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Positron Working Group Workshop

Mar 18 – 20, 2024
Science and Engineering Hall
US/Eastern timezone

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Session

PWG - 4

Mar 20, 2024, 9:00 AM
B1270 (Science and Engineering Hall)

B1270

Science and Engineering Hall

800 22nd St. NW Washington, DC 20052

Conveners

PWG - 4

  • Axel Schmidt (George Washington University)

Presentation materials

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  1. 28. This presentation is canceled
    Dipangkar Dutta (Mississippi State University)
    3/20/24, 9:00 AM

    Axial structure of the nucleon with positron capture at medium energies

    A medium energy polarized positron beam would enable the extraction of the axial form factor $G_A(Q^2)$ of the nucleon and its four-momentum transfer square ($Q^2$) dependence, using the weak capture reaction in deuterium ($ \vec{e^+} + {^2H} \rightarrow 2p + \bar{\nu}_{e}$). A polarized positron beam with beam energies...

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  2. 26. Exploring the partonic structure of $^4$He through exclusive processes with positrons
    Whitney Armstrong (Argonne National Laboratory)
    3/20/24, 9:30 AM
  3. 27. Two-Photon Exchange for semi-inclusive meson electroproduction
    Stinson Lee (George Washington University)
    3/20/24, 10:00 AM

    Semi-inclusive meson production is used to access transverse momentum dependent distributions (TMD) or partons in a nucleon. We investigate a role of two-photon exchange (TPE) for this process. Such calculations require a model of nucleon structure. At the first step, we perform separation of hard and soft photon exchange. Soft photon exchange is demonstrated to be model-independent due to a...

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  4. 29. Use of 160 GeV polarized $\mu^+$ and $\mu^-$ beams to study exclusive reactions at COMPASS
    Nicole d'Hose (IRFU, CEA, Université Paris-Saclay)
    3/20/24, 11:00 AM
  5. 30. Status of the MUon Scattering Experiment (MUSE) at PSI
    Michael Kohl (Hampton University)
    3/20/24, 11:30 AM

    Inspired by the proton radius puzzle, the MUon Scattering Experiment (MUSE) at Paul Scherrer Institute (PSI) in Villigen, Switzerland, was introduced to provide new information by simultaneously measuring elastic scattering of electrons and muons, as well as positrons and antimuons from a liquid hydrogen target. MUSE aims to provide precise cross sections with extractions of the electric form...

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