Baryon Antibaryon Photoproduction using CLAS at Jefferson Lab
ORAL
Abstract
There is little known about the baryon antibaryon production mechanism. The following reactions were looked at, $\gamma$p$\rightarrow$pp$\bar{p}$, $\gamma$p$\rightarrow$pp$\pi^{-}\bar{n}$, and $\gamma$p$\rightarrow$p$\bar{p}\pi^{+}$n. For these reactions the photon energies that were selected were from 4.4-5.45 GeV. The data were from the g12 experiment taken with the CLAS detector using a liquid hydrogen target at Thomas Jefferson National Accelerator Facility. This experiment had high statistics, with a luminosity of 68 pb$^{-1}$. Features of the data such as invariant mass spectra, missing mass spectra, and angular distributions necessary for the analysis will be shown. In addition, a first observation of antineutrons in photoproduction in the missing mass spectra of $\gamma$p$\rightarrow$pp$\pi^{-}\bar{n}$ will also be shown.
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Authors
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William Phelps
Florida International University