Space-like and time-like electromagnetic baryonic transitions

Europe/Paris
Trento

Trento

Andrey Sarantsev (University of Bonn and Gatchina), Beatrice Ramstein (Institut de Physique Nucleaire d'Orsay), Philip Cole (Idaho State University, USA)
Description

ECT* workshop

Space like and Time like electromagnetic Baryonic transitions

8-12 May 2017 Trento

 

 

The study of electromagnetic transitions opens a window into the very nature of the strong interaction. And, indeed, such a study of how a ground-state nucleon transitions to an excited state, over a broad range of q2, will provide keen insight into the evolution of how dynamically-generated masses emerge from the asymptotically-free, nearly massless quarks of perturbative QCD as well as provide information on the ancillary effects from the meson-baryon cloud. The space-like (q2<0) region has been explored more intensively, particularly at JLab, but efforts have also begun in studying the time-like (q2>0) region at GSI. We are living in exciting times whereby near-future prospects exist in extracting high-quality data in both the space-like and time-like regimes (JLab12 and FAIR, for example). Holding the proposed meeting will bring together several disparate experimental and theoretical communities and thereby help in making the very first steps towards a much needed consistent description spanning these two kinematical regimes in q2.

The discussions will further include photoproduction measurements (ELSA, JLab, LEPS, and MAMI), wherein the q2=0 point anchors the connection between space-like and time-like regions and meson-beam data (GSI, FAIR, and J-PARC) and amply complements the requisite information for baryon spectroscopy. Finally, studies of in-medium vector meson spectral function modifications, which are related to the electromagnetic transitions in the time-like region will also be addressed.

photos
    • 9:00 AM 10:00 AM
      introduction
      Convener: Beatrice Ramstein (Institut de Physique Nucleaire d'Orsay)
      • 9:00 AM
        registration 30m
      • 9:30 AM
        Welcome and Overview 15m
        Speaker: Prof. Jochen Wambach (ECT* and TU Darmstadt)
        Transparents
      • 9:45 AM
        introduction 15m
        Speaker: Beatrice Ramstein (Institut de Physique Nucleaire d'Orsay)
        Transparents
    • 10:00 AM 10:30 AM
      experimental studies of proton and neutron transitions in the space-like region
      • 10:00 AM
        Nucleon Resonance Electroexcitations off Free and Quasi-Free Nucleons 30m
        Speaker: Ralf Gothe (university of South Carolina)
        Transparents
    • 10:30 AM 11:00 AM
      Studies of time-like electromagnetic transitions
      • 10:30 AM
        Studying Time like electromagnetic transitions at low q2 in proton and pion induced reactions with the HADES experiment 30m
        Speaker: Piotr Salabura
        Transparents
    • 11:00 AM 11:30 AM
      coffee break 30m
    • 11:30 AM 12:00 PM
      Baryon spectroscopy from photoproduction and meson beam experiments
      • 11:30 AM
        Investigation of Baryon Excitations with the BGO-OD Experiment at ELSA. 30m
        Speaker: Hartmut schmieden
        Transparents
    • 12:00 PM 12:30 PM
      Theoretical work for baryon spectroscopy
      • 12:00 PM
        Test of quark models in photo- and electroproduction 30m
        Speaker: Eberhart Klempt (University of Bonn)
        Transparents
    • 12:30 PM 2:05 PM
      Lunch 1h 35m
    • 2:05 PM 2:35 PM
      Theoretical work for baryon spectroscopy
      • 2:05 PM
        Imaging Chiral Symmetry Breaking through Dyson Schwinger Equations. 30m
        Speaker: Daniele Binosi (ECT* Trento)
        Transparents
    • 2:35 PM 3:05 PM
      Unified description of space-like and time-like transitions:
      • 2:35 PM
        The role of the pion electromagnetic form factor in electromagnetic de-excitations of the Delta(1232) and the N*(1520) 30m
        Speaker: Pena Teresa (IST Lisbon)
        Transparents
    • 3:05 PM 3:35 PM
      Baryon spectroscopy from photoproduction and meson beam experiments
      • 3:05 PM
        Baryon spectroscopy at A2-MAMI 30m
        Speaker: Susanna Costanza (University of Pavia)
        Transparents
    • 3:35 PM 4:05 PM
      coffee break 30m
    • 4:05 PM 5:05 PM
      Theoretical approaches for baryon transition form factors in the space-like region
      • 4:05 PM
        SU(2)CS and SU(2NF) hidden symmetries 30m
        Speaker: Leonid Glozman (University of Graz)
        Transparents
      • 4:35 PM
        Nucleon axial form factor at large momentum transfers 30m
        Speaker: Vladimir Braun (University of Regensburg)
        Transparents
    • 5:05 PM 6:05 PM
      discussion 1h
    • 9:00 AM 9:30 AM
      Vector mesons in medium and the connection with electromagnetic structure of time-like electromagnetic baryon transitions
      • 9:00 AM
        in-medium modifications of vector meson spectral function. 30m
        Speaker: Jochen Wambach (TU Darmstadt and ECT* Trento)
        Transparents
    • 9:30 AM 10:00 AM
      Baryon spectroscopy from photoproduction and meson beam experiments
      • 9:30 AM
        Recent results from the CBELSA/TAPS experiment 30m
        Speaker: Annika Thiel (University of Bonn)
        Transparents
    • 10:00 AM 10:30 AM
      Theoretical work for baryon spectroscopy
      • 10:00 AM
        Bonn-Gatchina partial wave analysis of the vector mesons production data 30m
        Speaker: Victor Nikonov (University of Bonn)
        Transparents
    • 10:30 AM 11:00 AM
      coffee break 30m
    • 11:00 AM 11:30 AM
      Unified description of space-like and time-like transitions:
      • 11:00 AM
        Hyperon transition form factors at low energies 30m
        Speaker: Stefan Leupold (Uppsala University)
        Slides
    • 11:30 AM 12:00 PM
      Studies of time-like electromagnetic transitions
      • 11:30 AM
        Nucleon and hyperon form factors with BES III and PANDA 30m
        Speaker: Karin Schönning (Uppsala University)
        Slides
    • 12:00 PM 2:00 PM
      Lunch 2h
    • 2:00 PM 3:00 PM
      Unified description of space-like and time-like transitions:
      • 2:00 PM
        Model independent approaches of Time Like electromagnetic transitions 30m
        Speaker: Andrey Sarantsev (Gatchina and University of Bonn)
        Transparents
      • 2:30 PM
        Polarization and dilepton anisotropy in pion–nucleon collisions 30m
        Speaker: Myklos Zetenyi (WRCP, Budapest and EMMI, Darmstadt)
        Transparents
    • 3:00 PM 3:30 PM
      Studies of time-like electromagnetic transitions
      • 3:00 PM
        experimental study of the pi-p->ne+e- reaction 30m
        Speaker: Federico scozzi (IPN Orsay and TU Darmstadt)
        Transparents
    • 3:30 PM 4:00 PM
      coffee break 30m
    • 4:00 PM 5:00 PM
      discussion connection TL-SL 1h
    • 9:00 AM 10:00 AM
      Theoretical approaches for baryon transition form factors in the space-like region
      • 9:00 AM
        Not all gauge invariances are equal: Why local gauge invariance is necessary for dynamic descriptions of photo- and electroproduction processes 30m
        Speaker: Helmut Haberzettl (The George Washington University)
        Transparents
      • 9:30 AM
        Baryon spectrum and (transition) form factors from QCD’s Faddeev equation 30m
        Speaker: Christian Fischer (University of Giessen)
        Transparents
    • 10:00 AM 10:30 AM
      Vector mesons in medium and the connection with electromagnetic structure of time-like electromagnetic baryon transitions
      • 10:00 AM
        Vector Mesons and Chiral Restoration in Hadronic Matter 30m
        Speaker: Ralf Rapp (Texas A&M University)
        Transparents
    • 10:30 AM 11:00 AM
      coffee break 30m
    • 11:00 AM 12:00 PM
      Baryon spectroscopy from photoproduction and meson beam experiments
      • 11:00 AM
        Hadron physics at LEPS/LEPS2 and BELLE 30m
        Speaker: Masayuki Niiyama (Kyoto University)
        Transparents
      • 11:30 AM
        Baryon Partial Wave Analysis with MAID 30m
        Speaker: Lothar Tiator (Institut für Kernphysik, Universität Mainz)
        Transparents
    • 12:00 PM 2:00 PM
      Lunch 2h
    • 2:00 PM 3:30 PM
      Theoretical work for baryon spectroscopy
      • 2:00 PM
        The ANL/Osaka coupled-channel approach for baryon spectroscopy 30m
        Speaker: Hiroyuki Kamano (KEK)
        Transparents
      • 2:30 PM
        SAID Analysis of Meson Photoproduction 30m
        Speaker: Igor Strakovsky (The George Washington University)
        Transparents
      • 3:00 PM
        Baryon-to-meson transition distribution amplitudes: formalism and experimental perspectives 30m
        Speaker: Kirill Semenov-Tyan-Shanskiy (PNPI, Gatchina)
        Transparents
    • 3:30 PM 4:00 PM
      coffee break 30m
    • 4:00 PM 5:00 PM
      discussion baryon spectroscopy 1h
    • 9:00 AM 10:30 AM
      Vector mesons in medium and the connection with electromagnetic structure of time-like electromagnetic baryon transitions
      • 9:00 AM
        Dilepton radiation from compressed baryonic matter 30m
        Speaker: Joachim Stroth (Goethe University Frankfurt)
        Transparents
      • 9:30 AM
        In Medium Vector-Meson Spectral Functions with the Functional Renormalization Group 30m
        Speaker: Ralf-Arno Tripolt (ECT* Trento)
        Transparents
      • 10:00 AM
        polarization in a thermal medium 30m
        Speaker: Bengt Friman (TU Darmstadt)
        Transparents
    • 10:30 AM 11:00 AM
      coffee break 30m
    • 11:00 AM 12:30 PM
      discussion: medium effects 1h 30m
      Transparents
    • 12:30 PM 2:30 PM
      Lunch 2h
    • 2:30 PM 3:30 PM
      experimental studies of proton and neutron transitions in the space-like region
      • 2:30 PM
        Search for Hybrid Baryons at CLAS12 30m
        Speaker: Annalisa D'Angelo (University of Rome)
        Transparents
      • 3:00 PM
        Single pion electroproduction off proton in the resonance region with CLAS at Jefferson Lab 30m
        Speaker: Kyungseon Joo
        Transparents
    • 3:30 PM 4:00 PM
      prospects for future studies:
      • 3:30 PM
        Analysis of Pion-induced Reactions for Baryon Spectroscopy 30m
        Speaker: Michael Döring (George Washington University)
        Transparents
    • 4:00 PM 4:30 PM
      coffee break 30m
    • 4:30 PM 6:30 PM
      prospects for future studies:
      • 4:30 PM
        Time-like hyperon formfactor measurements at HADES and PANDA 30m
        Speaker: James Ritman (F-Z Jüich)
        Transparents
    • 9:00 AM 10:00 AM
      prospects for future studies:
      • 9:00 AM
        Study of baryon excited states in high statistics (pi,2pi) reactions at J-PARC 30m
        Speaker: Hiroyuki Sako
        Transparents
      • 9:30 AM
        Exploring QCD phase diagram with dileptons 30m
        Speaker: Tetyana Galatyuk (TU Darmstadt)
        Transparents
    • 10:00 AM 10:30 AM
      coffee break 30m
    • 10:30 AM 11:30 AM
      prospects for future studies:
      • 10:30 AM
        The future and motivations for a meson beam facility 30m
        Speaker: William Briscoe (The George Washington University)
        Slides
      • 11:00 AM
        Future directions of space-like and time-like baryonic form factors 30m
        Speaker: Philip Cole (Idaho State University)
        Slides
    • 11:30 AM 12:30 PM
      discussion-conclusion 1h
    • 12:30 PM 2:30 PM
      Lunch 2h