Quarkonium Working Group Workshop

from Monday, 17 November 2025 (08:00) to Friday, 21 November 2025 (18:30)
CERN (500/1-001)

        : Sessions
    /     : Talks
        : Breaks
17 Nov 2025
18 Nov 2025
19 Nov 2025
20 Nov 2025
21 Nov 2025
AM
08:00
Registration (until 08:50)
08:00 Registration  
08:50
Welcome (until 09:00)
08:50 Welcome - Nora Brambilla (TUM)  
09:00
Spectroscopy 1.1 - Mikhail Mikhasenko (until 10:40)
09:00 Energy scan results from Belle and Belle II - Dmytro Meleshko (Giessen U.)  
09:20 Exotic mesons in B decays at LHCb - Salil Joshi (Warsaw-NCBJ)  
09:40 Pentaquark states at LHCb - Mengzhen Wang (CERN)  
10:00 Tetraquarks and Pentaquarks in BOEFT - Abhishek Mohapatra (TUM)  
10:20 Exotic hidden-heavy hadrons and where to find them - Roberto Bruschini (Ohio State U.)  
10:40 --- Coffee break ---
11:10
Spectroscopy 1.2 - Nora Brambilla (until 12:50)
11:10 Spectroscopy results from LHCb - Ilya Segal (Bochum U.)  
11:30 Tetraquarks in the Born-Oppenheimer approximation - Antonio Davide Polosa (Sapienza University of Rome)  
11:50 Quark Mass dependence of doubly heavy tetraquark binding - Anthony Sebastian Francis (National Yang Ming Chiao Tung University)  
12:10 Hidden-Heavy pentaquarks and where to find them - Eric Braaten (Ohio State U.)  
12:30 Open flavor threshold effects on quarkonium spectrum in BOEFT - Tommaso Scirpa (TUM)  
09:00
Spectroscopy/Decay 2.1 - Antonio Vairo (until 10:45)
09:00 Decay of heavy hadrons at LHCB and CMS - Tong Xingyu (Peking University)  
09:25 Charming case of X(3872) and $\chi_{c1}$(2P) - Fulvia De Fazio (INFN Bari)  
09:45 Precise determination of the properties of X(3872) and of its isovector partner $W_{c1}$ - Teng Ji (Bonn U.)  
10:05 The internal structure of Tcc(3875) and X(3872) from their light-quark mass dependence - Vadim Baru (Ruhr University Bochum)  
10:25 Low-lying Doubly Heavy Baryons and Associated Tetraquark Systems - Estia Eichten (FNAL)  
10:45 --- Coffee break ---
11:15
Spectroscopy/Decay 2.2 - Roman Mizuk (until 13:15)
11:15 $\chi_{cJ}$ decays at BESIII - Marco Scodeggio (INFN Ferrara)  
11:35 $h_c$ decays at BESIII - Liang Yan (Fudan U.)  
11:55 Radiative transitions of P-wave quarkonia in lattice QCD - Damir Becirevic (LPT, Orsay)  
12:15 J/$\psi$ -> $\gamma$ $\eta_c$ and $\eta_c$ -> $\gamma$ $\gamma$ - Magnus Schaaf (TUM)  
12:35 P-wave charmonium leptonic widths - Jichen Pan (Peking U., CHEP)  
12:55 P-wave quarkonium form factors - Melih Ozcelik (IJCLab, Orsay)  
09:00
Production + New Opportunities 3.1 - Yan-Qing Ma (until 10:40)
09:00 Threshold Resummation in Quarkonium Fragmentation Functions - Hee Sok Chung (Gangneung-Wonju National University)  
09:20 Hadronic heavy quarkonium production in QCD factorization approach - Kazuhiro Watanabe (Tohoku University)  
09:40 How well does nonrelativistic QCD factorization work at next-to-leading order? - Xiangpeng Wang (Central China Normal University)  
10:00 CMS-Production Measurement of the polarizations of prompt and non-prompt $J/\psi$ and $\psi$(2S) mesons produced in pp collisions at $\sqrt s$ = 13 TeV - Carlos Lourenco (CERN)  
10:20 ALICE-Production $J/\psi$ - hadron correlation in pp collisions at 13 TeV - Shreyasi Acharaya (INFN Bari)  
10:40 --- Coffee break ---
11:10
Production 3.2 - Mathias Butenschoen (until 12:50)
11:10 High-Energy resummation effects in heavy quarkonium photoproduction - Dr Maxim Nefedov (Ben Gurion University)  
11:30 The importance of the soft scale for $J/\psi$ production in the TMD framework - Marston Copeland (Duke U.)  
11:50 Shedding Light on Hadronization by Quarkonium Energy Correlator - YanQing Ma (Peking U)  
12:10 Next-to-leading-order QCD corrections to double prompt $J/\psi$ hadroproduction - Xiaobo Jin (Beijing University of Chemical Technology)  
12:30 Inclusive photoproduction of vector quarkonium in ultra-peripheral collisions at the LHC - Jean-Philippe Lansberg (Université Paris-Saclay (FR))  
09:00
InMedia/Standard Model 4.1 - Alexander Bondar (until 10:40)
09:00 Recent STAR results on quarkonium production - Jakub Ceska (Czech Technical U.)  
09:20 Recent quarkonium results from fixed target at LHCb SMOG - Qiuchan Lu (Palaiseau-LLR)  
09:40 Two-loop non-annihilation Hamiltonian for quarkonium - Prof. Yukinari Sumino (Tohoku University)  
10:00 $\alpha_s$ from MRS potential - Andreas Kronfeld (IAS@TUM)  
10:20 Tetraquarks and other bound states in resummed perturbation theory - Benoît Assi (Cincinnati U.)  
10:40 --- Coffee break ---
11:10
Standard Model 4.2 - Andreas Kronfeld Yukinari Sumino (until 13:30)
11:10 Improved Wilson loops from machine learning - Julian Mayer-Steudte (TUM)  
11:30 Gluelump masses - Antonio Pineda (UAB/IFAE)  
11:50 $t \bar{t}$ cross section enhancements - Laurids Jeppe (Deutsches Elektronen-Synchrotron (DE))  
12:10 Updated predictions for toponium production at the LHC - Maria Vittoria Garzelli (Hamburg University (DE))  
12:30 Monte Carlo simulation of toponium - Benjamin Fuks (LPTHE / Sorbonne Université)  
12:50 Perturbative vs. bound-state effects in toponium - Paolo Nason (Milan Bicocca U.)  
13:10 Threshold effects in $t \bar{t}$ production with ATLAS - Yoav Afik (University of Chicago (US))  
08:40
InMedia 5.1 - Enrico Scomparin (until 10:50)
08:40 EPIC - Michael Murray (The University of Kansas (US))  
09:00 Toward lattice QCD calculation of quarkonium transport coefficients - Viljami Leino (Southern Denmark U.)  
09:20 NLO perturbative calculation of quarkonium EE and BB correlator and $\kappa$ and $\gamma$ at NLO - Panayiotis Panayiotou (Technical University of Munich)  
09:40 Quarkonium production in proton proton and nuclear collisions at LHCb - Lidia Carcedo Salgado (Universidade de Santiago de Compostela)  
10:10 PHENIX results and sPHENIX perspectives on quarkonium production - Hugo Pereira Da Costa (LANL)  
10:30 Bottomonium thermalization and master equations for quarkonium evolution - Tom Magorsch (TUM)  
10:50 --- Coffee break ---
11:20
InMedia/Automated Calculations 5.2 - Hua-Sheng Shao (until 13:15)
11:20 Hefty overview - Ramona Vogt (LLNL and UC Davis)  
11:40 In-medium spin transport of heavy quarkonium - Shuo Fang (TUM)  
12:00 Applications of AmpRed to Heavy Quarkonium Calculations - Wen Chen (South China Normal University)  
12:25 Automated Event Generation for Quarkonium and Leptonium Production in MadGraph5_aMC@NLO - Lukas Simon (LPTHE Paris)  
12:45 Central Exclusive Quarkonium Production in STARlight - Minjung Kim (UC Berkeley)  
PM
12:50
Lunch break (until 14:00)
14:00
Spectroscopy 1.3 - Joan Soto (until 15:25)
14:00 Flavor mixing in charmonium and light mesons - Francesco Giacomo Knechtli (Bergische Universitaet Wuppertal (DE))  
14:20 Spin dependent potentials for hybrids - Paul Pütz (TUM)  
14:40 Tetraquarks on the lattice - Padmanath Madanagopalan (IMSc Chennai)  
15:00 $e^+$ $e^-$ annihilation into hidden charm final states at BESIII - Zhentian Sun (Shandong U.)  
15:25 --- Coffee break ---
16:00
Spectroscopy 1.4 - Ryan Mitchell (until 18:25)
16:00 Spectroscopy results from Belle and Belle II - Roman Mizuk (IJCLab, Orsay)  
16:20 Spectroscopy of all-charm tetraquarks - Elena Santopinto (INFN (IT))  
16:40 Global Analysis of $e^+$ $e^-$ Cross Sections in the Charmonium Region - Nils Huesken (JGU Mainz)  
17:00 Hidden-heavy Hadrons in the Diabatic Born-Oppenheimer for QCD - Roberto Bruschini (Ohio State U.)  
17:20 Spectroscopy of over threshold states in bottomonium and charmonium sector - Fang-Zheng Peng (TUM)  
17:40 $e^+$ $e^-$ annihilation into light hadron and open charm final states at BESIII - Xiong Wang (Lanzhou University)  
18:05 Spectroscopy results from ATLAS - Yue Xu (Washington U.)  
13:15 --- Lunch break ---
14:30
Spectroscopy/Decay 2.3 - Changzheng Yuan (until 16:30)
14:30 The new QWG doc - Nora Brambilla (TUM)  
14:50 Dipion transitions between heavy hybrids and quarkonia - Joan Soto (Universitat de Barcelona)  
15:10 $\psi$(2S) decays at BESIII - Frederik Weidner (University of Münster)  
15:30 $\eta_c$(1S/2S) decays at BESIII - Hang Zhou (Helmholtz Institute Mainz)  
15:50 Measurements of Bc meson decays at LHCb - Wang Yuhao (Peking U.)  
16:10 Spectroscopy results from CMS - Shiyi Huang (Nanjing Normal U.)  
16:30 --- Coffee break ---
17:00
Spectroscopy/Decay 2.4 - Christoph Hanhart (until 19:00)
17:00 Nucleon-charmonium interaction from lattice QCD - Yan Lyu (RIKEN iTHEMS Wako)  
17:20 The J/ψJ/ψ-nucleon interaction mechanism: A theoretical study based on scattering length - Feng-Kun Guo (Beijing, Inst. Theor. Phys.)  
17:40 Y(3S) transitions to $\chi_{b1,2}$ (2P) at Babar - Antimo Palano (INFN Bari)  
18:00 Measurement of the relative phase between EM and strong decays of charmonium - Francesca De Mori (Turin U.)  
18:20 Measurement of cross sections of $e^+$ $e^-$ -> $K \bar{K}$ $\psi$(3686) in the energy range up to $\sqrt s = $ 4.951 GeV - Changzheng Yuan (Beijing, Inst. High Energy Phys.)  
18:40 Measurement of the $\Upsilon$ cross sections in pp collisions at 13.6 TeV - Yiyang Zhao (Tsinghua University (CN))  
12:50 --- Lunch break ---
14:00
Production 3.3 - Vato Kartvelishvili (until 16:40)
14:00 Prospects for quarkonium measurements in the NA60+/DiCE experiment - Roberta Arnaldi (Universita e INFN Torino (IT))  
14:20 Hadroproduction Data Support Tetraquark Hypothesis for X(3872) - Wai Kin Lai (South China Normal U.)  
14:40 Production of exotic states based on BOEFT - Simon Hibler (TUM)  
15:00 Impact of relativistic corrections to high-PT prompt-psi production at hadron colliders - Kate Lynch (University College Dublin (IE))  
15:20 About Charmonium Hadroproduction - CongFeng Qiao (Beijing, GUCAS)  
15:40 Round Table: Resummation techniques at large pT and low-x hadroproduction - Dr J. Qiu (zoom) Y. Q. Ma X. Wang Dr M. Nefedov K. Watanabe H. S. Chung Chair: M. Butenschoen  
16:40 --- Coffee break ---
17:10
Beyond Standard Model/Decay 3.4 - Eric Braaten (until 18:20)
17:10 Axion-like particles in radiative quarkonia decays - Stefano Rigolin (INFN Padova and Univ. of Padova)  
17:30 Search for new physics with charmonium decays at BESIII - Dayong Wang (Peking University (CN))  
17:55 LFV in $\chi_{b1}$ decays from Belle - Swagato Banerjee (Louisville U.)  
18:30
Reception (until 20:00)
21:30
Liasons and Convener's meeting - Geoffrey Bodwin Nora brambilla Antonio Vairo Vaia Papadimitriou Roberto Mussa (until 23:00) (500/1-001 - Main Auditorium)
13:30 --- Lunch break ---
14:30
InMedia 4.3 - Ramona Vogt (until 16:50)
14:30 Round Table: Toponium - Y. Afik M.V. Garzelli L. Jeppe Fuks B. Prof. Chair: Y. Sumino  
15:30 ALICE results on collective effets on quarkonium in Pb-Pb collisions - Luca Micheletti (INFN Torino)  
15:50 Recent results on charmonium production and suppression (including photoproduction) from ALICE - Minjung Kim (UC Berkeley)  
16:10 Quarkonium production in small collision systems at CMS - Soohwan Lee (Korea U.)  
16:30 Bottomonium width and masses from lattice NRQCD - Weiping Huang (Eötvös Loránd University (ELTE))  
16:50 --- Coffee break ---
17:20
InMedia 4.4 - Cesar Luiz Da Silva (until 19:00)
17:20 Unscreened potential and charmonium width from lattice QCD - Rasmus Larsen (Bielefeld University)  
17:40 Lattice calculation of chromo-electric and chromo-magnetic correlators in 2+1 flavor QCD and the heavy quark diffusion coefficient - Johannes Weber (Darmstadt U.)  
18:00 $J/\psi$ production in ultra-peripheral collisions - Farid Salazar (Temple U.)  
18:20 $J/\psi$ production in ICEM - Ramona Vogt (LLNL and UC Davis)  
18:40 Exclusive quarkonia production in ultraperipheral PbPb collisions in CMS - Cristian Baldenegro (MIT)  
13:15 --- Lunch break ---
14:15
Session 5.3 - Philip Ilten (until 16:25)
14:15 Quarkonium Parton Shower in Herwig7 - Aidin Masouminia (Durham U.)  
14:40 Simulations in Pythia8 - Naomi Cooke (Glasgow U.)  
15:00 Hybrids spin dependent and mixing potentials - Marc Wagner (Frankfurt U.)  
15:20 Electromagnetic form factors and structure of the $T_{bb}$ tetraquark - Sara Collins (Regensburg U.)  
15:40 Quarkonium and Exotics in the QCD at FAIR initiative - Frank Nerling (GSI)  
16:00 Status of the Super-tau charm factory and EicC - Yutie Liang (Institute of Modern Physics, CAS)  
16:25 --- Coffee break ---
16:55
New Opportunities 5.4 - Umberto Tamponi (until 17:15)
16:55 The LHCb Upgrade and its impact on quarkonium measurements - Mengzhen Wang (CERN)  
17:15
QWG 2025 closeout (until 17:35)