2nd Workshop on The Proton Mass; At the Heart of Most Visible Matter

chaired by Zein-Eddine Meziani (Temple University), Barbara Pasquini (Universita` di Pavia), Jianwei Qiu (Jefferson Lab), Marc Vanderhaeghen (Johannes Gutenberg-Universitaet Mainz)
from to (Europe/Rome)
at ECT* ( Conference room )
Strada delle Tabarelle, 286 I-38123 Villazzano TRENTO (TN)
Description

The subject of understanding the proton mass in terms of its constituents, as naive as it may sound, is of paramount importance to the field of Hadronic/Nuclear physics. The emergence of hadron masses from quarks and gluons is one of the most fascinating subjects in coherence physics and a cornerstone of QCD. In a tour de force, calculations of the baryon mass spectrum in lattice QCD has been successfully carried out, however developing the intuition of how the mass of each hadron emerges finds many pathways as noticed in the workshop held at Temple University in March of 2016 ( https://phys.cst.temple.edu/~meziani/proton-mass-workshop-2016/ ). How the mass of the proton emerges from its constituents is a natural and familiar question shared by many colleagues from other areas of physics where the mass of key systems is commonly described in terms of the mass of their constituents. While the mass of a hadron in QCD is an emergent phenomenon it is nevertheless important to cast our answer in terms of the energy/mass of the constituents in order to facilitate communication with the public in a familiar way. This is now crucial as the nuclear physics community in the U.S. and elsewhere embarks in the justification of building ever larger experimental facilities in the quest of understanding QCD and the structure of hadronic/nuclear matter from basic principles. In the U.S. such a facility is the electron ion collider (EIC) project which has been endorsed by the US nuclear physics community as the next construction project after the completion of FRIB. The science justification of this project will soon undergo an evaluation by a committee from the US National Academy of Science to cement its raison d'être. The quality and importance of the problems addressed by Nuclear physics, especially those involving a true understanding of the inner workings of QCD need to identify connections and pathways to others area of physics. The "mass of the proton" is one theme amenable to emphasize what remain to be understood in QCD as a worthwhile goal that can be appreciated by the wider physics community not just the practitioners of hadronic/nuclear physics.

Material:
Go to day
  • Monday, 3 April 2017
    • 09:30 - 11:00 Introductory session
      Convener: Prof. Marc Vanderhaeghen (University of Mainz)
      • 09:30 How to test the mass decomposition 45'
        Speaker: Dr. Jianwei Qiu (Jefferson Lab)
        Material: Slides pdf file
      • 10:15 Impacts of dynamical chiral symmetry breaking on hadron masses 45'
        Speaker: Dr. Ian Clöet (Argonne National Laboratory)
        Material: Slides pdf file
    • 11:00 - 11:20 Coffee break
    • 11:20 - 13:00 Introductory session
      Convener: Prof. Marc Vanderhaeghen (University of Mainz)
      • 11:20 The composition of the proton mass from light-front holography and superconformal algebra 45'
        Speaker: Dr. Stanley Brodsky (Stanford Linear Accelerator Center)
        Material: Slides pdf file
      • 12:05 Superconformal and supersymmetric constraints on hadron masses in light-front holographic QCD 45'
        Speaker: Prof. Guy de Teramond (University of Costa Rica)
        Material: Slides pdf file
      • 12:50 Discussion 10'
    • 13:00 - 14:30 Lunch Break
    • 14:30 - 16:30 Models of QCD and the mass of hadrons
      Convener: Prof. Robert Jaffe (MIT)
      • 14:30 Dynamical origin of the proton mass 40'
        Speaker: Prof. XiangDong Ji (Shanghai Jiao Tong University & University of Maryland)
        Material: Slides pdf file
      • 15:10 The dynamics of the gluon mass 40'
        Speaker: Dr. Joannis Papavassiliou (University of Valencia - IFIC)
        Material: Slides pdf file
      • 15:50 The QCD effective charge 40'
        Speaker: Dr. Daniele Binosi (ECT*)
        Material: Slides pdf file
    • 16:30 - 17:00 Coffee break ( Coffee room )
    • 17:00 - 18:00 Models of QCD and the mass of hadrons
      Convener: Prof. Robert Jaffe (MIT)
      • 17:00 Proton mass decomposition 40'
        Speaker: Dr. Yi-Bo Yang (University of Kentucky)
        Material: Slides pdf file
      • 17:40 Discussion 20'
  • Tuesday, 4 April 2017
    • 09:00 - 10:30 Hadron mass decomposition
      Convener: Prof. Barbara Pasquini (University of Pavia)
      • 09:00 Longitudinal and transverse spin-orbit correlations 45'
        Speaker: Prof. Cédric Lorcé (Ecole Polytechnique)
        Material: Slides pdf file
      • 09:45 Quark's angular momentum densities in position space 45'
        Speaker: Dr. Luca Mantovani (University of Pavia)
        Material: Slides powerpoint file
    • 10:30 - 11:00 Coffee break ( coffee room )
    • 11:00 - 13:00 Hadron mass decomposition
      Convener: Prof. Barbara Pasquini (University of Pavia)
      • 11:00 Proton without confinement 45'
        Speaker: Prof. Pietro Faccioli (University of Trento)
        Material: Slides pdf file
      • 11:45 Hadron charges and currents, and the contribution of excited states 45'
        Speaker: Dr. David Richards (Jefferson Lab)
        Material: Slides pdf file
      • 12:30 Discussion 30'
    • 13:00 - 14:30 Lunch break
    • 14:30 - 16:00 Threshold production of quarkonia J/Psi, phi
      Convener: Dr. Kawtar Hafidi (Argonne National Lab)
      • 14:30 Early results from the GlueX experiment 30'
        Speaker: Dr. Eugene Chudakov (Jefferson Lab)
        Material: Slides pdf file
      • 15:00 J/psi production at threshold at JLab (Hall A, B) 30'
        Speaker: Dr. Jian-Ping Chen (Jefferson Lab)
        Material: Slides pdf file
      • 15:30 Accessing the real part of the amplitudes of the forward scatterings of J/psi and phi mesons off the proton from photoproduction on proton around threshold 30'
        Speaker: Mr. Oleksii Gryniuk (University of Mainz)
        Material: Slides pdf file
    • 16:00 - 16:30 Cofee break ( Coffee room )
    • 16:30 - 18:00 Threshold production of quarkonia J/Psi, phi
      Convener: Dr. Kawtar Hafidi (Argonne National Lab)
      • 16:30 Charmed pentaquark calculationQuarkonium nucleus bound states with lattice 30'
        Speaker: Prof. Huey-Wen Lin (University of Michigan)
        Material: Slides pdf file
      • 17:00 Novel physics with tensor polarized targets 30'
        Speaker: Prof. Karl Slifer (University of New Hampshire)
        Material: Slides pdf file
      • 17:30 Discussion 30'
  • Wednesday, 5 April 2017
    • 09:00 - 10:50 Hadron mass decomposition
      Convener: Dr. Stanley Brodsky (Stanford Linear Accelerator Center)
      • 09:00 Perspective on the origin of hadron masses 45'
        Speaker: Dr. Craig Roberts (Argonne National Laboratory)
        Material: Slides powerpoint file
      • 09:45 Bound states in perturbation theory 45'
        Speaker: Prof. Paul Hoyer (University of Helsinki)
        Material: Slides pdf file
      • 10:30 Discussion 20'
    • 10:50 - 11:20 Coffee
    • 11:20 - 13:00 Hadron mass decomposition
      Convener: Dr. Stanley Brodsky (Stanford Linear Accelerator Center)
      • 11:20 QCD at the heart of the Standard Model 45'
        Speaker: Prof. Piet Mulders (Vrije University of Amesterdam)
        Material: Slides pdf file
      • 12:05 Nucleon quark content from lattice QCD 40'
        Speaker: Prof. Christian Hoelbling (University of Wuppertal)
        Material: Slides pdf file
      • 12:45 Discussion 15'
    • 13:00 - 14:30 Lunch break ( Cafeteria room )
    • 14:30 - 16:35 Hadron mass decomposition
      Convener: Dr. Jianwei Qiu (Jefferson Lab)
      • 14:30 Probing the origin of the proton mass with heavy quarkonium 45'
        Speaker: Prof. Dmitri Kharzeev (Stony Brook University & Brookhaven National Lab)
        Material: Slides pdf file
      • 15:15 Quark and spin content of the nucleon 45'
        Speaker: Prof. Constantia Alexandrou (University of Cyprus)
        Material: Slides pdf file
      • 16:00 Quark-Gluon Correlations in the Nucleon 35'
        Speaker: Prof. Matthias Burkardt (New Mexico State University)
        Material: Slides unknown type file pdf file
    • 16:35 - 17:00 Coffee break
    • 17:00 - 18:00 Hadron mass decomposition
      Convener: Dr. Jianwei Qiu (Jefferson Lab)
      • 17:00 Origin of nucleon mass in lattice QCD 40'
        Speaker: Prof. Keh-Fei Liu (University of Kentucky)
        Material: Slides powerpoint file
      • 17:40 Discussion 20'
  • Thursday, 6 April 2017
    • 09:00 - 10:50 Quark masses contribution
      Convener: Prof. Mauro Anselmino (University of Torino)
      • 09:00 Impact of proton structure on the proton-neutron mass difference and the (muonic-)hydrogen spectrum 45'
        Speaker: Dr. Vladimir Pascalutsa (University of Mainz)
        Material: Slides pdf file
      • 09:45 Sigma terms in ChEFT 45'
        Speaker: Dr. Jose Manuel Alarcon (Jefferson Lab)
        Material: Slides pdf file
      • 10:30 Discussion 20'
    • 10:50 - 11:20 Coffee break
    • 11:20 - 13:00 Quark masses contribution
      Convener: Prof. Mauro Anselmino (University of Torino)
      • 11:20 Lattice on quark masses 45'
        Speaker: Prof. Huey-Wen Lin (University of Michigan)
        Material: Slides pdf file
      • 12:05 Sigma-term determination from Roy-Steiner equations 40'
        Speaker: Dr. Jacobo de Elvira (University of Bern)
        Material: Slides pdf file
      • 12:45 Discussion 15'
    • 13:00 - 14:30 Lunch break ( Cafeteria room )
    • 14:30 - 16:00 Experiments:present-future
      Convener: Dr. Jian-Ping Chen (Jefferson Lab)
      • 14:30 J/psi and upsilon production at threshold at the EIC 35'
        Speaker: Prof. Abhay Deshpande (Stony Brook University)
        Material: Slides pdf file
      • 15:05 LHCb pentaquark 35'
        Speaker: TBD
      • 15:40 Discussion 20'
    • 16:00 - 16:30 Coffee break ( Coffee room )
    • 16:30 - 18:00 Experiments:present-future
      Convener: Dr. Jian-Ping Chen (Jefferson Lab)
      • 16:30 Deuteron Energy Momentum Tensor and Gluonometry 35'
        Speaker: Prof. Simonetta Liuti (University of Virginia)
      • 17:05 LHCb pentaquark search in direct photoproduction at JLab 40'
        Speaker: Dr. Sylvester Joosten (Temple University)
        Material: Slides pdf file
      • 17:45 Discussion 15'
  • Friday, 7 April 2017
    • 09:00 - 11:00 Conclusions
      Convener: Dr. Jianwei Qiu (Jefferson Lab)
      • 09:00 Theory Summary 45'
        Speakers: Prof. Barbara Pasquini (University of Pavia), Prof. Marc Vanderhaeghen (University of Mainz)
        Material: Slides pdf file
      • 09:45 Experiment Summary 45'
        Speaker: Prof. Zein-Eddine Meziani (Temple University)
        Material: Slides pdf file
      • 10:30 Discussion 30'
    • 11:00 - 11:30 Coffee break
    • 11:30 - 13:00 Conclusions
      Convener: Dr. Jianwei Qiu (Jefferson Lab)
      • 11:30 Discussion & Plans for a white paper 20'
        Material: Slides powerpoint file
    • 13:00 - 14:30 Lunch break