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Near-threshold J/Psi photoproduction measurement from Hall-C J/Psi-007 experiment

ORAL

Abstract

J/Psi-007 experiment (E12-16-007) was conducted at Hall-C, Jefferson Lab to measure the near threshold region 2-D differential J/Psi photo production cross section as a function of photon energy E$_gamma$ and mandelstam variable t (momentum transfer from initial photon to the produced JPsi). The experiment utilized a high intensity real photon beam produced by incidence of a 10.6 GeV incident electron beam on a copper radiator situated upstream of a hydrogen target. The produced e$^-$e$^+$ ($\mu^+\mu^-$) pair from the decay of J/Psi was detected using two arm spectrometers in Hall C: the HMS and the SHMS. The scanned photon energy range E$_{\gamma}$ and momentum transfer |t|, are between 9.1 and 10.6 GeV and up to 4.5 GeV^2, respectively. New results from the muons decay analysis of the measured 2-D J/Psi photo production cross section will be presented.

Presenters

  • Shivangi Prasad

    Argonne National Laboratory

Authors

  • Shivangi Prasad

    Argonne National Laboratory