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8th Workshop of the APS Topical Group on Hadronic Physics

Apr 10 – 12, 2019
Denver, CO
US/Mountain timezone

Susan Schadmand

Session

JPAC

Apr 12, 2019, 8:30 AM
Denver, CO

Denver, CO

Sheraton Denver Downtown Hotel, 1550 Court Pl. lobby level of the Plaza building

Conveners

JPAC: I

  • Bill Briscoe (GWU)

JPAC: II

  • Adam Szczepaniak (Indiana Univeristy/JLab)

Presentation materials

There are no materials yet.

  1. 15. JPAC Overview
    Prof. Adam Szczepaniak (Indiana Univeristy/JLab)
    4/12/19, 8:30 AM
    invited talk
    I will discuss the history of JPAC, its mission and contributionx to amplitude analysis and hadron spectroscopy.
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  2. 142. Progress in analysis of single and double meson photoproduction
    Dr Vincent Mathieu (Complutense University of Madrid)
    4/12/19, 8:55 AM
    invited talk
    I'll review the recent developments in single and double meson photoproduction, including photoproduction of 1 and 2 pseudoscalar(s), and one vector meson.
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  3. 61. Towards an Analytical Description of Three Particle Scattering
    Mr Andrew Jackura (Indiana University)
    4/12/19, 9:20 AM
    invited talk
    Advances in Lattice QCD computations of the excited hadron spectrum require analytic representation of infinite volume three particle scattering amplitudes. We present a representation of the elastic three particle scattering amplitude consistent with the unitarity of the S-matrix. We investigate aspects of its analytic properties, specifically one-particle exchange effects and triangle singularities.
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  4. 29. Towards a combined analysis of inclusive/exclusive electroproduction
    Dr Astrid Hiller Blin (Johannes Gutenberg Universität Mainz)
    4/12/19, 9:45 AM
    invited talk
    The CLAS experiments have achieved major advances in the study of the $N^*$ region of the electroproduction spectrum. Data on electrocouplings of the many baryon resonances in the mass range up to 1.8 GeV showed consistency between the $N\pi$, $N\eta$ and $N\pi^+\pi^-$ channels. We present our theoretical studies of structure functions in view of the CLAS12 experiments planned in the near...
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  5. 103. New determination of the lightest hybrid meson candidate
    Mr Arkaitz Rodas (Universidad Complutense de Madrid)
    4/12/19, 10:30 AM
    invited talk
    In this talk I will review the recent analyses and other activities carried out by the JPAC collaboration. In particular, the phenomenological analysis of the $\eta^{(')} \pi$ partial waves measured at COMPASS. We fit the data using a coupled-channel amplitude based on first principles, determining in a robust way the existence of only one hybrid meson candidate $\pi_1$, corresponding to the...
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  6. 104. Analysis of three body decays
    Dr Miguel Albaladejo (JLab)
    4/12/19, 11:00 AM
    invited talk
    In this talk we will present the formalism of Khuri-Treiman equations and how this is useful for the analysis of three body decays. We will show how it works in different reactions, and discuss some of the necessary generalizations, such as the inclusion of coupled channels. We will also discuss future applications.
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  7. 93. Dispersive KT Equations for Three-Body Decays of Mesons with Higher Mass or Spin
    Mr Daniel Winney (Indiana Unversity Bloomington)
    4/12/19, 11:30 AM
    invited talk
    The Khuri-Treiman (KT) formalism has been used to great effect to describe the low-energy dynamics involved in relativistic three body decays. This dispersive framework relies on truncating the infinite sum of partial waves via the isobar decomposition and imposing unitarity on the three resulting subchannels. Because of this truncation, however, the dispersion equations resulting from...
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