Low-x 2021

Name: Low-x 2021
Start: 2021-09-26T08:45:00+02:00
End: 2021-10-01T13:30:00+02:00
Location: No location set

26 Sept 2021, 08:45 → 1 Oct 2021, 13:30 Europe/Rome

Description

IMPORTANT NEWS (July 10 2021)

Low x will happen this Fall 2021 in person Thanks to all participants!

Connection details:

https://zoom.us/j/95795678245?pwd=anFrZU14T1cyanlsSFVNYzQvNzFOQT09

A mandatory Green Pass is required for all attendees of the workshop.
Those who are not vaccinated will have to do the test every 48 hours.
Tests can be performed at the hotel at a cost of Euro 15.00 (but a certificate will not be issued).
If you need a certificate to return to your country of origin, it is possible to do it in Portoferraio at a cost of Euro 50.00, and if you need an English translation, the cost will be Euro 60.00.

It is compulsory to wear masks in the common areas inside the hotel, but not in the conference room since there will be enough separation between people.

The best way to reach Elba is to fly to Rome, Florence or Pisa, and take the train to Piombino where you can take a ferry to Elba (there are ferries very often, every 30 minutes or so). A shuttle organized by the local organizers will come to pick you up at the harbour to go to the hotel.

The purpose of the Low-x workshop is to stimulate discussions between experimentalists and theorists in diffractive hadronic physics, QCD dynamics at low-x, parton saturation and exciting problems in QCD at HERA, Tevatron, LHC, RHIC and the future EIC.

The conference venue will be at Hotel La Biodola in Elba island in Italy from September 26th through October 1st 2020. Full boarding at the hotel (breakfast, lunch and dinner) will be included in the price of the hotel. By Summer timescale, we will confirm if the event can be in person or remote.

The fees will be about 200 Euros.

Low-x is an annual workshop whose spirit is to favour fruitful and informal discussions between experimentalists and theorists in low-x, diffractive hadronic physics and exciting problems in QCD at HERA, Tevatron and LHC.

The workshop will allow theorists and experimentalists from different areas (LHC, RHIC, EIC, HERA...) to meet and contribute together. The workshop is by invitation and about 70 physicists are expected to attend in order to favor exchanges between participants. Discussion sessions (about 2 hours per day) will be organized so that new ideas in theory or experiments can be further developed.

Low-x has been held since DESY (1993), then Saclay (May 1994), Cambridge (July 1995), Durham (June 1996), Madrid (June 1997), Berlin (June 1998), Tel Aviv (June 1999), Oxford (July 2000), Cracow (June 2001), Antwerpen (September 2002), Nafplio (June 2003), Prague (September 2004), Sinaia (June 2005), Lisbon (June 2006), Helsinki (September 2007), Crete (July 2008), Ischia (September 2009), Kavala (June 2010), Santiago de Compostela (June 2011), Cyprus (June 2012), Eilat (June 2013), Kyoto (June 2014), Sandomierz (September 2015), Gyongyos (June 2016), Bisceglie (June 2017), Reggio Calabria jointly with Diffraction 2018 (August 2018), Nicosia, Cyprus (August 2019).

The Workshop is organized and sponsored by the University of Kansas and by EMMI.

Contact

christophe.royon@ku.edu

Registration

Registration form

Participants

88 View full list

Monday 27 September
- 14:00 → 14:10
  
  Welcome 10m
  
  Speakers: Angelo Scribano Memoria (Universita & INFN Pisa (IT)), Christophe Royon (The University of Kansas (US))
- 14:10 → 15:45
  PDFs and QCD session I
  - 14:10
    
    From small to large x: toward a unified formalism for particle production in high energy collisions 20m
    
    Speaker: Jamal Jalilian-Marian (Baruch College)
    
    low-x-2021.pdf
  - 14:30
    
    Recent results on PDFs and alpha_s from HERA (remote) 25m
    
    Speakers: Amanda Sarkar (University of Oxford (GB)), amanda sarkar
    
    Lowx_2021.pdf
  - 14:55
    
    Parton distribution functions and intrinsic charm at LHCb 25m
    
    Speaker: Cristina Sánchez Gras (Nikhef National institute for subatomic physics (NL))
    
    Lowx-CSanchezGras-210927.pdf
  - 15:20
    
    Precision QCD measurements from CMS 25m
    
    Speaker: Toni Makela (Deutsches Elektronen-Synchrotron (DE))
    
    Precision_QCD_measurements_from_CMS.pdf
- 15:45 → 16:10
  
  Coffee break 25m
- 16:10 → 18:35
  PDFs and QCD session II
  - 16:10
    
    Direct measurement of short-lived particle dipole moments at the LHC 20m
    
    Speaker: Nicola Neri (Università degli Studi e INFN Milano (IT))
    
    Neri_Low-X21.pdf
  - 16:30
    
    J\psi polarization in high multiplicity hadronic collisions 20m
    
    Speakers: Tomasz Stebel (Institute of Theoretical Physics Jagiellonian University), Tomasz Stebel (CERN)
    
    Low_x_2021_stebel.pdf
  - 16:50
    
    Determination of proton parton distribution functions using ATLAS data 25m
    
    Speaker: Zhiqing Philippe Zhang (IJCLab, Orsay (FR))
    
    Zhang_atlas_210927.pdf
  - 17:15
    
    Speeding up machine learning-based inference for Hadronic physics via Hadamard matrices 20m
    
    Speaker: Thomas Chen (Academy for Mathematics, Science, and Engineering)
  - 17:35
    
    The Diffractive Contribution to Deep Inelastic Lepton-Proton Scattering: Implications for QCD Momentum Sum Rules and Parton Distributions 25m
    
    Speaker: Stanley J. Brodsky (SLAC National Accelerator Laboratory, Stanford University)
    
    Low-x 2021 sjb 2.pdf
  - 18:00
    
    Discussion session: PDFs, QCD 35m
    
    Speakers: Cyrille Marquet (CPHT - Ecole Polytechnique), Dimitri Colferai (University of Florence), Krzysztof Kutak (Instytut Fizyki Jadrowej Polskiej Akademii Nauk)
- 19:00 → 19:40
  
  Welcome reception 40m
- 20:00 → 22:00
  
  Dinner 2h
Tuesday 28 September
- 09:00 → 10:45
  BFKL, low x, saturation session I
  - 09:00
    
    Search for BFKL signatures in CMS (remote) 25m
    
    Speaker: Salim Cerci (Adiyaman University (TR) - Istanbul University (TR))
    
    Lowx_2021_Salim_Cerci.pdf
  - 09:25
    
    RFT and Self-duality 20m
    
    Speaker: Michael Lublinsky (Ben-Gurion University of the Negev (IL))
    
    Lowx2021.pdf
  - 09:45
    
    Two-particle correlations in multi-Regge kinematics (remote) 20m
    
    Speaker: Grigorios Chachamis (LIP, Lisbon)
    
    lowx2021.pdf
  - 10:05
    
    Mueller-Tang jets with Next-to-Leading Order Impact Factors 20m
    
    Speaker: Federico Deganutti
    
    F.DeganuttiLowX2021.pdf
    
    F.DeganuttiLowX2021.pdf
  - 10:25
    
    Is BFKL factorization valid for Mueller-Tang jets? 20m
    
    Speaker: Dimitri Colferai (University of Florence)
    
    colferai.pdf
- 10:45 → 11:10
  
  Coffe break 25m
- 11:10 → 13:10
  BFKL, low x, saturation session II
  - 11:10
    
    Black disk radius constraint from a gray disc model description of the pp cross-section 20m
    
    Speaker: Irais Bautista Guzman (Centro de Investigación y de Estudios Avanzados del IPN (MX))
    
    IBautista_Lowx_21_2.pdf
  - 11:30
    
    Phenomenology of the hadronic structure at low-x (remote) 20m
    
    Speakers: Francesco Giovanni Celiberto (Università della Calabria and INFN Cosenza (Italy)), Francesco Giovanni Celiberto (ECT*/FBK Trento & INFN-TIFPA)
    
    talk_Low-x_2021_Celiberto_HAS_sx.pdf
  - 11:50
    
    Twist analysis of the Balitsky-Kovchegov equation 20m
    
    Speaker: Leszek Motyka
    
    lowx_motyka.pdf
  - 12:10
    
    LHCf experiment: current status and future prospect (remote) 25m
    
    Speaker: Yoshitaka Itow
    
    lowx-itow20210928small.pdf
  - 12:35
    
    Discussion session: low x, BFKL 35m
    
    Speakers: Cyrille Marquet (CPHT - Ecole Polytechnique), Dimitri Colferai (University of Florence), Krzysztof Kutak (Instytut Fizyki Jadrowej Polskiej Akademii Nauk)
- 13:10 → 14:30
  
  Lunch break 1h 20m
- 14:30 → 16:15
  BFKL, low x, saturation session III
  - 14:30
    
    On transverse gluon polarization at small x 20m
    
    Speaker: Cyrille Marquet (CPHT - Ecole Polytechnique)
    
    low-x21.ppt
    
    marquet_low-x.pdf
  - 14:50
    
    Forward dijets in proton-nucleus collisions at next-to-leading order 20m
    
    Speaker: Yair Mulian
    
    low-x.pdf
  - 15:10
    
    Forward hadronization and the muon puzzle in air showers 25m
    
    Speaker: Tanguy Pierog (KIT)
    
    Pierog_CR_muon_2021.pdf
  - 15:35
    
    Medium induced cascades and transverse momentum dependence of gluon distribution 20m
    
    Speaker: Krzysztof Kutak (Instytut Fizyki Jadrowej Polskiej Akademii Nauk)
    
    KutakLowx2021.pdf
  - 15:55
    
    Phenomenology studies of Mueller-Tang and Mueller-Navelet jets (remote) 20m
    
    Speaker: Cristian Baldenegro Barrera (The University of Kansas (US))
    
    cbaldenegro_mn_mt_v3.pdf
- 16:15 → 16:40
  
  Coffee break 25m
- 16:40 → 19:00
  jets, final state, low x session I
  - 16:40
    
    The LHC Spin project 25m
    
    Speakers: Marco Santimaria (INFN e Laboratori Nazionali di Frascati (IT)), Marco Santimaria
    
    santimaria_lhcspin.pdf
  - 17:05
    
    Jet cross section measurements in CMS (remote) 25m
    
    Speaker: Deniz Sunar Cerci (Adiyaman University (TR) - Istanbul University (TR))
    
    Lowx_2021_DenizSunarCerci.pdf
  - 17:30
    
    Precision measurements of jet production at the ATLAS experiment (remote) 25m
    
    Speaker: Francesco Giuli (INFN e Universita Roma Tor Vergata (IT))
    
    Lowx_FGiuli_300921.pdf
  - 17:55
    
    New results on probing limitations of collinear QCD in lepton-jet correlations (remote) 25m
    
    Speaker: Ben Nachman (Lawrence Berkeley National Lab. (US))
    
    HERA_lowxSeptember2021.pdf
  - 18:20
    
    Discussion session: low x, BFKL, jets 40m
    
    Speakers: Cyrille Marquet (CPHT - Ecole Polytechnique), Dimitri Colferai (University of Florence), Krzysztof Kutak (Instytut Fizyki Jadrowej Polskiej Akademii Nauk)
- 20:00 → 22:00
  
  Dinner 2h
Wednesday 29 September
- 09:00 → 11:00
  Diffraction and forward physics session I
  - 09:00
    
    TOTEM results 20m
    
    Speaker: Frigyes Janos Nemes (CERN (also at Wigner RCP Budapest, Hungary))
    
    Lowx_Elba_2021_Frigyes_Nemes_v4.pdf
  - 09:20
    
    The discovery of the odderon by the D0 and TOTEM collaborations (remote) 20m
    
    Speakers: Carlos Arturo Avila Bernal (Universidad de los Andes), Carlos Avila Bernal (Universidad de los Andes (CO))
    
    LOW_X_2021_C_Avila_v2.pdf
  - 09:40
    
    Properties of the Odderon extracted from a meta-analysis of experimental data 20m
    
    Speaker: Tamas Csorgo (Wigner Research Centre for Physics (Wigner RCP) (HU))
    
    2021-09-30-Csorgo-Odderon-4-Discussion-Low-x-Elba-v3.pdf
    
    2021-09-30-Csorgo-Odderon-4-Discussion-Low-x-Elba-v3.pptx
    
    2021-09-30-Csorgo-Odderon-Properties-Low-x-Elba-v6.pdf
    
    2021-09-30-Csorgo-Odderon-Properties-Low-x-Elba-v6.pptx
    
    Publication in Eur. Phys. J. C 81, 180 (2021)
    
    Publication in Eur. Phys. J. C 81, 611 (2021).
  - 10:00
    
    Odderon: Lost or Found? (remote) 20m
    
    Speakers: Vladimir Petrov (Institute for High Energy Physics of NRC Kurchatov Institute (R), Vladimir Petrov, Vladimir Petrov (Joint Institute for Nuclear Research (JINR)), Vladimir Petrov
    
    Odderon Elba.pdf
  - 10:20
    
    Observation of Odderon Effects at LHC energies - A Real Extended Bialas-Bzdak Model Study 20m
    
    Speakers: Istvan Szanyi (Hungarian Academy of Sciences (HU)), István Szanyi (Eötvös Loránd University)
    
    Publication in Eur. Phys. J. C 81, 180 (2021)
    
    szanyi_low-x_2021_elba_v2.pdf
  - 10:40
    
    Summary of the odderon discovery (remote) 20m
    
    Speakers: Kenneth Osterberg (University of Helsinki), Kenneth Osterberg (Helsinki Institute of Physics (FI))
    
    KO_Odderon_discovery_lowx_2021.pdf
- 11:00 → 11:20
  
  Coffee break 20m
- 11:20 → 13:10
  Diffraction and forward physics session II
  - 11:20
    
    Elastic photon-initiated production at the LHC: the role of hadron-hadron interactions (remote) 20m
    
    Speaker: Lucian Harland-Lang (University of Oxford)
    
    lhl_lowx_2021.pdf
  - 11:40
    
    FACET: a very forward multiparticle spectrometer from CMS 20m
    
    Speaker: Michael Albrow (Fermi National Accelerator Lab. (US))
    
    FACET LowX 20210929-a.pdf
    
    FACET LowX 20210929-a.pptx
  - 12:00
    
    On holographics derivation of basic properties of QCD glueballs (remote) 20m
    
    Speaker: Dmitry Melnikov (Rutgers University)
  - 12:20
    
    From soft to hard diffraction in ultraperipheral collisions at the LHC 20m
    
    Speakers: Mark Strikman, Mark Strikman (Penn State University), Mark Strikman (Pennsylvania State University (US))
    
    elbatalk.pdf
  - 12:40
    
    Discussion session: odderon and soft physics 30m
    
    Speakers: Christophe Royon (The University of Kansas (US)), Kenneth Osterberg (University of Helsinki), Kenneth Osterberg (Helsinki Institute of Physics (FI))
- 13:10 → 14:30
  
  Lunch break 1h 20m
- 15:00 → 19:30
  
  Excursion in Elba 4h 30m
- 20:00 → 22:00
  
  Dinner 2h
Thursday 30 September
- 09:00 → 10:40
  Heavy ion session
  - 09:00
    
    Collectivity in heavy ion interactions at CMS 25m
    
    Speaker: Georgios Krintiras (The University of Kansas (US))
    
    Flow_Low-X.pdf
  - 09:25
    
    Light hadron and photon production in pPb collisions at LHCb (remote) 25m
    
    Speakers: Thomas Boettcher (University of Cincinnati (US)), Thomas Julian Boettcher (University of Michigan (US))
    
    Boettcher_Lowx_30Sept2021_v2.pdf
  - 09:50
    
    Probing initial state with photons and neutral mesons in ALICE 25m
    
    Speaker: Jens Robert Luhder (Westfaelische Wilhelms-Universitaet Muenster (DE))
    
    2021-09-26_Low_x_2021_Probing-initial-state-with-neutral-mesons-in-ALICE.pdf
  - 10:15
    
    Top results in heavy ions in CMS 25m
    
    Speaker: Luis Alcerro Alcerro (The University of Kansas (US))
    
    Low-x_2021.pdf
- 10:40 → 11:00
  
  Coffee break 20m
- 11:00 → 13:10
  Heavy ion - Vector boson session
  - 11:00
    
    Charmonia photo-production in ultra-peripheral and peripheral PbPb collisions with LHCb (remote) 25m
    
    Speakers: Weisong Duan (South China Normal University (CN)), Weisong Duan (South China Normal University)
    
    low x-Weisong_v2.pdf
  - 11:25
    
    Measurement of W and Z boson production in association with jets at ATLAS 25m
    
    Speaker: Laura Fabbri (Universita e INFN, Bologna (IT))
    
    EW@LowX21_Elba.pdf
  - 11:50
    
    V+jets results from CMS 25m
    
    Speakers: Vieri Candelise (Universita di Roma I "La Sapienza"-Universita & INFN, Roma I), Vieri Candelise (Universita e INFN Trieste (IT))
    
    VClowX.pdf
  - 12:15
    
    Vector-boson scattering, diboson and triboson production at ATLAS 25m
    
    Speaker: Despoina Sampsonidou (Tsung-Dao Lee Institute (CN) & Shanghai Jiao Tong Univ. (CN))
    
    Lowx_2021_DSampsonidou.pdf
  - 12:40
    
    Discussion: heavy ions, vector bosons 30m
    
    Speakers: Georgios Krintiras (The University of Kansas (US)), Irais Bautista Guzman (Centro de Investigación y de Estudios Avanzados del IPN (MX))
- 13:10 → 14:30
  
  Lunch break 1h 20m
- 14:30 → 16:45
  Diffraction and forward physics session III
  - 14:30
    
    The CMS Precision Proton Spectrometer Project for the HL-LHC 25m
    
    Speakers: Mario Deile (CERN), Mario Deile (CERN)
    
    lowx-hllhc.pdf
  - 14:55
    
    Overview of ATLAS forward proton detectors for LHC Run 3 and plans for the HL-LHC (remote) 25m
    
    Speaker: Maciej Piotr Lewicki (Polish Academy of Sciences (PL))
    
    lowX2021.pdf
  - 15:20
    
    Anomalous coupling studies with intact protons 20m
    
    Speaker: Christophe Royon (The University of Kansas (US))
    
    lowx2021.pdf
  - 15:40
    
    Study of anomalous exclusive t tbar protduction at the LHC 20m
    
    Speaker: Andrea Bellora (Universita e INFN Torino (IT))
    
    Bellora_Lowx2021.pdf
  - 16:00
    
    Diffractive results from CMS and TOTEM (remote) 25m
    
    Speaker: Cristian Baldenegro Barrera (The University of Kansas (US))
    
    cbaldenegro_diffractive_cmstotem.pdf
  - 16:25
    
    Inclusive diffractive production of top quark(s) 20m
    
    Speaker: Michael Pitt (CERN)
    
    Diffractive_tops_MPitt.pdf
- 16:45 → 17:10
  
  Coffee break 25m
- 17:10 → 19:30
  Diffraction and forward physics session IV
  - 17:10
    
    The Precision Proton Spectrometer of CMS: performance and prospects 25m
    
    Speaker: Ada Solano (Universita' di Torino e INFN (IT))
    
    Solano-LOWX2021.pdf
  - 17:35
    
    Photon induced processes results from CMS 25m
    
    Speaker: Beatriz Ribeiro Lopes (Deutsches Elektronen-Synchrotron (DE))
    
    Low_x_talk_beatriz_lopes.pdf
  - 18:00
    
    Photon-photon fusion measurements at ATLAS 25m
    
    Speaker: Krzysztof Cieśla (Polish Academy of Sciences (PL))
    
    kciesla_yy_fusion_measurements_at_atlas.pdf
  - 18:25
    
    Hard Diffraction at the LHC - Feasibility Studies and Experimental Aspects 20m
    
    Speaker: Maciej Trzebinski (Polish Academy of Sciences (PL))
    
    Trzebinski_LowX_2021.pdf
  - 18:45
    
    Discussion session: inclusive and exclusive diffraction 45m
    
    Speakers: Leszek Motyka, Mario Deile (CERN), Michael Albrow (Fermi National Accelerator Lab. (US)), Valentina Avati (AGH University of Science and Technology (PL))
- 20:00 → 23:00
  
  Workshop dinner 3h
Friday 1 October
- 09:00 → 10:55
  Vector meson session I
  - 09:00
    
    Measurements of prompt photon production with the ATLAS detector 25m
    
    Speaker: Daniel Camarero Munoz (Universidad Autonoma de Madrid (ES))
    
    LOWX2021_promptphotons_DCM.pdf
  - 09:25
    
    Recent results on vector meson production, particle multiplicity spectra and particle correlations at HERA 25m
    
    Speaker: Marta Ruspa (Universita e INFN Torino (IT))
    
    lowx21_ruspa.pdf
  - 09:50
    
    Recent ALICE results on vector meson photoproduction 25m
    
    Speaker: Simone Ragoni (University of Birmingham (GB))
    
    LowX.pdf
  - 10:15
    
    Gluon-gluon fusion for production of light isoscalar mesons (remote) 20m
    
    Speaker: Antoni Szczurek (Institute of Nuclear Physics)
  - 10:35
    
    Single and double phi production at the LHC: the role of odderon exchange (remote) 20m
    
    Speaker: Piotr Lebiedowicz (Institute of Nuclear Physics PAN)
    
    Low-x_2021_Lebiedowicz.pdf
- 10:55 → 11:20
  
  Coffee break 25m
- 11:20 → 12:55
  Vector meson session II
  - 11:20
    
    Semiexclusive dilepton production in proton-proton collisions with one forward proton measurement at the LHC (remote) 20m
    
    Speakers: Barbara Linek, Marta Luszczak (University of Rzeszow)
    
    Low-X 2021 - Barbara Linek.pdf
  - 11:40
    
    Inclusive Higgs-Jet production in high-energy hadron collisions (remote) 20m
    
    Speaker: Mohammed Maher Abdelrahim Mohammed (University of Calabria and INFN - Gruppo collegato di Cosenza)
    
    lox-x_2021_Mohammed.pdf
  - 12:00
    
    Rho photoproduction in ALICE (remote) 25m
    
    Speaker: Spencer Robert Klein (Lawrence Berkeley National Lab. (US))
  - 12:25
    
    Discussion: Vector mesons 30m
    
    Speakers: Georgios Krintiras (The University of Kansas (US)), Irais Bautista Guzman (Centro de Investigación y de Estudios Avanzados del IPN (MX))
- 12:55 → 13:05
  
  Workshop Conclusion 10m
  
  Speakers: Angelo Scribano Memoria (Universita & INFN Pisa (IT)), Christophe Royon (The University of Kansas (US))
- 13:05 → 13:10
  
  Departure 5m

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Low-x 2021