talk will review these physics topics and discuss the prospects for their discovery at the DUNE experiment.

        Speaker: Doojin Kim (University of Florida)
      • 27
        Search for Proton Decay via $p\to e^+\pi^0$ and $p\to \mu^+\pi^0$ in 450 kiloton$\cdot$years Exposure of the Super-Kamiokande Detector

        Super-Kamiokande is a 50 kton water Cherenkov detector in Japan. One of the main physics goals is to test Grand Unified Theory by searching for proton decay. The $p\to e^+\pi^0$ and $p\to \mu^+\pi^0$ decay modes are the most prospective because they are predicted in many theories, and because of their unique event topologies, signal and atmospheric neutrino background events that can be clearly discriminated experimentally. Super-Kamiokande has been operating from April 1996 and accumulated a large amount of data with a great potential for discovery. In order to further improve the search sensitivity, we have enlarged the fiducial mass of the Super-Kamiokande detector by 20% and added 25% more exposure by livetime update since the last published results in 2017, resulting in 1.5 times larger statistics. In this talk, the latest proton decay search results, especially via $p\to e^+\pi^0$ and $p\to \mu^+\pi^0$ modes with the larger fiducial mass will be presented.

        Speaker: Akira Takenaka (University of Tokyo)
      • 28
        Search for heavy neutral leptons decaying into muon-pion pairs in the MicroBooNE detector

        We will present upper limits on the production of heavy neutral leptons (HNLs) decaying to muon-pion pairs using data collected with the MicroBooNE liquid-argon time projection chamber (TPC) operating at Fermilab. This search is the first of its kind performed in a liquid-argon TPC and the first beyond the Standard Model result obtained with the MicroBooNE detector. We use data collected in 2017 and 2018 corresponding to an exposure of 2 x 1020 protons on target from the Fermilab Booster Neutrino Beam, which produces mainly muon neutrinos with an average energy of about 800 MeV. HNLs with higher mass are expected to have a longer time-of-flight to the liquid-argon TPC than Standard Model neutrinos. The data are therefore recorded with a dedicated trigger configured to detect HNL decays that occur after the neutrino spill reaches the detector. We set upper limits at the 90\% confidence level on the element U_mu2 of the extended PMNS mixing matrix in the range for Dirac HNLs and Majorana HNLs, assuming HNL masses between 260 and 385 MeV.

        Speaker: Owen Robert Young Goodwin (University of Manchester (GB))
      • 29
        Explaining the SM flavor structure with grand unified theories

        We do not know why there are three fermion families in the Standard Model (SM), nor can we explain the observed pattern of fermion masses and mixing angles. Standard grand unified theories based on the SU(5) and SO(10) groups fail to shed light on this issue, since they also contain three copies of fermion representations of an enlarged gauge group.

        However, it does not need to be so. In this talk, I will discuss the possibility that the Standard Model families are distributed over distinct representations of a grand unified model, in which case the gauge symmetry itself might discriminate the various families and explain (at least partially) the flavor puzzle.

        Speaker: Renato Fonseca (IPNP, Charles University, Prague)
      • 30
        A new program of searches for baryon number violation via neutron conversions at ORNL and the ESS

        Searches for free neutrons converting to anti-neutrons (|ΔB|=2) and/or sterile neutrons (|ΔB|=1) play a distinctive and complementary role in the worldwide program of baryon number violation searches. These searches provide an important test of a global symmetry that must be violated to create a baryon asymmetry in the universe, and offer a unique portal to a dark sector through these feeble interactions. An international collaboration has developed a staged program of searches for neutron conversions at Oak Ridge National Laboratory and the European Spallation Source, which will allow both precision searches and research and development for subsequent stages, culminating in an ultimate improvement in sensitivity of around three orders of magnitude compared with earlier work. We will outline this program and present results of the first-stage search for neutron conversions to sterile neutrons in large magnetic fields, suggested to explain the long-standing neutron lifetime anomaly.

        Speaker: Leah Broussard (Oak Ridge National Laboratory)
      • 5:45 PM
        Coffee Break
      • 31
        Searching for new resonances in partially-hadronic states in ATLAS

        Many extensions to the Standard Model predicts new particles decaying into two bosons (VV, VH, Vgamma) making these important signatures in the search for new physics. Searches for such diboson resonances have been performed in final states with different numbers of leptons, photons and jets where new jet substructure techniques to disentangle the hadronic decay products in highly boosted configuration are being used. This talk summarizes ATLAS searches for diboson resonances with LHC Run 2 data in semileptonic final states.

        Speaker: Stefan Raimund Maschek
      • 32
        Search for new phenomena in leptonic final states at CMS

        Many new physics models, e.g., compositeness, extra dimensions, extended Higgs sectors, supersymmetric theories, and dark sector extensions, are expected to manifest themselves in the final states with leptons and photons. This talk presents searches in CMS for new phenomena in the final states that include leptons and photons, focusing on the recent results obtained using the full Run-II data-set collected at the LHC.

        Speaker: Saranya Samik Ghosh (RWTH, III. Physik. Inst. A)
      • 33
        Search for new physics with unconventional signatures at CMS

        Many extensions to the standard model predict new particles and phenomena that may produce unique and unconventional signatures at the LHC. This talk presents results from searches that look for such unconventional signatures using novel reconstruction techniques in CMS with the full Run-II data-set collected at the LHC

        Speaker: Brian Francis (The Ohio State Univ.)
      • 34
        Search for new physics using final states with photons at CMS

        Several theories of physics beyond the standard model predict new phenomena and interactions involving photons. This talk covers searches for new physics performed using data collected with the CMS detector at the LHC, which target final states consisting of photons.

        Speaker: Justin Andrew Williams (The Univ. of Kansas)
      • 35
        Searches for new heavy resonances in hadronic final states with the ATLAS detector

        Many theories beyond the Standard Model predict new phenomena which decay to jets. These are of particular interest at the LHC since new phenomena produced in parton collisions are likely to produce final states with (at least) two partons. This talk presents the latest 13 TeV ATLAS results, covering exclusive searches for dijet resonances along with searches for dijet events produced in association with additional particles such as an additional isolated lepton, which overcomes the trigger limitations to extend to lower dijet masses.

        Speaker: Jeremy Robert Love (Argonne National Laboratory (US))
      • 36
        Searches for vector-like quarks at CMS

        We present results of searches for massive vector-like top and bottom quark partners using proton-proton collision data collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV. Single and pair production of vector-like quarks are studied, with decays into a variety of final states, containing top and bottom quarks, electroweak gauge and Higgs bosons. We search using several categories of reconstructed objects, from multi-leptonic to fully hadronic final states. We set exclusion limits on both the vector-like quark mass and cross sections, for combinations of the vector-like quark branching ratios.

        Speaker: Julie Hogan (Brown Univ.)
      • 37
        Fully Hadronic Diboson searches in ATLAS

        Many extensions to the Standard Model predicts new particles decaying into two bosons (W, Z, photon, or Higgs bosons) making these important signatures in the search for new physics. Searches for such diboson resonances have been performed in different final states and new jet substructure techniques to disentangle the hadronic decay products in highly boosted configuration are being used. Novel analysis techinques, unsupervised learning, are also used to extract new feature from the data. This talk summarizes recent ATLAS diboson searches with LHC Run 2 data in fully hadronic final state.

        Speaker: Steven Schramm (Universite de Geneve (CH))
      • 38
        Search for new new phenomena using jets at CMS

        Many new physics models, e.g., compositeness, extra dimensions, extended Higgs sectors, supersymmetric theories, and dark sector extensions, are expected to manifest themselves in the final states with hadronic jets. This talk presents searches in CMS for new phenomena in the final states that include jets, focusing on the recent results obtained using the full Run-II data-set collected at the LHC.

        Speaker: Dimitrios Karasavvas (Univ. of Athens)
      • 39
        Search for millicharged particles at the LHC with the milliQan prototype

        In this talk, I will present the results of a recent search for fractionally charged particles using a data sample of proton-proton collisions provided by the CERN Large Hadron Collider in 2018. This search was carried out with a prototype scintillator-based detector, which allows the first sensitivity to particles with charges ≤0.1e at a hadron collider. The existence of new particles with masses between 20 and 4700 MeV is excluded at 95% confidence level for charges between 0.006e and 0.3e, depending on their mass. New sensitivity is achieved for masses larger than 700 MeV. I will discuss the concept of the experiment, the results of the search, and the plan for the full milliQan detector given the successful operation of the prototype.

        Speaker: Matthew Daniel Citron (Univ. of California Santa Barbara (US))
      • 40
        Search for non-Newtonian gravity with optically-levitated microspheres

        The universal law of gravitation has undergone stringent tests for many decades over a significant range of length scales, from atomic to planetary. Of particular interest is the short distance regime, where modifications to Newtonian gravity may arise from axion-like particles or extra dimensions. We have constructed an ultra-sensitive force sensor based on optically-levitated microspheres with a force sensitivity of $10^{-17}$ N/$\sqrt{\rm Hz}$ for the purpose of investigating non-Newtonian forces in the 1-100 $\mu$m range. Microspheres interact with a variable-density attractor mass made by alternating silicon and gold segments with periodicity of 50 $\mu$m. The attractor can be located as close as 10 $\mu$m from a microsphere. I describe the characterization of this system, its sensitivity, and some preliminary results. Further technological developments to reduce background are expected to provide orders of magnitude improvement in the sensitivity, probing beyond current constraints on non-Newtonian interactions.

        Speaker: Dr Nadav Priel (Stanford University)
    • Top Quark and Electroweak Physics: Session I - Premiere
      Conveners: Aram Apyan (Fermi National Accelerator Lab. (US)), Maria Aldaya Martin (DESY), Jiri Kvita (Palacky University (CZ)), Tomas Jezo (University of Zurich)
      • 41
        Recent measurements of electroweak boson properties at D0

        We present a measurement of the shape of the transverse momentum distribution for W boson in the $W \to e\nu$ decay channel using 4.3 fb$^{-1}$ of $ p\bar p$ data at $\sqrt s=$1.96 TeV. The results are compared to QCD predictions both at reconstructed and particle level. We also present a measurement of the shape of the Z boson rapidity using $Z/\gamma^{*} \to\mu^+\mu^- $ events produced in 8.6 fb$^{-1}$ of $ p\bar p$ data. This measurement is compared to NNLO QCD predictions using different sets of parton density functions.

        Speaker: Chen Wang (University of Science and Technology of China (CN))
      • 42
        W boson measurements with the CMS experiment

        Latest results on W boson measurements are presented using collision data collected by CMS. Multi-differential production cross sections, charge asymmetry, polarization measurements will be discussed, and new other results.

        Speaker: Riccardo Salvatico (Univ. di Torino e Sez. dell'INFN)
      • 43
        Electroweak and Top Physics in the Forward Region

        The LHCb detector at the LHC offers unique coverage of forward rapidities, allowing the experiment to play an important role in measurements of Standard Model processes at the LHC. Measurements of W, Z, top and jet production at LHCb will be presented, and future prospects will be discussed.

        Speaker: Lorenzo Sestini (Universita e INFN, Padova (IT))
      • 4:45 PM
        General discussion
      • 4:55 PM
        Coffee Break
      • 44
        Recent ttbar and single top inclusive cross sections results in CMS

        Latest results on inclusive top quark pair and single top quark production cross sections are presented using collision data collected by CMS. The single top quark analyses investigate separately the production of top quarks via t-channel exchange, via associated production with a W boson (tW), and via the s-channel.

        Speaker: Denise Muller (KIT - Karlsruhe Institute of Technology (DE))
      • 45
        Measurements of differential cross-sections of top-quark-antiquark pair-production with the ATLAS detector

        Comprehensive measurements of differential cross-sections of top-quark-antiquark pair-production are presented. The measurements are performed in the electron-muon, the lepton+jets and the all-hadronic channels. The latter two allow for reconstruction of the top-quark and top-quark-pair kinematic distributions. In the electron-muon channel, kinematic properties of the two leptons are measured differentially. High sensitivity of some distributions to PDFs is demonstrated. The lepton+jets and all-hadronic channels are complementary in terms of range and resolution for several top-quark variables. All three measurements use data recorded in the years 2015 and 2016 during Run 2 of the LHC. The measurements are compared quantitatively with predictions from several setups of next-to-leading order matrix-element generators combined with parton-shower generators and from fixd order calculations at NNLO in QCD. In addition, the total cross-section is measured in the electron-muon channel. A precision of 2.4 % is reached, well below the uncertainty of predictions at next-to-next-to-leading order in QCD. The total cross-section is compared to predictions by different sets of parton distribution functions and is used to determine the top-quark mass. A total cross-section measurement based on the full Run 2 dataset in the lepton+jets channel is also presented.

        Speaker: Teng Jian Khoo (University of Innsbruck (AT))
      • 46
        Top quark pair and single top differential cross sections in CMS

        Differential measurements of top quark pair and single top quark production cross sections are presented using data collected by CMS. The cross sections are measured as a function of various kinematic observables of the top quarks and the jets and leptons of the event final state. The results are confronted with precise theory calculations.

        Speaker: Georgios Bakas (National Technical University of Athens)
      • 6:35 PM
        General discussion
      • 6:45 PM
        Coffee Break
      • 47
        KKMC-hh for Precision EW Phenomenology at the LHC

        We describe the program KKMC-hh, which calculates Z boson processes in hadronic collisions using coherent exclusive exponentiation (CEEX) with exact second-order photonic corrections at next-to-leading log and first-order weak vertex corrections, including initial and final state photonic radiation and initial-final interference. We describe current applications to precision forward-backward asymmetry calculations for the measurement of the Weinberg angle at the LHC and upgrades in progress for use with an NLO QCD shower.

        Speaker: Scott Alan Yost (The Citadel - The Military College of South Carolina (US))
      • 48
        Electroweak and QCD aspects in V+jets in CMS

        The study of the associated production of vector bosons and jets constitutes an excellent testbench to check numerous QCD predictions. Total and differential cross sections of vector bosons produced in association with jets have been studied in pp collisions at 7, 8 and 13 TeV center-of-mass energies. Differential distributions as function of a broad range of kinematical observables are measured and compared with theoretical predictions. Final states with a vector boson and jets can be also used to study electroweak initiated processes, such as the vector boson fusion production of a Z or W boson that are accompanied by a pair of energetic jets with large invariant mass.

        Speaker: Sarah Malik (Imperial College, Univ. of London)
      • 49
        Improving Electroweak Precision Observables Including m_W, Γ_W, A_LR and TGCs with the ILD Detector

        We discuss the improvements that the ILC can make in precision electroweak observables based on studies with the ILD detector concept. These include observables from WW production and radiative return to the Z at a centre of mass energy of 250 GeV, and from a dedicated stage of running at the Z pole. These improvements take advantage of the ILC capabilities for polarized electron and positron beams, and an accelerator design that accommodates data-taking at a wide range of beam energies. We also present new results on precision measurements of fermion pair production. The studies include experimental considerations evaluated in the context of the ILD detector concept and discussion of experimental strategies targeted at controlling relevant systematic uncertainties.

        Speaker: Graham Wilson (The University of Kansas (US))
      • 8:20 PM
        General discussion
      • 8:30 PM
        Discussion session: Top quark production
    • Quark and Lepton Flavour Physics: Session I - Premiere
      Conveners: Ruth Van de Water (Fermilab), Karim Massri (CERN), Carla Gobel Burlamaqui De Mello (Pontificia Universidade Catolica (BR))
      • 50
        Purely Leptonic Rare decays at LHCb

        During Run 1 and 2 of the LHC, the LHCb experiment has collected large samples of beauty-hadron decays corresponding to an integrated luminosity of 9/fb at pp centre-of-mass energy of 7, 8 and 13 TeV. Very rare decays are discussed, with an emphasis on Flavour-Changing Neutral-Current processes of the type $B^0_{(s)} \to l^+ l^-$. Anomalies in the branching fractions of these decays are also discussed and connected with tests of Lepton-Flavour-Universality.

        Speaker: Lauren Emma Yeomans (University of Liverpool (GB))
      • 51
        Search for New Physics with rare decays at CMS

        Recent CMS results are reported either for the observation of the B0s to mu+mu- decay and for the search of the B0 to mu+mu- decay by adding the 2016 13TeV data to the Run-I data and for the search of the tau to 3 muons decay, with 2016 13 TeV data, by considering tau leptons coming both from Ds and W decays.

        Speaker: Ozlem Ozcelik Ozludil (Bogaziçi Univ., Dept of Physics)
      • 52
        ATLAS results on Heavy Flavour production and decay (including rare processes)

        The heavy flavour production and decays are studied with the ATLAS detector, mainly through final states containing muons. This talk will summarise recent results from ATLAS, including measurements on Bc mesons decaying in different final states and of Ds cross-sections. The latest results on the studies of rare processes are also presented. Particular attention will be given to Flavour Changing Neutral Current processes, such as the decay of Bs and B0 into two muons.

        Speaker: Sally Seidel (University of New Mexico / ATLAS)
      • 53
        Study of $B$ and $B_{s}$ Decays at Belle

        We present the study of $B_{s}$ decays using 121.4 fb$^{-1}$ of data collected at $\Upsilon(5S)$ resonance with the Belle detector at the KEKB asymmetric-energy electron-positron collider. We search for $B_{s}\to \eta^{\prime} \eta$ and $B_{s}\to \eta^{\prime} K^{0}_{S}$, which are suppressed in the standard model (SM) and can receive contribution of physics beyond the SM. We also report the first model-independent measurement of B($B_{s}\to D_{s} X$) using $B_{s}$ semileptonic tagging; this is necessary for measuring absolute rates and branching fractions of other $B_{s}$ decays. In addition, we present precise measurements of the branching fraction and CP asymmetry in $B\to \phi \phi K$ decays using Belle data that corresponds to 772 million $B\overline{B}$ pairs. These decays are mediated by the $b\to s$ FCNC transition, where one can observe large CP violation due to interference of potential new-physics amplitudes appearing in the loop with the $b\to c$ tree-level transition of $B\to \eta_{c} K$, $\eta_{c}\to \phi \phi$.

        Speaker: Nisar Nellikunnummel (BNL)
      • 54
        Rare B-decay anomalies

        Rare $B$-decays are among the most promising indirect probes for the search for New Physics. In recent years there have been several significant hints for physics beyond the SM in semileptonic $b\to s \ell \ell$ transitions. Interestingly, the analysis of these so-called B anomalies indicate a consistent pattern of lepton flavour non-universality.
        We present updated global fits of Wilson coefficients both when only one or two Wilson coefficients are involved as well as in a 20-dimensional fit. Using the new data of the LHCb angular analysis of the $B\to K^* \mu^+ \mu−$ decay we make statistical comparisons to determine whether the most favoured explanation of the anomalies is New Physics or underestimated hadronic effects.

        Speaker: Siavash Neshatpour
      • 55
        Rare charm decays at LHCb

        LHCb is playing a crucial role in the study of rare and forbidden decays of charm hadrons, which might reveal effects beyond the Standard Model. We present the latest searches for, and measurements using, rare charm decay processes with two leptons in the final state.

        Speaker: Chris Burr (CERN)
      • 56
        Radiative and Rare Charm Decays at BESIII

        In this talk, we present the latest result on radiative and rare/forbidden decays for D mesons at the BESIII experiment based on 2.92 fb-1 and 3.19 fb-1 data taken at the center-of-mass energy 3.773 4.178 GeV with the BESIII detector, respectively. Based the data at 4.178 GeV, a search for the rare radiative leptonic decay Ds->gamma e+ nu is performed for the first time with negative result and an upper limit (UL) of the branching fraction(BF) is set to be less than 1.310E-4 at 90\% confidence level (CL). With this data sample, we also search for the rare decay Ds-> p bar e+ nu. No significant signal is observed, and an UL B(Ds -> p pbar e+ nu)<2.010E-4 is determined at the 90\% CL. Using the dataset at 3.773 GeV, we search for rare decays of D-> h(h’)e+e- with double tag method, where h(‘) are hadrons. No significant excess over the expected backgrounds is observed, the ULs on the signal BFs at the 90\% CL are determined. For the D+ decays, the searches are performed for the first time, while for D0 decays, the ULs are improved in general by a factor of 10, compared to previous measurements. All the ULs on the BF, at the level of $10E-5~10E-6, are above the SM predictions, which include both LD and SD contributions. Also, we search for the Majorana neutrino in the lepton number violating (LNV) decays $D\to K pi e+e-. No significant signal is observed, and the ULs on the BF at the 90\% CL are set to be less than few $10E-6. The Majorana neutrino is searched for with different mass assumptions ranging from 0.25 to 1.0 GeV/ in the decays D0 -> K- e+ nu_N(pi- e+) and D+->KS e+ nu_N(pi-e+), and the UL on the BF at the 90\% CL are extracted to be at the level of $10E-7~10E-6. The constraints on the mixing matrix element |V_{eN}|^2 are also evaluated.

        Speaker: Dr Bo Zheng (University of South China)
      • 57
        Rare and forbidden decays of D0 meson

        We report the observation of the rare charm decay $D^0\to K^-\pi^+e^+e^-$, a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type $D^0\to h^- h^{'-} \ell^+ \ell^{'+}$, and $D^0\to h^- h^{'+} \ell^+ \ell^{'-}$, and a search for seven lepton-number-violating decays of the type $D^{0}\rightarrow X^{0} e^{\pm} \mu^{\mp}$, where $h$ and $h^{\prime}$ represent a $K$ or $\pi$ meson, $\ell$ and $\ell^{\prime}$ an electron or muon, and $X^{0}$ a $\pi^0$, $K^0_S$, $K^{*0}$, $\rho^{0}$, $\phi$, $\omega$, or $\eta$ meson. The results are based on $468$ fb$^{-1}$ of $e^+e^-$ collision data collected at or close to the $\Upsilon(4S)$ resonance with the $BABAR$ detector at the SLAC National Accelerator Laboratory.

        Speaker: Racha Cheaib (University of British Columbia)
      • 5:30 PM
        Coffee break

        virtual coffee served

      • 58
        Recent gems from kaon and their repercussions for future directions

        Kaons have played a crucial role in Particle Physics from their early history including some profound discoveries. In this talk I will give account of recent progress on several challenging issues that have been with us for a long time. Seen in the light of this progress what can we learn from many of the flavor anomalies of the past many years will also be discussed.

        Speaker: Amarjit Soni (Amarjit)
      • 59
        Search for New Physics via the $K_L \to \pi^0 \nu \bar{\nu}$ decay at the J-PARC KOTO experiment

        The purpose of the KOTO experiment, being conducted at J-PARC (Ibaraki Japan), is to search for New Physics
        via the rare decay $K_L\rightarrow \pi^0 \nu \bar{\nu}$ using the high intensity $K_L$ beam provided by
        the 30~GeV proton synchrotron.
        The $K_L\rightarrow \pi^0 \nu \bar{\nu}$ decay is suppressed in the standard model, and
        its observation may reveal hints of new physics.
        The signature of $K_L\rightarrow \pi^0 \nu \bar{\nu}$ is two $\gamma$'s from a $\pi^0$ and
        no other particles in the detectors surrounding the decay region.

        For the data collected between 2016 and 2018, a blind analysis technique was adopted to avoid
        human bias in the determination of the selection criteria.
        We unblineded the signal region in the summer of 2019, and observed candidate events.
        Since then, we have been checking our software and hardware, and possibilities of backgrounds that we might have missed.
        In this presentation, we report the progress in the analysis and the obtained feedback from the data taken in 2019 and 2020.

        Speaker: Dr Nobuhiro Shimizu (Osaka University)
      • 60
        New result on the search for the $K^+ \to \pi^+ \nu\bar\nu$ decay at the NA62 experiment at CERN

        The ultra-rare K+ —> pi+nunu decay benefits from a precisely predicted branching ratio in the SM (8.4 +- 1.0) x 10^{-11}, being almost free from theoretical uncertainties, and most importantly from a very high sensitivity to a variety of beyond-the-standard-model scenarios, making it one of the best candidates to reveal indirect effects of new physics in the flavour sector.
        The NA62 experiment at the CERN SPS, designed to measure the branching ratio of K+ —> pi+ nunu with a decay-in-flight technique, collected data in 2016-2018. New results from the analysis of 2018 data, the largest data set so far collected, will be presented. The result will represent the most accurate measurement so far achieved of this ultra-rare decay.
        Future prospects and plans for data taking from 2021 will also be presented.

        Speaker: Radoslav Marchevski
      • 61
        New measurement of the $K^+\to\pi^+\mu^+\mu^-$ decay at NA62

        The flavour-changing neutral current decay $K^+\to\pi^+\mu^+\mu^-$ is induced at the one-loop level in the Standard Model, and is well suited to explore its structure and, possibly, its extensions. The NA62 experiment took data in 2016--2018 with the main goal of measuring the $K^+\to\pi^+\nu\bar\nu$ decay. A scaled down di-muon trigger chain was operating along with the main trigger during the whole data taking period resulting in a large sample of about $3 \times 10^{12}$ kaon decays in the fiducial volume recorded using the di-muon trigger. New results from an analysis of the $K^+\to\pi^+\mu^+\mu^-$ decay using this sample will be presented.

        Speaker: Lubos Bician (CERN)
      • 62
        Latest results on rare kaon decays from the NA48/2 experiment at CERN

        The NA48/2 experiment at CERN reports the first observation of the K± → π± π0 e+ e− decay from an exposure of 1.7×10^11 charged kaon decays recorded in 2003−2004. A sample of 4919 candidates with 4.9% background contamination allows the determination of the branching ratio in the full kinematic region. The study of the kinematic space shows evidence for a structure dependent contribution in agreement with predictions based on chiral perturbation theory. Several P- and CP-violating asymmetries are also evaluated.
        The most precise measurement of the charged kaon semi-leptonic form factors obtained by NA48/2 with 4.4 million Ke3 and 2.3 million Kmu3 events collected in 2004 will also be presented.

        Speaker: Mauro Raggi (LNF INFN)
      • 63
        Latest D0 results on exotic hadrons produced in $p\bar p $ collision

        We selected candidate events for production of the exotic charged charmonium-like states $Z_c^{\pm}(3900)$ decaying to $ J/\psi\pi^{\pm}$ and $X(3872)$ decaying to $J/\psi\pi^{\pm}\pi^{\mp}$. We use 10.4 $\rm fb^{−1}$ of $p\bar p$ collisions recorded by the D0 experiment at the Tevatron collider at $\sqrt s=$1.96 TeV. We measure the $Z_c$ mass and natural width using subsample of candidates originating from semi-inclusive weak decays of b-flavored hadrons and search for the $Z_c$ prompt production. We measure different production properties of the $X(3872)$, such as the prompt fraction as a function of the transverse momentum, that are compared to $\psi(2S)\to \psi\pi^{\pm}\pi^{\mp}$ production. The sample of 10.4 $\rm fb^{−1}$ is also used to search for the inclusive production of the pentaquark states observed in $pp$ collisions at LHCb, $P_c(4400)$ and $P_c(4457)$, decaying to $J/\psi p$.

        Speaker: Alexey Drutskoy
      • 64
        Search for QCD exotic states at CMS

        Novel CMS results in searches for “old" and new quarkonium-like states will be discussed.

        Speaker: Sergey Polikarpov (Moscow Eng. Phys. Inst.)
      • 7:22 PM
        Coffee break
      • 65
        Isospin amplitudes in b-baryon decays at LHCb

        Ratios of isospin amplitudes in hadron decays are a useful probe of the interplay between weak and strong interactions, and allow searches for physics beyond the Standard Model. We present results on isospin amplitudes in b-baryon decays using proton-proton collision LHCb data collected at center-of-mass energies of 7, 8 and 13 TeV.

        Speaker: Sheldon Stone (Syracuse University (US))
      • 66
        Production studies of double Bottomonia and of Bottomonium in association with an electroweak Boson at CMS

        New CMS measurements of the Y(1S) pair production cross section at 13TeV and of the production of Y(nS) mesons in association with an electroweak boson will be discussed.

        Speaker: Sheila Silva Do Amaral (Univ. Estado Rio de Janeiro)
      • 67
        ATLAS results on quarkonia and associated production

        The associated production of vector boson with quarkonia is a key observable for understanding the quarkonium production mechanisms, including the separation of single and double parton scattering components.
        This talk will present the latest measurements from ATLAS on charmonium production at high transverse momentum, and the associated production of a W-boson with a J/psi meson.

        Speaker: Brad Abbott
      • 68
        Hadronic charm meson decays at BESIII

        BESIII has collected data samples corresponding to luminosities of 2.93 fb-1 and 3.19 fb-1 at center-of-mass energies of 3.773 and 4.178 GeV, respectively. The data set collected at 3.773 GeV contains quantum-correlated D0D0bar pairs that allow access to the phase differences between amplitudes. We report the measurements of strong phase differences in D0 decays, including KS/L pi+ pi-, which can reduce the gamma/phi3 measurement systematic uncertainty at LHCb and Belle II. In addition, we report the measurements of the absolute branching fractions and the amplitude analyses of D+, D0, and Ds decays.

        Speaker: Chuangxin Lin (Sun Yat-Sen University)
      • 69
        Recent charm results from Belle

        Using the full data collected with the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, we report the first measurement of charm-mixing $y_{CP}$ in $D^{0}$ decays to the CP-odd final state $K_{S}^{0} \omega$. We present a Dalitz-plot analysis of the three-body decay $D^{0}\to K^{-} \pi^{+} \eta$. Along with these, we present other results related to charm physics at Belle.

        Speaker: Dr Longke Li (Univ. of Cincinnati)
      • 70
        Production studies of D and B mesons at CMS

        New CMS measurements of prompt D*+, D+ and D0 production cross sections at 13TeV are presented together with novel studies of the production of excited Bc states carried out with full Run-II data.

        Speaker: Valentina Mariani (Univ. di Perugia e Sez. dell'INFN)
    • Strong Interactions and Hadron Physics: Session I - Premiere
      Conveners: Radja Boughezal (Argonne National Laboratory), Laura Fabbietti (Technische Universitaet Muenchen (DE)), Sarka Todorova (Charles University (CZ))
      • 71
        Jet production at NLO in the Parton Branching method

        Transverse momentum dependent (TMD) parton distributions obtained from the Parton Branching (PB) method are combined with next-to-leading-order (NLO) calculations of jet production to obtain predictions for LHC jet final states. In addition, a new initial state Parton Shower, which is based on the TMD distributions, and final state Parton Showers are included together with hadronization. We compare our predictions with jet and Z+jet measurements performed at the LHC, finding good agreement. We present first results for multi-jet merging with PB-TMDs, illustrating the application of the method to differential jet rates and transverse momentum spectra.

        Speaker: Armando Bermudez Martinez (CMS-DESY)
      • 72
        Precision measurements of jet production at the ATLAS experiment

        Measurements of jet production are sensitive to the strong coupling constant, high order perturbative calculations and parton distribution functions. In this talk, we present the most recent ATLAS measurements of jet production at 13 TeV. Depending on the availability of the results, we may show measurements of jet and multijet production as well as measurements sensitive to the strong coupling constant.

        Speaker: Peter Loch (University of Arizona (US))
      • 73
        Jet measurements at CMS

        Measurements of jet production in proton-proton collisions at the LHC are crucial for precise tests of QCD, improving the understanding of the proton structure and are important tool for searches for physics beyond the standard model. We present recent measurements of double-differential cross section of jet production at centre-of-mass energy of 13 TeV with 2016 data and compare them to various predictions. We also report studies on the impact of these measurements on the determination of the strong coupling and of parton density functions of the proton.

        Speaker: Cristian Baldenegro Barrera (The Univ. of Kansas)
      • 74
        Measurements of W/Z boson production in association with jets at ATLAS

        Measurements of W/Z-boson production in association with jets provide important test of perturbative QCD prediction and also yield information about the parton distribution functions of the proton. In this talk, differential cross-sections for vector-boson production in association with jets using proton-proton collisions collected by the ATLAS experiment are presented. The data are corrected for detector inefficiency and resolution and compared to state-of-the-art theoretical predictions. The impact of the choice of parton distribution function is also presented.

        Speaker: Camilla Vittori
      • 75
        V+heavy flavor jets and constraints to PDFs in CMS

        The associated production of vector bosons V (W, Z or gamma) and jets originating from heavy-flavour (c or b) quarks is a large background source in measurements of other standard model processes, Higgs boson studies, and many searches for physics beyond the SM. The study of events with a vector boson accompanied by heavy-flavour jets is crucial to refine the theoretical calculations in perturbative QCD, as well as to validate associated Monte Carlo predictions. Differential cross sections in V+ c/b jets are measured as a function of several kinematic observables with the CMS detector at 8 and 13 TeV. The study of the associated production of a vector boson with jets from a c-quark is especially interesting, as it allows to extract information on the proton parton density functions.

        Speaker: Anton Stepennov (Inst. for Theoretical and Exp. Phys.)
      • 76
        Heavy-flavour correlations, jets and multiplicity dependent studies on heavy-flavour hadrons in small systems with ALICE

        In this contribution, the latest heavy-flavour results on the pp
        and p--Pb data samples collected during the LHC Run 2 with ALICE at several center-of-mass energies will be presented.
        A comprehensive study of the multiplicity dependent open heavy-flavour hadron production and quarkonium self-normalised yields in pp collisions at $\sqrt{s}$ = 13 TeV will be shown. Such measurements constitute a valuable tool to characterize Multi-Parton Interactions (MPI), as well as the interplay between hard and soft particle production mechanisms. In particular, these studies include $\psi$(2S) production at forward rapidity, while multiplicity dependent measurements at mid-rapidity will be discussed for D mesons, heavy-flavour decay electrons and inclusive J/$\psi$.
        Moreover, the multiplicity dependent self-normalised yields of
        heavy-flavour decay electrons at mid-rapidity, as well as $v_{2}$ measurements in high-multiplicity events for heavy-flavour decay muons at forward rapidity, will be discussed. Such studies aim to investigate possible collective effects in p—Pb collisions. In addition, measurements of heavy-flavor jet production and fragmentation and heavy-flavour correlations will be presented. These studies give direct access to the initial parton kinematics and allow us to characterize the heavy-quark fragmentation process, as well as to gain information on heavy-quark production mechanisms in pp collisions. Heavy-flavour jets studies are
        extended to heavy-flavour hadron decay electrons and D-meson tagged charged jets measurements in pp and p--Pb collisions at $ \sqrt{s}=5.02$ and $13$ TeV and $\sqrt{s_{\rm NN}}=5.02$ TeV, respectively. The results of the jet-momentum fraction carried by the D meson at $\sqrt{s}=5.02$ and $13$ TeV and by the $\Lambda_{\rm c}$ baryon at $\sqrt{s}=13$ TeV will be discussed as well. The angular correlations of D-mesons and charged particles in pp and p--Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV will be shown and comparison with model calculations will be discussed.

        Speaker: Marianna Mazzilli (Universita e INFN, Bari (IT))
      • 77
        HERA jet data in NNLO fits of HERAPDF and diffractive PDFs

        NNLO predictions for jet production in Deep Inelastic Scattering have recently become available. These are used to extend the QCD HERAPDF2.0Jets fits, that were made to extract PDFs from inclusive HERA data and HERA jet data, from NLO to NNLO. In addition new jet data sets have become available since the publication of ERAPDF2.0 and these are also considered. A simultaneous fit to these data to extract PDFs and $\alpha_s$
        results in a new NNLO determination of $\alpha_s(𝑀_Z)$.

        A new combined fit of diffractive parton distribution functions (DPDFs) to the H1 inclusive neutral-current and dijet production data in diffractive deep-inelastic scattering (DDIS) at next-to-next-to-leading order accuracy (NNLO) is presented. Compared to the previous HERA fits, the presented study includes the high-precision H1 HERA-II data, which represents 40 times higher luminosity for inclusive DDIS data sample and 6 times higher luminosity for the jet data, than previous studies by H1. In addition to the inclusive DDIS data at the nominal centre-of-mass energy $\sqrt{s} = 319$ GeV, also the inclusive data at 252 and 225 GeV are included into the fit. The inclusion of the most comprehensive dijet cross section data , together with their
        NNLO predictions, provide enhanced constraints to the gluon component of the DPDF. The extracted DPDFs are compared to the alternative existing DPDFs at NLO accuracy, and are used to predict cross sections for a large number of the available dijet measurements.

        Speaker: Amanda Sarkar (University of Oxford (GB))
      • 5:30 PM
        Coffee break
      • 78
        HERA data on azimuthal decorrelation and charged particle multiplicity spectra probing QCD dynamics and quantum entanglement effects

        The azimuthal decorrelation angle between the leading jet and scattered lepton in deep inelastic scattering is studied with the ZEUS detector at HERA. The data was taken in the HERA II data-taking period and corresponds to an integrated luminosity of 330 pb${}^{−1}$. Azimuthal angular decorrelation has been proposed to study the
        $Q^2$ dependence of the evolution of the transverse momentum distributions (TMDs) and understand the small-x region, providing unique insight to nucleon structure. Previous decorrelation measurements of two jets have been performed in proton-proton collisions at very high transverse momentum; these measurements are well described by perturbative QCD at next-to-leading order. The azimuthal decorrelation angle obtained in these
        studies shows good agreement with predictions from Monte Carlo models including leading order matrix elements and parton showers.

        New experimental data on charged particle multiplicity distributions are presented, covering the kinematic ranges in momentum transfer $5 < Q^2 < 100$ GeV${}^{2}$ and inelasticity $0.0375 < y < 0.6$. The data were recorded with the H1 experiment at the HERA collider in positron-proton collisions at a centre-of-mass energy of 320 GeV. Charged particles are counted with transverse momenta $P_T > 150$ MeV and pseudorapidity $−1.6 < \eta_{lab} < 1.6$ in the laboratory frame, corresponding to high acceptance in the current hemisphere of the hadronic centre-of-mass frame. Charged particle multiplicities are reported on a two-dimensional grid of $Q^2$, y and on a three-dimensional grid of $Q^2$, y, η. The observable is the probability P(N) to observe N particles in the given $\eta$ region. The data are confronted with predictions from Monte Carlo generators, and with a simplistic model based on quantum entanglement and strict parton-hadron duality.

        Speakers: Dr Zhoudunming Tu (BNL), Zhoudunming Tu (BNL)
      • 79
        Precision measurements of single vector boson production at ATLAS

        Precision measurements of the production cross-sections of W/Z boson at LHC provide important tests of perturbative QCD and information about the parton distribution functions for quarks within the proton. In this talk, we present fiducial and differential cross sections for inclusive W+, W− and Z boson production using data collected by the ATLAS experiment at center-of-mass energies of 2.76 TeV, 8 TeV and 13 TeV. The measurements are corrected for detector inefficiency and resolution and compared with state-of-the-art theoretical calculations.

        Speaker: Kristin Lohwasser (University of Sheffield (GB))
      • 80
        Role of IR-Improvement in LHC/FCC Physics

        One may use amplitude-based resummation in QED X QCD to achieve IR-improvement of unintegrable singularites in the infrared regime to arbitrary precision in principle. We illustrate such improvement in specific examples in precision LHC/FCC physics.

        Speaker: Bennie Ward (Baylor University (US))
      • 81
        Precision QCD at the LHeC and the FCC-eh

        The LHeC and the FCC-eh are the cleanest, high resolution microscopes that the world can build in the nearer future. Through a combination of neutral and charged currents and heavy quark tagging, they will unfold the parton structure of the proton with full flavour decomposition and unprecedented precision. In this talk we will present the most recent studies on the determination of proton parton densities as contained in 2020 White Paper on the LHeC. We will also demonstrate the prospects for a per mille accuracy determination of the strong coupling constant, both through scaling violations in inclusive DIS and jet production, as well as their combination.

        Speaker: Claire Gwenlan (University of Oxford (GB))
      • 7:00 PM
        Coffee break
      • 82
        Soft-gluon effective coupling

        We consider the extension of the CMW soft-gluon effective coupling in the context of soft-gluon resummation for QCD hard-scattering observables beyond the next-to-leading logarithmic accuracy. We present two proposals of a soft-gluon effective coupling that extend the CMW coupling to all perturbative orders. Although both effective couplings are well-defined in the physical four-dimensional space time, we examine their behaviour in 𝑑=4−2\ep space time dimensions. We uncover an all-order perturbative relation with the cusp anomalous dimension: the (four dimensional) cusp anomalous dimension is equal to the 𝑑-dimensional soft-gluon effective coupling at the conformal point \ep=𝛽(\as). We present the explicit expressions of the two soft-gluon couplings up to O(\as^2).
        In the four-dimensional case we compute the two soft couplings up to O(\as^3).

        Speaker: Daniel Enrique De Florian Sabaris (International Center for Advanced Studies (AR))
      • 83
        Revealing proton structure with neural networks

        Understanding the internal structure of the proton — that is, how it is built from its fundamental constituents, quarks and gluons — is one of the great challenges of modern high-energy physics. The three-dimensional distribution of quarks and gluons is encoded in terms of the so called generalized parton distributions (GPDs), and the most promising access to these functions is via the process of deeply virtual Compton scattering (DVCS).

        We will show our global analyses of the available DVCS data leading to the extraction of relevant structure functions in a model-dependent way. To overcome the problem of model bias, which is particularly dangerous in this context, we describe the analogous procedure using unbiased neural networks. As an application, we discus the possibility of measurement of pressure inside the proton [1].

        [1] K. Kumericki, Measurability of pressure inside the proton, Nature 570 (2019) E1

        Speaker: Kresimir Kumericki (University of Zagreb)
      • 84
        Dedicated data analyses for improving PDFs: Study of proton parton distribution functions at high x and charm production in charged DIS at HERA

        Proton parton distribution functions (PDFs) are poorly constrained by existing data for Bjorken x larger than 0.6, and the PDFs extracted from global fits differ considerably from each other. A technique for comparing predictions based on different PDF sets to observed event numbers is presented. It is applied to compare predictions from the most commonly used PDFs to published ZEUS data at high Bjorken $x$. A wide variation is found in the ability of the PDFs to predict the observed results. A scheme for including the ZEUS high-$x$ data in future PDF extractions is discussed.

        Charm production in charged current deep inelastic scattering has been measured for the first time in 𝑒±𝑝 collisions, using data collected with the ZEUS detector at HERA, corresponding to an integrated luminosity of 358 pb−1 separately for 𝑒+𝑝 and 𝑒−𝑝 scattering at a centre-of-mass energy of 𝑠√=318 GeV within a kinematic phase-space region of 200 GeV2<𝑄2< 60000 GeV2 and 𝑦< 0.9, where 𝑄2 is the squared four-momentum transfer and 𝑦 is the inelasticity. The measured cross sections of electroweak charm production are consistent with expectations from the Standard Model within the large statistical uncertainties.

        Speaker: Ritu Aggarwal (SPPU)
      • 85
        Investigation of high energy behaviour of HERA data

        We analyse the high precision HERA $F_2$ data in the low-$x$, $x<0,01$, and very-low-$x$, $x<0.001$, regions using $\lambda$-fits. $\lambda$ is a measure of the rate of rise of $F_2$ defined by $F_2 \propto (1/x)^{\lambda}$. We show that $\lambda$ determined in these two regions, at various $Q^2$ values, is systematically smaller in the very-low-$x$ region as compared to the low-$x$ region. We discuss some possible physical interpretations of this effect.

        Our observation that the value of the exponent $\lambda$ decreases at small values of $x$, indicates that measurements at the future ep colliders, like VHEeP or LHeC will become exciting, as they will approach the high energy limit of the virtual photon-hadron cross sections, where DGLAP and BFKL meets and the confinement effects should become simple.

        The analysis is based on Phys.Lett. B802 (2020) 135199.

        Speaker: Dr Agnieszka Łuszczak (Cracow University of Technolog & DESY Hamburg)
      • 86
        TMD densities at leading and higher order from the Parton Branching method

        We present a new determination of Transverse Momentum Dependent (TMD) parton distributions obtained with the Parton Branching (PB) method at LO, NLO and NNLO. The PB TMDs are extracted from fits to precision DIS data using DGLAP splitting functions at leading and higher order. We extract both the collinear part and the transverse momentum dependent part of the parton densities.
        In addition the fit sensitivity to dynamical resolution scales on TMD evolution in different kinematical region of $x$ and $Q^2$ will be investigated.

        Speaker: Sara Taheri Monfared (Deutsches Elektronen-Synchrotron (DE))
      • 87
        Determination of the Parton Density Functions of the Proton with the ATLAS data

        In this talk we present fits to determine parton distribution functions (PDFs) using inclusive W/Z-boson and W+jets measurements from the ATLAS experiment at the LHC. The ATLAS measurements are used in combination with deep-inelastic scattering data from HERA. The ATLAS W and Z boson data exhibit sensitivity to the valence quark distributions and the light quark sea composition. The parton distribution functions extracted using W+jets data show an improved determination of the high-x sea-quark densities, while confirming the unsuppressed strange-quark density at lower x<0.02 found by previous ATLAS analyses.

        Speaker: Mark Sutton
      • 88
        Isolated photon production and pion-photon correlations in high-energy pp and pA collisions

        A phenomenological study of the isolated photon production in high energy pp and pA collisions at RHIC and LHC energies is performed. Using the color dipole approach we investigate the productioncross section differential in the transverse momentum of the photon considering three different phenomenological models for the universal dipole cross section. We also present the predictions for the rapidity dependence of the ratio of pA/pp cross sections. As a further test of the formalism, for different energies and photon rapidites we analyse the correlation function in azimuthal angle ∆φ between the photon and a forward pion. The characteristic double-peak structure of the correlation function around ∆φ = π observed previously for Drell-Yan pair production is found for isolated photon emitted into the forward rapidity region which can be tested by future experiments.

        Speaker: Dr Michal Sumbera (Nuclear Physics Institute, Acad. of Sciences of the Czech Rep. (CZ))
    • Heavy Ions: Session I - Premiere
      Conveners: Dr Barbara Antonina Trzeciak (Czech Technical University in Prague), Dennis Perepelitsa (University of Colorado Boulder)
      • 89
        Measurement of electroweak-boson production in p-Pb and Pb-Pb collisions with ALICE at the LHC

        W and Z bosons are clean probes of the initial-state effects in hadronic collisions, being formed in the hard scatterings taking place in the initial stages, and being insensitive to the presence of any strongly-interacting medium. This is especially true at the LHC energies, where having a clear picture of the initial state is mandatory to properly interpret the later stages characterising the complex evolution of p-Pb and Pb-Pb collisions. In particular, measurement of W and Z boson production in p-Pb and Pb-Pb collisions at the LHC provides constraints on the nPDFs of the (anti-)quarks in a phase-space region that is poorly constrained by previous experiments.

        ALICE measures W and Z boson production in the muonic decay channels at forward rapidities ($2.5 < y_\mathrm{lab} < ~4$). In this contribution, recent measurements on the Z and W boson production in p-Pb and Pb-Pb collisions at the center-of-mass energies per nucleon pair of $\sqrt{s_\mathrm{NN}} = 8.16$ and 5.02 TeV, respectively, are presented. Results, including invariant production yield and nuclear modification factors as a function of rapidity and collision centrality, are compared to calculations obtained with or without including nuclear modifications of the PDFs, as well as to results obtained by other LHC experiments.

        Speaker: Mingrui Zhao (China Institute of Atomic Energy (CN))
      • 90
        Quarkonia photo-production and Z production in heavy ion collisions

        Vector meson photo-production in ultra-peripheral Pb-Pb collisions is sensitive to nuclear parton distribution functions, and probe models of vector meson production in nuclear interactions with strong electromagnetic fields. In pPb collisions, measurements of the Z production in the forward (pPb) and backward (Pbp) configurations are sensitive to the nPDFs in different kinematic domains, such that both probes enable complementary studies of the structure of the nucleus. In this talk, we present the latest results on charmonium production in PbPb ultra-peripheral collisions and on Z production in pPb and Pbp collisions at LHCb.

        Speaker: Giulia Manca (Universita` degli studi di Cagliari and INFN, Cagliari, IT)
      • 91
        Electroweak probes in heavy-ion collisions with ATLAS

        Electroweak bosons produced in lead-lead (Pb+Pb) collisions are an excellent tool to constrain initial-state effects which affect the rates of hard-scattering processes in nucleus-nucleus interactions. The production yields of massive electroweak bosons, observed via their leptonic decay channels, offer a high-precision test of the binary collision scaling expected in Pb+Pb and a way to quantify nuclear modifications of the parton distribution functions (PDFs). The large samples of Pb+Pb data at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV collected by the ATLAS experiment in 2015, and the corresponding high-statistics $pp$ data at the same collision energy used as a baseline, allow for a detailed experimental study of these phenomena and comparisons to predictions from a variety of theoretical calculations. This talk presents the latest ATLAS results on electroweak boson production, including updated results on Z production and high-precision W boson results in Pb+Pb collisions. Inclusive production of prompt photons in proton-lead~($p$+Pb) collisions at $\sqrt{s_{\mathrm{NN}}}$ = 8.16 TeV is also covered. Various predictions of nuclear modifications to PDFs are discussed.

        Speaker: Jakub Andrzej Kremer
      • 92
        Considerations on the suppression of charged particle production in high energy heavy ion collisions

        Results from RHIC for Au-Au and from LHC for Pb-Pb collisions are compiled in terms of $R_{AA}$, $R_{CP}$ and ratio of the $p_T$ spectra, normalized with the corresponding $dN_{ch}/d\eta$, for each centrality to the most peripheral one ($R^N_{CP}$). The studies are focused on the $p_T$ range in the region of maximum suppression evidenced in the experiment. The $R_{CP}$ for 4 GeV/c < $p_T$ < 6 GeV/c as a function of $\sqrt{s_{NN}}$ evidences a suppression enhancement from $\sqrt{s_{NN}}$ = 39 GeV up to 200 GeV after which a saturation sets in up to the highest energy of $\sqrt{s_{NN}}$ =5.02 TeV. For collision energies from 200 GeV (Au-Au) up to 5.02 TeV (Pb-Pb), within the error bars, a good scaling of $R_{AA}$ as a function of <$N_{part}$> is evidenced. This scaling improves for $R_{AA}$, when only the core contribution is considered. $R^N_{CP}$ evidences the same saturation starting from 200 GeV collision energy and a very good scaling as a function of <$N_{part}$> for $\sqrt{s_{NN}}$ =200 GeV (Au-Au) and for $\sqrt{s_{NN}}$ =2.76 TeV and $\sqrt{s_{NN}}$ =5.02 TeV (Pb-Pb). A comparison in terms of Bjorken energy density times formation time ($\varepsilon_{Bj}\cdot\tau$) and particle density per unit of rapidity and overlapping area ($(dN/dy)/S_{\perp}$) is presented.

        Speaker: Mihai Petrovici (Horia Hulubei National Institute of Physics and Nuclear Enginee)
      • 93
        Jets and medium evolution in Pb-Pb collisions at the LHC energies from the EPOS initial state

        We present the results for PbPb collisions at 2.76 TeV LHC energy from a parton shower integrated with a hydrodynamic evolution. The initial hard (jet) partons are produced along with soft partons in the initial state EPOS approach. The EPOS initial state typically contains multiple hard scatterings in each event. The soft partons melt into a thermalized medium, which is described with a 3 dimensional event-by-event viscous hydrodynamic approach. The jet partons then propagate in the hydrodynamically expanding medium. The total jet energy gets progressively “degraded” according to a state-of-the-art microscopic radiative energy loss Monte Carlo for the low-virtuality jet partons. The full evolution proceeds in a concurrent mode, without separating hydrodynamic and jet parts. We discuss two features of PbPb collision:
        1) A jet overlap effect [1] which emerges due to multiple hard parton production in each heavy-ion collision event
        2) Jet energy loss in the medium and its modification due to the LPM effect.

        [1] Iu. Karpenko, J. Aichelin, P. Gossiaux, M. Rohrmoser, and K. Werner,
        Phys. Rev. C 101, 014905 (2020)

        Speaker: Dr Iurii Karpenko (CTU Prague)
      • 94
        Jet production and fragmentation at colliders

        Fragmentation (or in general, hadronization) is the transition from a colored and energetic parton to a colorless hadron is a rich and dynamical process in QCD quantified by the fragmentation function. Fast moving hadrons (or jets) are produced by the fragmentation of colored quarks or gluons that are produced during hard collisions at short distances. The determination of a characteristic time scale for the color neutralization would shed light on the properties of color confinement and help answer the question: how hadrons emerge out of quarks and gluons?

        Since the earliest days of collider physics, jets have been an important tool in the exploration of QCD and have provided important discoveries and insights, in all colliding systems, including e-e, e-p hadron-hadron, and nucleus-nucleus. With the advances in experimental techniques, and corresponding theoretical progress over time, jets have become precision tools for studying the partonic structure of matter.
        Starting at the Relativistic Heavy Ion Collider (RHIC) at BNL, a suppression by a factor of five of the yield of high $p_\mathrm{T}$ hadrons in Au-Au collisions, compared to proton-proton collision at the same energy was observed and called “jet quenching”. The same phenomenon was confirmed by the heavy-ion program at the CERN’s Large Hadron Collider (LHC) where the jet quenching phenomenon was observed at much greater collision energies that became accessible, allowing new and more detailed characterization of the quark-gluon plasma. While interacting with the medium, a modification of the jet structure and a redistribution of jet energy as well as a modification of their fragmentation pattern is expected.
        Jets in (SI)DIS are also guaranteed to contribute at the Electron-Ion Collider (EIC) to a variety of key electron-nucleus and electron-hadron physics topics in particular the study of hadronization, aiming to shed light on the nature of color neutralization and confinement.

        A selection of results (not focussed on a particular experiment) on jet physics will be discussed and compared to theoretical calculations. The measurements that will be discussed may include $p_\mathrm{T}$-differential jet production cross sections or detailed studies of the parton shower through observables like the jet mass, jet fragmentation functions or jet substructure observables. Well defined jet shapes observables can also provide complementary information on the fragmentation process.

        Speaker: Alexandre Shabetai (Centre National de la Recherche Scientifique (FR))
      • 5:54 PM
        Coffee break
      • 95
        Jet Measurements in Heavy Ion Collisions with the ATLAS Experiment

        Jets are an important tool to study the hot, dense matter produced in Pb+Pb collisions at the LHC. They are produced at the early stages of the collisions and are expected to be modified as they propagate through the hot and dense medium. This leads to energy loss as well as modification of the jet structure. This talk presents the latest jet measurements from Run 2 heavy-ion collisions data from ATLAS. The results shown in this talk include measurements of the angular distribution of charged particles around the jet axis, measurements of the flavor-dependence of energy loss via b-jets and jets associated with photons and Z bosons, and measurements of the jet internal structure characterized by the transverse momentum scale for the hardest splitting. Furthermore, the latest results on the dijet momentum balance in $pp$, Xe+Xe, and Pb+Pb collisions will be presented. The talk will also show a measurement of the single jet yields as a function of the azimuthal angle with respect to the event plane in Pb+Pb collisions. The data are compared to state of the art theoretical models and provide important information to understand the strength and mechanism of the jet quenching.

        Speaker: Helena Santos (LIP - Lisbon)
      • 96
        Universal features of the medium-induced gluon cascade and jet quenching in expanding media

        We present a study of the impact of the expansion of deconfined medium on single-gluon emission spectra and the jet suppression factor ($𝑄_{𝐴𝐴}$) within the BDMPS-Z formalism. These quantities are calculated for three types of media (static medium, exponentially decaying medium and Bjorken expanding medium). The distribution of medium-induced gluons and the jet $𝑄_{𝐴𝐴}$ are calculated using the evaluation of in-medium evolution with splitting kernels derived from the gluon emission spectra. A universal behavior of splitting kernels is derived for low-𝑥 and high-𝑥 regimes in the asymptote of large times and its impact on the resulting jet $𝑄_{𝐴𝐴}$ is discussed. For the full phase-space of the radiation, the scaling of jet $𝑄_{𝐴𝐴}$ with an effective quenching parameter is derived. The importance of the medium expansion for precise modeling of jet quenching phenomena as well as steps towards generalizing the results to other jet quenching observables are discussed.

        Speaker: Dr Souvik Priyam Adhya (Institute of Particle and Nuclear Physics Faculty of Mathematics and Physics, Charles University)
      • 97
        Overview of the latest jet physics results from ALICE

        Collisions of ultra-relativistic heavy ions are used to create strongly interacting matter in the regime of high-energy densities and temperatures. Under these conditions color confinement of quarks and gluons in hadrons breaks down and a new state of matter called Quark-Gluon Plasma is formed. Properties of this medium can be inferred based on observed modifications of produced jets. Recently, new tools were developed to study jet properties more differentially. These observables are based on jet-shape and jet-substructure measurements or employ hadron-jet correlations. The talk will review the latest results from these jet analyses performed by the ALICE Collaboration in pp and Pb-Pb collisions.

        Speaker: James Mulligan (University of California, Berkeley (US))
      • 98
        Jet quenching and effects of non-Gaussian transverse-momentum broadening on di-jet observables

        I am going to report on recent study, at a qualitative level, production of jet pairs in ultrarelativistic nuclear collisions within a framework combining High Energy Factorisation (HEF) and in-medium propagation of jet particles that takes into account stochastic transverse forces as well as medium-induced radiation. We find that the resulting di-jet observables feature the behaviour deviating from that of jet-pairs which undergo transverse-momentum broadening following the Gaussian distribution. The result follows from application of only recently solved by Kutak, Straka, Placzek evolution equation formulated by Blaizot, Dominguez, Iancu, Mehtar-Tani, Dominguez.
        The application of recently solved equation allows for studies of interplay of energy loss via branchings and rescattering leading to broadening therefore in the end to more detailed study of structure of jets in Heavy Ion Collisions.

        Speaker: Krzysztof Kutak (Instytut Fizyki Jadrowej Polskiej Akademii Nauk)
      • 99
        Hard probes in heavy ion collisions with CMS

        We review recent CMS results on hard probes of heavy ion collisions, including jet and electroweak boson production.

        Speaker: Xiao Wang (Univ. of Illinois at Chicago)
      • 100
        Precision Jet/Event Substructure Using Collinear Drop

        I will present a new class of jet/event substructure observable called collinear drop and its use in the search for novel signatures of jet modifications and medium responses. It is demonstrated using Monte Carlo simulations generated with Jewel how underlying jet-medium interactions can be systematically examined using collinear-drop observables. Studies using LEP open data and applications to Electron Ion Collider will be discussed. Analytic insights on the modifications of such observables will also be given using soft-collinear effective theory with Glauber gluon interactions.

        Speaker: Dr Yang-Ting Chien (Stony Brook University)
    • Astro-particle Physics and Cosmology: Session I - Premiere
      Convener: Constantinos Skordis (Institute of Physics AS CR)
      • 101
        Dark matter Annihilation in Most Luminous and the Most Massive Ultracompact Dwarf Galaxies (UCD)

        We explore the potential astrophysical signatures of dark matter
        (DM) annihilations in ultracompact dwarf galaxies (UCDs) considering two of the richest known galaxy clusters within 100 million light-years, nominally, Virgo and Fornax. Fornax UCD3 is the most luminous UCD and M59 UCD3 is the most massive UCD. With the detection of a 3.5 million solar mass black hole (BH) in Fornax UCD3, we carefully model several DM enhanced profiles scenarios, considering both the presence of the supermassive black hole (SMBH) and DM. For Fornax UCD3, the comparison of the stellar and dynamical masses suggests that there is little content of DM in UCDs. M59 UCD3 did not receive the same attention in simulations as Fornax UCD3, but deep radio imaging and X-ray observations were performed for M59 UCD3 and can be used to place limits in DM content of these UCDs. We work with an average estimative of dark matter content considering the Salpeter and Kroupa mass functions. We model Fornax UCD3 and M59 UCD3 to have a DM content that is the average of these mass functions. We then analyze the constraints for Fornax and M59 UCD3 coming from gamma-ray and radio sources considering in our simulations, a dark matter particle with mass between 10 − 34 GeV. In the absence of strong γ-ray signatures, we show that synchrotron emission from electrons and positrons produced by DM annihilations can be very sensitive to indirect DM search. We find that DM parameters can be significantly constrained at radio frequencies and the spike profiles play an interesting rule in order to deep study the enhancements of DM & BH interactions in ultracompact galaxies.

        Speaker: Prof. Fortes Elaine (Unipampa)
      • 102
        Heat Engine for Black Holes in Presence of Cyclic Thermodynamics Behavior

        The study of astrophysics context of massive theory leads to the black hole heat engine may be regarded as a possible energy source of the high energy astrophysical phenomena. Therefore, a black hole engine may be regarded as a possible source of power gamma rays and ultrahigh energy cosmic rays. Propose of this research was study to heat engine provided by black holes in presence of cyclic thermodynamics behavior. The main motivation was to investigate the rate of change of the cyclic process based on massive theory leads to the effect as different of the efficiency of black hole engines in massive gravity. It would be interesting to investigate the efficiency calculated on the horizon with these three different topologies were spherical flat and hyperbolic which then make a comparison. The results in this research will be shown that the highest efficiency for the heat engine belongs to black holes with the hyperbolic horizon, while the lowest one belongs to the spherical black holes.

        Speaker: Dr Atirat Maksuwan (Pathumwan Institute of Technology)
      • 103
        Production of Thermal Axions across the ElectroWeak Phase Transition

        If there are light axions in nature they will very probably leave a cosmic background, just like neutrinos. In this work we complete the study of thermal axion production above the QCD Phase Transition (QCDPT) by including the scatterings of the axion with the longitudinal components of the W and Z bosons. We study the predictions for pa4ticular QCD axion scenarios, like the KSVZ and the so-called Minimal Flavour Violating Axion.

        Speaker: Fernando Arias Aragón (Universidad Autónoma de Madrid)
      • 4:45 PM
        Coffee break
      • 104
        Generation of magnetic fields in cosmic string wakes

        We describe a novel method of generating magnetic fields in cosmic string wakes from neutrino currents. We show that neutrino currents act as a cross-perturbation across the cosmic string wake. This cross perturbation along with the high Reynolds number generates a magnetic field in the wake of the cosmic string. The neutrino current is generated by the neutrinos rotating around the Abelian Higgs strings. As the string moves through the cosmic plasma, the velocity kick generated by the motion of the string will enhance the neutrino current in the wake region. The neutrino current density depends on its distance from the string and is oscillatory in nature. This leads to neutrino density gradients in the plasma. We have shown that these neutrino gradients give rise to electron gradients in the plasma, which in turn generate magnetic fields of the order of $10^{13}$ Gauss.

        Speaker: Sovan Sau (University of Hyderabad)
      • 105
        On the Abraham-Minkowski controversy: Can the time delay of the gamma-ray bursts travelling through interstellar space be explained without invoking the Lorentz-invariance violation?

        The ANTARES neutrino telescope and other experiments are searching for more detailed information on the previously observed shifted high-energy neutrinos from the gamma-ray bursts travelling through interstellar space. Many theoretical models have been proposed to explain this phenomenon, based on assuming the Lorentz-invariance violation. In this talk I shall show that the dispersion phenomenon of gamma-ray in an interstellar space considered as a cosmic plasma can explain this effect. This in turn indicates that invoking the drastic assumption of Lorentz-invariance violation for such a problem can be premature.

        Speaker: Prof. Masud Chaichian (University of Helsinki)
      • 106
        New Properties of primary and secondary cosmic rays measured by AMS

        We present precision high statistics measurements of primary cosmic rays protons, Helium, Carbon and Oxygen and the secondary cosmic rays Lithium, Beryllium and Boron measured by Alpha Magnetic Spectrometer on ISS in the rigidity range from 2 GV to 3 TV.
        These measurements are based on more than one billion nuclei collected by AMS during first 7 years of operation from May 2011 to May 2018. The unexpected properties of these cosmic rays as well as high statistics secondary-to-primary flux ratios such as Li/C,Be/C, B/C, Li/O, Be/O and B/O will be discussed.

        Speaker: Dr Mercedes Paniccia (Universite de Geneve (CH))
      • 6:30 PM
        Coffee break
      • 107
        New Properties of Neon, Magnesium, Silicon, and Sulfur Primary Cosmic Rays observed by the Alpha Magnetic Spectrometer on the International Space Station

        Neon, Magnesium, Silicon, and Sulfur nuclei in cosmic rays are thought to be mainly of primary origin, they are mainly produced and accelerated in astrophysical sources. We report the latest precise measurements of the Ne, Mg, Si, and S individual spectra in the rigidity range from 2 GV to 3 TV by the Alpha Magnetic Spectrometer based on the data collected during its first 7 years of operation. Unexpectedly, compared with the spectra of light nuclei Helium, Carbon, and Oxygen, the spectra of heavy nuclei Ne, Mg, Si, and S show distinctly different new properties.

        Speaker: Qi Yan (Massachusetts Inst. of Technology (US))
      • 108
        Anisotropy of Elementary Particle Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the ISS

        Analysis of anisotropy of the arrival directions of galactic protons, electrons and positrons has been performed with the Alpha Magnetic Spectrometer on the International Space Station. These results allow to differentiate between point-like and diffuse sources of cosmic rays for the explanation of the observed excess of high energy positrons. The AMS results on the dipole anisotropy are presented along with the discussion of implications of these measurements.

        Speaker: Miguel Angel Velasco Frutos (Centro de Investigaciones Energéti cas Medioambientales y Tecno)
      • 109
        Precision Measurement of the Monthly Boron, Carbon and Oxygen Fluxes in Cosmic Rays with the Alpha Magnetic Spectrometer on the International Space Station

        Cosmic Rays (CR) inside the Heliosphere are subject to the effects of the Solar Modulation, resulting from their interaction with the solar wind and with the interplanetary magnetic field. These effects are strongly related to the solar activity and lead to a temporal variation of the cosmic ray intensity near Earth for rigidities up to few tens of GV. Previous AMS results on proton and helium spectra showed how the two fluxes behave differently in time. To better understand these unexpected results, one should therefore study the next most abundant species such as carbon, oxygen, and boron.
        In this contribution, the precision measurements of the monthly boron, carbon and oxygen fluxes for the period from May 2011 to May 2018 with Alpha Magnetic Spectrometer on the International Space Station are presented. This period covers the ascending phase of solar cycle 24 together with the reversal of the Sun’s magnetic field polarity through the maximum. The detailed temporal variations of the boron, carbon and oxygen fluxes are shown up to rigidities of 60 GV. The time dependence of the B/C, B/O and C/O fluxes ratios are also presented.

        Speaker: Jian Tian (Universita e INFN, Perugia (IT))
      • 8:15 PM
        Coffee break
      • 8:25 PM
        General discussion
    • Dark Matter Detection: Session I - Premiere
      Conveners: Dr Silvia Scorza (SNOLAB), Torben Ferber (DESY)
      • 110
        New Inelastic Channels for Sub-GeV Dark Matter Scattering

        As the search for dark matter continues down to lower and lower masses, the kinematics of sub-GeV dark
        matter scattering require moving beyond the approximation of free-particle scattering. I will describe two inelastic
        channels relevant for sub-GeV dark matter detection which necessarily involve the condensed matter properties of
        common detector materials: the Migdal effect in liquid nobles, and plasmon excitation in semiconductors. I will
        outline the theoretical basis for these processes, discuss the importance of many-body effects in accurately
        predicting the scattering rates, and speculate on whether these processes have already been observed at numerous
        experiments.

        Speaker: Yonatan Kahn (University of Illinois)
      • 111
        Dark Matter - phonon scattering

        Light dark matter interacting in a crystal or fluid must scatter off a
        collective excitation (phonon) rather than off individual nuclei. I will
        set up the appropriate low energy effective theory and show how to
        calculate the dark matter scattering rate for various dark matter models
        and target materials.

        Speaker: Simon Knapen (CERN)
      • 112
        String fragmentation in supercool confinement as a new dark matter production mechanism

        A new strongly-coupled sector can feature a supercooled confinement transition in the early universe. When fundamental quanta of the strong sector are swept into expanding bubbles of the confined phase, the distance between them is large compared to the confinement scale. The string of flux linking the fundamental quanta fragments and in the process produces an enhanced number of composite states. Furthermore, the resulting composite states are highly boosted in the CMB frame, which leads to additional particle production through the subsequent deep inelastic scattering. This opens several new avenues of investigation, in this talk I will focus on the one related to the composite dark matter relic density.

        Speaker: Filippo Sala (LPTHE)
      • 4:45 PM
        Coffee break
      • 113
        Recent Searches for Hidden-Sector Particles with BABAR

        Many models of dark matter and hidden sectors predict new particles with masses below the electroweak scale. Low-energy electron-positron colliders such as BABAR are ideally suited to discover these hidden-sector particles. We present several recent BABAR searches for low-mass hidden- sector particles, including new searches for prompt and long-lived leptonically decaying hidden scalars produced in association with tau leptons. This search is sensitive to viable models that could account for the muon $g-2$ excess. We also present results a search for dark muonic forces, and for invisible particles produced in six-quark final states. These examples show the importance of $B$-factories in constraining and discovering new hidden-sector physics beyond the Standard Model.

        Speaker: Yunxuan Li (California Institute of Technology)
      • 114
        Search for an Axion-Like Particle in B -> K a, with a -> gamma gamma at BABAR

        Many extensions of the Standard Model include the possibility of light new particles, such as axions or dark matter candidates. These scenarios can be probed using the large data sets collected by $B$-factories, complementing measurements performed at the LHC.
        We report on a search for an Axion-like particle (ALP), $a$, produced in the Flavor-Changing Neutral-Current decay $B\to K a$, with $a\to \gamma\gamma$, which is expected to be competitive with the corresponding Standard-Model electroweak processes. This search, performed by using a dataset of about 470 million $B\bar{B}$ pairs collected by the $BABAR$ experiment at the PEP-II $e^+e^-$ collider, is sensitive to ALP masses in the range 0 - 4.78 GeV.

        Speaker: Brian Shuve (Harvey Mudd College)
      • 115
        Dark Sector first results at Belle II

        The Belle II experiment at the SuperKEKB energy-asymmetric $e^+ e^-$ collider
        is a substantial upgrade of the B factory facility at the Japanese KEK laboratory.
        The design luminosity of the machine is $8\times 10^{35}$ cm$^{-2}$s$^{-1}$ and
        the Belle II experiment aims to record 50 ab$^{-1}$ of data, a factor of 50 more
        than its predecessor. During 2018, the machine has completed a commissioning run,
        recording a data sample of about 0.5 fb$^{-1}$. Main operations started in
        March 2019 with the complete Belle II detector: an integrated luminosity
        of 10 fb$^{-1}$ has been collected so far. These early data sets,
        with specifically designed low multiplicity triggers, offer already the
        possibility to search for a large variety of dark sector particles in
        the GeV mass range, complementary to LHC and to dedicated low energy experiments.
        The talk will review the status of the dark sector searches at Belle II, with a focus
        on the discovery potential of the early data, and show the first results.

        Speaker: Enrico Graziani (Universita' di Roma III)
      • 6:15 PM
        Coffee break
      • 116
        DarkSide-20k and the Direct Dark Matter Search with Liquid Argon

        Dual phase noble liquid Time Projection Chambers (TPCs) offer a
        competitive and scalable way to search for dark matter directly via
        elastically scattering off of detector target nuclei and electrons.
        The Global Argon Dark Matter Collaboration (GADMC) is undertaking an
        ambitious global program from the extraction and purification of
        Underground Argon (UAr), depleted in 39Ar which reduces the internal
        background, to the development of $25 cm^2$ Silicon Photo Multiplier
        (SiPM) modules capable of resolving single photoelectrons.
        DarkSide-20k is the next stage of this program and will be the next
        generation dual phase Argon TPC. DarkSide-20k will be housed in the
        Gran Sasso underground laboratory (LNGS) and has an exposure goal of
        ~100 tonne-years with zero instrumental background in expectation of a
        WIMP-nucleon cross section of $10^{-47} cm^2$ for a WIMP mass of 1TeV/$c^2$
        during a 5-year run. An overview of the DarkSide experimental program
        will be presented with a focus on the upcoming DarkSide-20k detector
        and the new technologies involved.

        Speaker: Dr Luigi Pio Rignanese (Universita e INFN, Bologna (IT))
      • 117
        The Light Dark Matter eXperiment, LDMX

        The constituents of dark matter are still unknown, and the viable possibilities span a very large mass range. Specific scenarios for the origin of dark matter sharpen the focus on a narrower range of masses: the natural scenario where dark matter originates from thermal contact with familiar matter in the early Universe requires the DM mass to lie within about an MeV to 100 TeV. Considerable experimental attention has been given to exploring Weakly Interacting Massive Particles in the upper end of this range (few GeV – ~TeV), while the region ~MeV to ~GeV is largely unexplored. Most of the stable constituents of known matter have masses in this lower range, tantalizing hints for physics beyond the Standard Model have been found here, and a thermal origin for dark matter works in a simple and predictive manner in this mass range as well. It is therefore a priority to explore. If there is an interaction between light DM and ordinary matter, as there must be in the case of a thermal origin, then there necessarily is a production mechanism in accelerator-based experiments. The most sensitive way, (if the interaction is not electron-phobic) to search for this production is to use a primary electron beam to produce DM in fixed-target collisions. The Light Dark Matter eXperiment (LDMX) is a planned electron-beam fixed-target missing-momentum experiment that has unique sensitivity to light DM in the sub-GeV range. This contribution will give an overview of the theoretical motivation, the main experimental challenges and how they are addressed, as well as projected sensitivities in comparison to other experiments.

        Speaker: Andrew James Whitbeck (Texas Tech University (US))
      • 118
        Dark Matter searches with the ATLAS detector

        The presence of a non-baryonic dark matter (DM) component in the Universe is inferred from the observation of its gravitational interaction. If dark matter interacts weakly with the Standard Model it would be produced at the LHC, escaping the detector and leaving a large missing transverse momentum as their signature. The ATLAS detector has developed a broad programme to directly search for DM. The results of  recent searches on 13 TeV pp data, their interplay and interpretation will be presented.

        Speaker: Ben Carlson (University of Pittsburgh)
    • Operation, Performance and Upgrade of Present Detectors: Session I - Premiere
      Conveners: Sowjanya Gollapinni (Los Alamos National Laboratory (US)), Stefania Beole (Universita e INFN Torino (IT)), Jiri Kroll (Czech Academy of Sciences (CZ))
      • 119
        THE LIGO-VIRGO OBSERVATION RUN 3 (APRIL 2019 – APRIL 2020)

        Observation Run 3 (O3) is the longest period of data taking for the two Advanced LIGO detectors and the Advanced Virgo detector to date. From April 1st, 2019 to April 30th, 2020, the instruments accumulated 12 months of data, with a 1-month commissioning break in October 2019. In this talk, I will review the performance of the three detectors both separately and within the global network of ground-based gravitational-wave interferometric detectors: sensitivity, duty cycle, noise stability and variations. I will briefly describe the O3 public alerts and the first published results of this run. To conclude, I will summarize the plans of the two collaborations for the coming years: alternatively upgrade phases and data taking periods with improved performance.

        Speaker: Dr Nicolas Arnaud (LAL (CNRS/IN2P3 and Université Paris-Sud))
      • 120
        The AugerPrime Upgrade of the Pierre Auger Observatory.

        To answer many questions still open in the field of Ultra-High-Energy Cosmic Rays, the Pierre Auger Collaboration started a significant upgrade of the Observatory, called AugerPrime.

        The main goal of the upgrade is to improve the mass composition sensitivity of the surface detector on a shower-to-shower basis, in order to explore the cosmic ray composition at energies above 10$^{19}$eV. At energies unexplored by terrestrial accelerators, it will be possible to study the properties of multi-particle production and to search for new or unexpected changes of hadronic interactions. Moreover, in the region of the suppression of the cosmic ray flux, charged particle astronomy will benefit from the knowledge of the fraction of light primaries for composition-selected anisotropy searches.

        After a discussion of the motivations for upgrading the Pierre Auger Observatory, a description of the detector upgrade will be provided, together with an evaluation of the expected performance and the improved physics sensitivity. Finally the first data collected will be presented.

        Speaker: Gabriella Cataldi (INFN, Sezione di Lecce, Lecce, Italy)
      • 121
        The Mu2e Electromagnetic Calorimeter

        The “muon-to-electron conversion” (Mu2e) experiment at Fermilab will search for the Charged Lepton Flavour Violating neutrino-less coherent conversion /mu^-N(A,Z) -> e-N(A,Z) of a negative muon into an electron in the field of an aluminum nucleus. The observation of such physics process would be the unambiguous evidence of the existence of physics beyond the Standard Model. The Mu2e detector is composed of a tracker and an electromagnetic calorimeter and an external veto for cosmic rays. The calorimeter plays an important role in providing excellent particle identification capabilities, a fast online trigger filter and aiding track reconstruction. The calorimeter requirements are to provide a large acceptance for ~100 MeV electrons and reach: 1) a time resolution better than 0.5 ns; 2) an energy resolution O(10%); 3) a position resolution of 1 cm. The detector has been designed as a state-of-the-art crystal calorimeter and employs pure Cesium Iodide (CsI) crystals and UV-extended Silicon PhotoMultipliers (SiPMs) readout by fast analog electronics with a digitization at 200 Msps. A design consisting of two disks, each one made of 674 crystals readout by two large area 2x3 arrays of SiPMs of 6x6 mm^2 area can largely satisfy Mu2e requirements. The detector has to satisfy many other demanding requests, such as keeping the required performance in an extremely hostile environment with 1 tesla axial magnetic field, high radiation level and 10^-4 Torr vacuum. We have verified with a campaign of test beams that the CsI crystals will withstand the expected dose and fluence with a small light yield loss and the SiPMs will function under the expected neutron irradiation when cooled to 0 C. This requires a good engineering design of the calorimeter mechanics and its cooling system, in terms of performance as well as reliability.
        A large scale detector prototype has been constructed and tested at the beam test facility in Frascati. It consists of 51 pre-production crystals readout by a 102 SiPMs. All the tests and progresses done so far to define the calorimeter design, the satisfying results obtained with the test beam of the prototypes as well as the current production phase will be reported in this presentation. At the moment, all the components for the first disk have been tested and characterized. According to the Mu2e Collaboration plans, calorimeter construction will begin in spring 2020.

        Speaker: Luca Morescalchi (INFN - Pisa)
      • 122
        Construction and performance of 4-D CsI calorimeter for the $K_L¥to ¥pi^0¥nu¥bar{¥nu}$ search of KOTO experiment

        One of the key issues of the search for the $K_L\to \pi^0\nu\bar{\nu}$ decay mode is to suppress the backgrounds to the signature with only two photons from the $\pi^0$ in the final state. We use an electromagnetic calorimeter and hermetic veto counters in the KOTO experiment at J-PARC. The calorimeter is made of 50 cm-long undoped CsI crystals stacked in a 1.9 m-diameter cylinder. Each crystal is read out with a PMT on the back surface of the crystals. A major background is caused by neutrons generating two showers in the calorimeter. Neutrons tend to have interactions deeper than photons. In the autumn of 2018 we upgraded the calorimeter by installing 4000 silicon photomultipliers (SiPMs) on the front surface of the crystals. The depth information is available by measuring the timing difference between SiPMs and PMTs. The construction and performance of this new calorimeter by using data of 2019 will be presented. Less than 0.5 neutron background events are expected when we reach the sensitivity of one $K_L\to \pi^0\nu\bar{\nu}$ event. The signature has a branching fraction of $(3.0\pm0.3)\times10^{-11}$ in the standard model.

        Speaker: Katsushige Kotera (DESY/Shinshu University (JP))
      • 123
        Analysis of the magnetic field in the Fermilab muon g-2 experiment

        The muon g-2 experiment at Fermilab seeks to confirm or deny the ~3.5 $\sigma$ discrepancy between the Standard Model prediction of the muon anomalous magnetic moment, $a_{\mu}$, and its experimental value. The experiment measures $a_\mu$ directly from the ratio of the muon precession frequency in a uniform storage ring magnetic field to the Larmor frequency of free protons in the same field. Every few days, an NMR ‘trolley’ maps out the storage ring field. Field drifts between trolley runs are tracked by ‘fixed’ NMR probes embedded in the vacuum chamber walls. These measurements are interpolated to determine the field in the storage region, which is convolved with the muon beam distribution to determine the effective magnetic field, $\langle$B$\rangle$. A precise determination of $\langle$B$\rangle$ is crucial; half of the error budget is attributed to the magnetic field uncertainty. The magnetic field analysis techniques and a summary of the results will be presented.

        Speaker: Saskia Charity (Fermi National Accelerator Laboratory)
      • 124
        Muon g-2 beam and spin systematic effects for Run-1

        The muon g-2 Experiment at Fermilab measures the anomalous magnetic moment, $a_\mu$, with improved precision compared to the previous experiment at Brookhaven National Lab.
        The greater than 3 standard deviations difference between Standard Model prediction and the previous BNL, $a_\mu$, measurement hints at the possibility of new physics. Positive polarized muons are circulated in the storage ring and the experiment precisely determines the muon anomalous precision frequency, $\omega_a$, (spin precession relative to momentum). The $\omega_a$ is determined from calorimeter measurements of decay positron time and energy. The experiment also needs to precisely determine the average magnetic field seen by the muons, which is based on continuous NMR probe measurements. A detailed understanding of beam and spin systematic effects is required for the precise determination of $\omega_a$. This talk gives a review of the beam and spin systematic effects that are significant for determination of $\omega_a$ in the 2018 Run-1 analysis.

        Speaker: Dr Sudeshna Ganguly (University of Illinois at Urbana-Champaign)
      • 125
        ALPIDE pixel detector for tracking in space.

        The ALPIDE MAPS chip used in the ALICE silicon tracker upgrade, represents the state of the art for pixel-based tracking with silicon.
        We investigated the possibility to use the ALPIDE chip in space applications using a setup derived from the ALICE Outer Barrel HIC.
        We first addressed the issue of the power consumption and we will report on a special setup that provides a relevant power saving.
        We then passed to address heat dissipation, material qualification for space, performance in vacuum and resistance to launch vibrations.
        From our qualification test the ALPIDE chip results as a viable solution for space applications.

        Speaker: Paolo Zuccon (Universita degli Studi di Trento and TIFPA Trento)
      • 5:15 PM
        Coffee break
      • 126
        The MicroBooNE Experiment

        MicroBooNE is a 100-ton scale liquid-argon time projection chamber (LArTPC) neutrino experiment located on the Booster neutrino beamline at Fermilab. The experiment first started collecting neutrino data in October 2015. The detector, the first in the short-baseline neutrino program at Fermilab, is the longest operating LArTPC to date and plays an important role in a phased program towards the construction of massive kiloton scale detectors for future long-baseline neutrino physics (DUNE). We present results on the operation and performance of the detector after four years of data taking, highlighting accomplishments towards reconstruction, calibration and detector physics.

        Speaker: Ralitsa Sharankova (Tufts University)
      • 127
        Construction, installation and operation of ProtoDUNE-SP

        The single-phase liquid argon TPC at CERN (ProtoDUNE-SP) is an engineering prototype for the first module of the DUNE far detector. This prototype which has dimensions of a cube of about 10m edge, provide full validation of the use of the membrane tank technology for large dimension cryostats. Furthermore, the very high performance of the protoDUNE-SP TPC with more than 500 days of continuous and stable operation, demonstrated the reliability of the LAr detection technology at a scale never tested before. In this talk we will review the main characteristics and milestones of the construction and installation of protoDUNE-SP which provide a series of benchmarks for DUNE. The performance for several different detector working points will also be discussed.

        Speaker: Stefania Bordoni (Michigan State University (US))
      • 128
        Performance of photon detectors in ProtoDUNE-SP

        The single-phase liquid argon prototype at CERN (ProtoDUNE-SP) is designed to act as a testbed and prototype for the elements of the first far detector module of DUNE. ProtoDUNE-SP collected data in the H4-VLE beamline at CERN in the autumn of 2018 and accumulated 4M particles (electrons, muons, pion, kaons and protons) ranging from 0.3 to 7 GeV/c and a large number of cosmic ray events since then. ProtoDUNE-SP employs three different photon detector technologies. This talk will present the performance of the photon detectors in ProtoDUNE-SP, including detector calibration, efficiency measurements, attenuation studies, timing resolution, calorimetric energy reconstruction from scintillation light and energy resolution of electrons.

        Speaker: Dante Totani (Fermi National Accelerator Lab. (US))
      • 129
        Measurement of space charge effects in ProtoDUNE-SP

        The accumulation of positive ions in a LArTPC located on the surface can distort the electric field and the reconstructed particle trajectories. It is critical to understand and correct for the space charge effects in order to achieve the desired spatial and calorimetric resolutions in the LArTPC. This talks will present the measurement of space charge effects using cosmic ray muons in ProtoDUNE-SP.

        Speaker: Michael Mooney (Colorado State University)
      • 130
        Energy calibration of the ProtoDUNE-SP TPC

        The single-phase liquid argon prototype at CERN (ProtoDUNE-SP) acts as a validation of the design for the DUNE single-phase far detector. With a total mass of 770 tons, it is the largest monolithic liquid argon single-phase time projection chamber in the world. ProtoDUNE-SP collected test-beam in autumn of 2018 and has been collecting cosmic and special calibration data since the end of 2018. With more than 500 days of continuous operation, the long-term performance, stability and calorimetric measurements of the detector will be discussed in this talk.

        Speaker: Richard Diurba (University of Minnesota)
      • 131
        The MCP based Large Area PMTs for Neutrino Detector

        The large scalar neutrino detectors (JUNO, HyperK), need the 20 inch area PMTs as the photo-detection device for their large photocathode coverage and less electronic channels. In 2009, the researchers at IHEP have conceived a new concept of large area PMTs, of which the small MCP units replace the bulky Dynode chain. After several years R&D, the 20 inch MCP-PMT was successfully produced. This type of PMT has large sensitive area, high QE, and large P/V for good single photon detection. The JUNO ordered 15000 pic 20 inch MCP-PMTs in Dec.2015. Then, from 2017 to 2020, all the 20-inch PMTs will be produced and tested one by one in the company for JUNO. This presentation will talk about the R&D, the mass production and batch test result of the 13K pieces of MCP-PMT prototypes for JUNO. Further more, another Flower-liked MCP-PMT was designed with the TTS less than 5ns, and this new type of 20 inch MCP-PMT has already evaluated by the PMT group in HyperK, and also be used in the LHAASO project in China.

        Speaker: Sen Qian (Institute of High Energy Physics,CAS)
      • 132
        Performance of the SoLid reactor neutrino detector

        The SoLid collaboration operates since 2018 a 1.6 ton neutrino detector near the Belgian BR2 reactor, with as a main goal the search for observation of the oscillation of electron anti-neutrinos to previously undetected flavor states.
        The highly segmented SoLid detector employs a novel compound scintillation technology based on PVT scintillator in combination with a LiFZnS screens containing 6Li isotopes. The experiment has demonstrated a channel-to-channel response that can be controlled to the level of a few percent, an energy resolution of better than 14% at 1 MeV, and a determination of the interaction vertex with a precision of 5cm.

        In this contribution we will discuss the technology choices that were made to construct the SoLid experiment, the experience gained from its commissioning, calibration, and the detector performance characteristics during two years of non-stop operation. We will also discuss an ongoing upgrade program of the detector and the expected improvements in performance associated with that.

        Speaker: Noe Roy (Laboratoire de Physique des 2 infinis Irène Joliot-Curie)
      • 7:00 PM
        Coffee break
      • 133
        The sPHENIX experiment at RHIC

        The sPHENIX experiment is the successor the PHENIX experiment at RHIC and is optimized to study heavy flavor and jets arising from heavy ion collisions. The detector utilizes advanced technologies such as a monolithic active pixel vertex detector while also repurposing technologies originally from other high energy experiments such as BaBar, ATLAS and ALICE. In this talk we will show the design and status of the sPHENIX detector whilst also presenting the projected physics capabilities and planned measurements that the collaboration will work to achieve. sPHENIX is expected to begin data taking in 2023.

        Speaker: Cameron Dean (Los Alamos National Laboratory (US))
      • 134
        ALICE upgrades for Run 3

        The ALICE detector at the LHC is undergoing major upgrades during the Long Shutdown 2 (2019/20). A new Inner Tracking System (ITS) is being installed and the Time Projection Chamber (TPC) has been equipped with new GEM-based read-out chambers. Together with the new front-end-electronics they will enable us to read out the TPC continuously and record the full minimum-bias interaction rate of 50 kHz in Pb-Pb. The new Monolithic Active Pixel Sensors used for the ITS will significantly improve the impact parameter resolution and tracking efficiency, especially for particles with low transverse momentum, as well as the readout rate capability. In addition, a pixel tracker will be installed in front of the muon spectrometer, and the readout electronics of several other detectors are being replaced with faster technology. These upgrades also require a completely new online computing system that has the dual task of data acquisition and performing the first pass of the reconstruction to compress data and remove noise hits from the data stream. This talk will summarize the motivation and realization of the upgrades and report on the status of the installation and commissioning.

        Speaker: Stefano Matthias Panebianco (Université Paris-Saclay (FR))
      • 135
        Status of the Fast Interaction Trigger for ALICE Upgrade

        As part of the preparations for the LHC Run 3 and 4, the ALICE experiment at CERN is making a thorough upgrade of the setup. In particular, all ALICE subsystems have to cope with the increased interaction rate of 50 kHz in Pb-Pb and up to 1 MHz in pp collisions. Comparing with Run 2, this is up to two orders of magnitude more collisions. The solution for the majority of ALICE detectors is to switch to a continuous readout, but several of the older systems (TRD, CPV, HMPID, EMCAL, DCAL and PHOS) would still need an external trigger or a wakeup signal.

        The Fast Interaction Trigger (FIT) will generate a minimum-bias and a multiplicity trigger with the maximum latency below 425 ns. It will also measure collision time with a resolution of < 40 ps and serve as the main ALICE luminometer, providing direct, real-time feedback to the LHC for the beam tuning. In the offline analysis FIT will aid in the reconstruction of the vertex position, assess forward particle multiplicity, centrality and event plane, and will be used for the study of diffractive physics at forward rapidity.

        FIT consists of three sub-systems: a fast Cherenkov detector array using MCP-PMTs as photosensors, a large scintillator ring employing a novel light collection system, and a scintillator-based Forward Diffractive Detector. After a short description of the detector components, functionalities and a brief summary of the physics objectives, the key test results of the assembled detector will be presented and discussed.

        Speaker: Maciej Slupecki (Helsinki Institute of Physics (FI))
      • 136
        Performance of the LHCb detector in the Run 2

        The LHCb experiment is a flavour physics detector, designed to study decays of b and c hadrons for measurements of CP violation and rare decays. Its performance is based on precision tracking and particle-identification systems. In order to accomplish its wide program of physics measurements, the LHCb collaboration has developed in the past years a set of algorithms for reconstruction of the trajectories of charged particles, as well as identification of charged and neutral particles. Several data-driven approaches have been developed to provide a precise calibration of the tracking and particle-identification efficiencies, which are crucial ingredients of many physics analysis. A number of novel strategies have been developed during Run 2 of the LHC to improve the precision of this calibration. This talk presents an overview of the LHCb performance in Run 2 of the LHC, with emphasis on recent improvements.

        Speaker: Martina Pili (University of Oxford (GB))
      • 137
        The LHCb Upgrade Programme for Run 3 and Run 4

        The LHCb experiment at the LHC is designed to capture decays of b- and c-hadrons for the study of CP violation and rare decays. It has already had a transformative impact in the field of flavour physics as well as making many general purpose physics measurements in the forward region. At the end of Run-II, many of the LHCb measurements will remain statistically dominated. For this reason