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Workshop JPAC & JLab12

18–20 Feb 2026
Dipartimento di Fisica, Università di Genova
Europe/Rome timezone

Contribution List

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  1. 16. Greetings from the director
    18/02/2026, 14:00
  2. 26. Spectroscopy at CLAS and CLAS12
    Annalisa D'Angelo (Istituto Nazionale di Fisica Nucleare)
    18/02/2026, 14:10

    The study of baryonic excited states provides fundamental information on the internal structure of the nucleon and on the degrees of freedom that are relevant for QCD at low energies. N* are composite states and are sensitive to details of the how quarks are confined. Meson photo-and electro-production reactions have provided complementary information on light quark baryon spectroscopy for...

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  3. 7. Beam Spin Asymmetry Preliminary Studies on KΛ(1520) electroproduction at CLAS12
    Chiara Ammendola (Istituto Nazionale di Fisica Nucleare)
    18/02/2026, 14:40

    An experimental program has been approved at the Thomas Jefferson National Accelerator Facility to study exclusive (KY) electroproduction with CLAS12 in order to search for new excited baryon states in the mass range ($W \simeq 1.8-3.0\text{ GeV}$). Two dedicated data-taking campaigns were carried out in 2018 and 2024. Although the 2018 dataset has limited statistics, it demonstrated excellent...

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  4. 18. Extraction of polarization asymmetries in two pion photoproduction with circularly polarized beam
    Dr Alessandra Filippi (Istituto Nazionale di Fisica Nucleare sez. di Torino)
    18/02/2026, 15:10
  5. 10. Regge theory for pedestrians
    Andrzej Szczepanski
    18/02/2026, 16:10

    Regge theory for pedestrian

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  6. 5. Regge exchanges in high energy photoproduction processes
    Vanamali Shastry (CEEM, IU Bloomington)
    18/02/2026, 16:40

    I present the results from the amplitude analysis of the photoproduction of $\pi^{-}\Delta^{++}$. The GlueX data on the spin-density matrix elements of this process have been used to extract the phase relationship between the helicity amplitudes in a model independent way. Using the crossing relations and the principle of duality, the cross-channel residues and from them, the couplings for...

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  7. 19. AI applications to pion scattering
    Wyatt Smith (Indiana University)
    18/02/2026, 17:10
  8. 11. Elliptically Polarised PWA
    Derek Ian Glazier (University of Glasgow)
    19/02/2026, 09:30
  9. 2. 2 Pi production at Clas12
    Marco Filippini (Istituto Nazionale di Fisica Nucleare)
    19/02/2026, 10:00

    Analysis of 2 pions quasi-photoproduction at Clas12

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  10. 1. Moments of Angular Distribution of K+K- with CLAS12
    Charlie Velasquez (University of York)
    19/02/2026, 10:30

    Since the prediction of the meson in 1935, facilities and institutions worldwide have contributed to the discovery of over 200 distinct types, including the pions, kaons, and J/Ψ. Meson spectroscopy involves understanding the properties of the mesons, allowing for the classification of this vast family of hadrons to be improved, which is particularly important for the discovery of new or...

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  11. 12. SDME and moments in electroproduction
    Dillon Leahy (University of Glasgow)
    19/02/2026, 11:30
  12. 14. Discussion
    19/02/2026, 12:00
  13. 3. Diffusion model for unfolding CLAS detector
    Giorgio Foti (Università di Messina & INFN Catania)
    19/02/2026, 14:00

    We introduce a novel strategy to unfold detector distortions in CLAS two-pion photoproduction measurements using a diffusion model. By training the model on simulated events, we enable it to recover the "true" kinematic distributions from reconstructed data, from which moment distributions can then be extracted. This approach improves the learning convergence rate and flexibility across...

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  14. 24. Acceptance corrections with AI
    Marco Battaglieri (Istituto Nazionale di Fisica Nucleare)
    19/02/2026, 14:20
  15. 25. Discussion
    19/02/2026, 14:40
  16. 6. Next steps for J/psi photoproduction
    Daniel Winney (ICN-UNAM)
    19/02/2026, 15:10

    Since the JLab measurements of J/psi photoproduction near threshold in 2023, interest in the reaction has continued to increase with a plethora of new theoretical works attempting to interpret the dynamics underling the data. In light of JPAC's effort to model-independently disentangle the physics at play resulting inconclusive with the present statistics, I briefly examine possible avenues to...

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  17. 13. Spectroscopy at LHCb
    Elisabetta Spadaro Norella (Istituto Nazionale di Fisica Nucleare), Elisabetta Spadaro Norella (University of Genoa)
    19/02/2026, 16:10
  18. 8. The μCLAS12 Project
    Mariangela Bondi (Istituto Nazionale di Fisica Nucleare)
    19/02/2026, 16:40

    The μCLAS12 Project

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  19. 28. A Deuterium Target at μCLAS12
    Richard Tyson (University of Glasgow), Richard Tyson (University of Glasgow)
    19/02/2026, 16:55
  20. 9. Spectroscopy opportunities at μCLAS12 Project
    Dr Alessandro Pilloni (UniME & INFN CT)
    19/02/2026, 17:10

    Spectroscopy opportunities at μCLAS12 Project

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  21. 15. Discussion
    19/02/2026, 17:25
  22. 20. Spectroscopy of Light and Heavy Baryons
    Elena Santopinto (Istituto Nazionale di Fisica Nucleare)
    20/02/2026, 09:30
  23. 4. Finite Energy Sum Rules in Pi P --> Pi Eta(') P
    Vincent Mathieu
    20/02/2026, 10:00

    In this talk, I will review the sum rules for 3 particle final state reactions and their recent application to the COMPASS data in Pi P --> Pi Eta(') P.

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  24. 23. Reggeon exchange model for the $\pi^+\pi^-$ photoproduction - status and outlook
    Łukasz Bibrzycki (AGH University of Krakow)
    20/02/2026, 10:30

    A model of the $\pi^+\pi^-$ photoproduction developed by JPAC will be discussed. The model's application for the description of moments of angular measured by CLAS collaboration at JLAB will be presented. Possible applications as well as extensions to other di-pseudoscalar channels (like $K^+K^-$) will be outlined.

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  25. 30. Pion Exchange
    Gloria Montana (University of Barcelona, Institute of Cosmos Sciences (ICCUB))
    20/02/2026, 11:30
  26. 21. Incorporating the RICH into CLAS12 Analyses
    Simone Vallarino (Istituto Nazionale di Fisica Nucleare)
    20/02/2026, 12:00
  27. 22. Discussion
    20/02/2026, 12:30