International Workshop on Hadron Structure and Spectroscopy 2023

25 Jun 2023, 18:00 → 28 Jun 2023, 21:00 Europe/Prague

Czech Technical University, Main lecture hall (Prague, Czechia)

Jan Matousek (Charles University (Prague, CZ), CERN), Kamil Augsten (Czech Technical University (CZ))

The three day long "International Workshop on Hadron Structure and Spectroscopy 2023" (IWHSS-2023) is taking place in Prague from June 26th to 28th in fully in-person mode. It is going to be followed by the COMPASS Collaboration meeting on June 29th and 30th.

IWHSS-2023 is the 19th workshop in the series of annual workshops on Hadron Structure and Spectroscopy, with most recent editions being the IWHSS-2022 (CERN, celebration of 25 years since COMPASS approval and 20 years since the first data taking), IWHSS-2020 (remote due to COVID-19), IWHSS-2019 (Aveiro, Portugal) and IWHSS-2018 (Bonn, Germany). 

The scientific programme of the workshop will be traditionally focused on the following topics:

• Spin and 3D structure of the nucleon
• TMDs, GPDs and GTMDs,
• Fragmentation functions,
• Fixed target and collider experiments,
• Meson structure and spectroscopy,
• Search for exotic states,
• Future measurements and experimental proposals

The workshop is organized by the Czech group at COMPASS, representing the Faculty on Nuclear Sciences and Physical Engineering of the Czech Technical University and the Faculty of Mathematics and Physics of the Charles University.

Registration fees:

• Early regular: EUR 170 (or CZK 4060)
• Early student: EUR 120 (or CZK 2830)
• Late regular: EUR 210 (or CZK 5010)
• Late student: EUR 160 (or CZK 3820)

IWHSS23poster.pdf

IWHSS23poster.png

Sunday, 25 June

19:00 → 21:00 Social programme: Welcome drink and registration

Convener: Jan Matousek (Charles University (CZ))

Monday, 26 June

08:45 → 09:00 Registration

09:00 → 11:05 Session: Opening

Convener: Jan Matousek (Charles University (CZ))

09:00 Welcome

Speakers: Jan Matousek (Charles University (CZ)), Mr Kamil Augsten (Czech Technical University (CZ))

Matousek_20230626.pdf

09:20 Hadron spectroscopy today

Speaker: Nils Huesken (Johannes Gutenberg U. Mainz, Germany)

had_spec_today.pdf

09:55 TMD structure of hadrons: status and prospects

Speaker: Cristian Pisano

IWHSS2023-cristian-pisano.pdf

10:30 Femtography of unpolarized protons and pions at N3LL accuracy

Speaker: Marco Radici

radici2.pdf

11:05 → 11:30 Coffee

11:30 → 12:45 Session: News from experiments

Convener: Fulvio Tessarotto (Universita e INFN Trieste (IT))

11:30 Highlights from STAR experiment

Speaker: Jinlong Zhang (Shandong University)

STARhighlights_JLZhang.pdf

11:55 Highlights from PHENIX experiment

Speaker: Balazs Ujvari (University of Debrecen (HU))

IWHSS2023UB.pdf

12:20 AMBER Phase I: Establishing a new QCD facility at the M2 secondary beam line of CERN’s SPS

Speaker: Mr Thomas Poeschl (Technische Universitaet Muenchen (DE))

Poeschl_IWHSS_AMBER_PHASE1.pdf

14:35 → 16:20 Session: Future experiments

Convener: Benjamin Moritz Veit (Johannes Gutenberg Universitaet Mainz (DE))

14:35 Jefferson Lab: a look into the Future

Speaker: Dr Patrizia Rossi (Jefferson Lab/LNF-INFN)

Rossi_IWHSS.pdf

15:05 sPHENIX Cold-QCD Program

Speaker: Dr Genki Nukazuka (RIKEN BNL Research Center)

IWHSS2023_sPHENIX_Genki_v2.pdf

15:30 The LHCspin project

The goal of LHCspin is to develop, in the next few years, innovative solutions and cutting-edge technologies to access spin physics in high-energy polarized fixed-target collisions, by exploring a unique kinematic regime given by the LHC beam and by exploiting new probes. This ambitious task poses its basis on the recent installation of SMOG2, the unpolarized gas target in front of the LHCb spectrometer. Specifically, the unpolarized target, already itself a unique project, will allow to carefully study the dynamics of the beam-target system, and clarify the potentiality of the entire system, as the basis for an innovative physics program at the LHC. The forward geometry of the LHCb spectrometer (2<𝜂<5) is perfectly suited for the reconstruction of particles produced in fixed-target collisions. This configuration, with center-of-mass energies ranging from 115 GeV in pp interactions to 72 GeV in collisions with nuclear beams, allows to cover a wide backward rapidity region, including the poorly explored high x-Bjorken and high x-Feynman regimes. With the instrumentation of the proposed target system, LHCb will become the first experiment delivering simultaneously unpolarized beam-beam collisions at √s=14 TeV and both polarized and unpolarized beam-target collisions. The status of the project is presented along with a selection of physics opportunities.

Speaker: Marco Santimaria (INFN e Laboratori Nazionali di Frascati (IT))

santimaria_lhcspin.pdf

15:55 AMBER Phase II: QCD physics beyond colliders

Speaker: Bjoern Seitz

IWHSS AMBER-II BSeitz.pdf

IWHSS AMBER-II BSeitz.pdf

16:20 → 16:45 Coffee

16:45 → 18:00 Session: TMD hadron structure

Convener: Dr Bakur Parsamyan (AANL, Turin section of INFN and CERN)

16:45 Highlights from the JAM collaboration

Speaker: Nobuo Sato

IWHSS.pdf

17:10 Lattice QCD calculations of hadron structure

Speaker: Joseph Karpie (Jefferson Lab)

Karpie_iwss_2023.pdf

17:35 Drell-Yan cross section measurements at SeaQuest and SpinQuest

Speaker: Kei Nagai (Los Alamos National Laboratory)

IWHSS.pdf

19:00 → 22:00 Social programme: Dinner

Tuesday, 27 June

09:00 → 10:40 Session: TMDs: Theory

Convener: Aram Kotzinian (A.Alikhanyan National Science Laboratory (AM))

09:00 Di-hadron production and the transversity distribution of the nucleon

Speaker: Andreas Metz

IWHSS_2023_Dihadron.pdf

09:25 Extraction of Sivers and worm-gear-T distributions from SIDIS and Drell-Yan

Speaker: Alexey Vladimirov (Universidad Complutense de Madrid)

vladimirov.pdf

09:50 Probing gluon TMDs in back-to-back production of $J/\psi-\mathrm{jet}$ and $J/\psi-\gamma$ in eP collision

We present a calculation of the azimuthal asymmetries in back-to-back production of $J/\psi - \mathrm{jet}$ and $J/\psi-\gamma$ in eP collision. We use NRQCD to estimate the $J/\psi$ production, and assume TMD factorization for the back-to-back kinematics. We show that these asymmetries will be useful for probing the the gluon TMDs, like the linearly polarizaed gluon TMD, in unpolarized scattering, and gluon Sivers function, when the proton is transversely polarized. We give estimates of the upper bound of the asymmetries, as well as using different parametrizations of the gluon TMDs. We investigate the effect of TMD evolution on the asymmetry.

Speaker: Asmita Mukherjee (Indian Institute of Technology, Bombay, India)

IWHSS.pdf

10:15 Modeling polarised quark fragmentation in electron-positron annihilation

Speaker: Albi Kerbizi (Universita e INFN Trieste (IT))

Kerbizi_IWHSS2023.pdf

10:40 → 11:00 Coffee

11:00 → 12:40 Session: TMDs: Experiments

Convener: Wen-Chen Chang (Academia Sinica (TW))

11:00 Fragmentation functions from e+e- annihilation experiments

Speaker: Isabella Garzia

Praga_Garzia.pdf

11:30 CLAS12 SIDIS longitudinal target results

Speaker: harut avakian

avakian-2023-IWHSS-Jun27.pdf

avakian-2023-IWHSS-Jun27.ppt

12:00 SIDIS measurements at COMPASS

Speaker: Anna Martin (Trieste University and INFN (IT))

martin_iwhss23.pdf

14:30 → 15:45 Session: GPDs: Experiments

Convener: Fabienne Kunne (Université Paris-Saclay (FR))

14:30 GPD measurements at JLab

Speaker: Dr Silvia Niccolai (CNRS)

IWHSS_niccolai.pdf

14:55 Exclusive measurements at LHC sensitive to GPDs

Speaker: Charlotte Van Hulse (Universidade de Santiago de Compostela (ES))

iwhss23_charlotte.pdf

15:20 Hard exclusive $\pi^0$ production at COMPASS

Speaker: Karolina Lavickova (Czech Technical University in Prague (CZ))

Lavickova_IWHSS23.pdf

15:45 → 16:15 Coffee

16:15 → 18:00 Session: GPDs: Theory

Convener: Nicole D'Hose (Université Paris-Saclay (FR))

16:15 Calculating GPDs in Lattice QCD: Recent developments

Recent advancements have facilitated the approximate computation of light-cone correlation functions in lattice QCD through the evaluation of their Euclidean counterparts. In this presentation, we will provide a brief overview of these significant developments that have direct implications for Generalized Parton Distributions (GPDs). Additionally, we will delve into our latest work, where we have developed a formalism aimed at enhancing the efficiency of lattice calculations for GPDs.

Speaker: Shohini Bhattacharya

IWHSS_2023_SB.pdf

16:45 Pion GPDs

Speaker: Jose Manuel Morgado Chávez (LSN/DPhN/Irfu CEA-Saclay)

SlidesIWHSS2023-JoseManuelMorgadoChavez.pdf

17:10 CFF and GPD extraction from multi-channel fits

Speaker: Marija Čuić

Prague23_Cuic.pdf

17:35 New techniques to access the x-dependence of GPDs

Speaker: Zhite Yu

IWHSS2023_SDHEP_ZhiteYu.pdf

Wednesday, 28 June

09:00 → 10:00 Session: Drell-Yan experiments

Convener: Martin Faessler (Ludwig Maximilians Universitat (DE))

09:00 Double $J/\psi$ production in pion-nucleon scattering at COMPASS

Speaker: Andrei Gridin (Joint Institute for Nuclear Research (RU))

Gridin_iwhss.pdf

09:25 Standard and $q_T$-weighted transverse spin asymmetries in COMPASS Drell-Yan data

Speaker: Malgorzata Rozalia Niemiec (University of Warsaw (PL))

fin_IWHSS_mniemiec.pdf

IWHSS_mniemiec.pdf

10:00 → 10:20 Coffee

10:20 → 12:30 Session: Hadron spectroscopy

Convener: Prof. Stephan Paul (Technische Universitaet Muenchen (DE))

10:20 Dynamics of $J/\psi$ photoproduction near threshold

The near threshold region of heavy quarkonium has received a lot of attention with possible applications to a wide breadth of physics. I will discuss the recent JPAC analysis of new Jefferson Lab data from the GlueX and Jpsi-007 experiments. I will discuss the still wide array of physics scenarios that may underpin the near threshold data including strong coupled channel effects to open charm states and the existence of hidden charm pentaquarks. I highlight the need to disentangle the competing dynamical processes especially as it relates to extracting meaningful quantities related to nucleon structure and or exotic hadrons.

Speaker: Daniel Winney (South China Normal U.)

winney_IWHSS2023.pdf

10:45 Hadron spectroscopy at BESIII

Speaker: Beijiang Liu

IWSS2023_BJLiu.pdf

11:10 Hadron spectroscopy at GlueX

Speaker: Dr Peter Hurck (University of Glasgow (GB))

talk_IWHSS_PH.pdf

11:40 Light-meson spectroscopy at COMPASS

Speaker: Philipp Haas (Technische Universitaet Muenchen (DE))

haas_iwhss2023.pdf

12:10 Hadron spectroscopy at LHCb

Speaker: Mr Zehua Xu (LPC Clermont CNRS/IN2P3 (FR))

IWHSS2023_Zehua_v1.pdf

14:00 → 15:15 Session: Inovative methods in data analysis

Convener: Jan Matousek (Charles University (CZ))

14:00 Machine learning for event reconstruction and particle identification at CLAS12

Speaker: Gagik Gavalian (Jefferson National Lab)

IWHSS-Prague-Gavalian-June-2023.pdf

14:25 Measurement of the spin transfer to Λ hyperons at CLAS12

Speaker: Matthew McEneaney

final_McEneaney_IWHSS23.pdf

McEneaney_IWHSS23.pdf

14:50 New SIDIS results from H1 using machine learning for unfolding

Speaker: Fernando Torales Acosta (Lawrence Berkeley National Lab)

Fernando TA LeptonJet Asymm IWHSS Talk.pdf

15:15 → 15:30 Coffee

15:30 → 17:30 Social programme: Excursions (see "Social programme" for more info)

18:00 → 21:00 Social programme: Farewell drink