[Halld-physics] DNP Abstract

[wmcginle at jlab.org]

Hello,

I plan to submit an abstract for the DNP meeting, if you have any comments
please send them to me.

Thank you,
Will McGinley

Title: Exclusive eta and eta’ photoproduction and beam asymmetries at GlueX

Abstract: The GlueX experiment is a photopoduction experiment located at
Thomas Jefferson National Lab in Newport News, Virginia. GlueX is capable
of making beam asymmetry ($\Sigma$) measurements using a tagged,
linearly-polarized 9 GeV photon beam incident on a hydrogen target.
Measurements of the beam asymmetry for the exclusive reactions, $\gamma
p\rightarrow\eta p$ and $\gamma p\rightarrow\eta'p$, will provide insight
into the meson production mechanisms. GlueX measurements are the first
beam asymmetry results for the and $\eta$ in $\eta'$ this energy range and
are expected to further constrain Regge theory models for photoproduced
pseudoscalar mesons. This talk will present results of the photon beam
asymmetries as a function of the Mandelstam variable, t , for multiple
$\eta$ decay modes and the $\eta'\rightarrow\pi^+\pi^-\eta$ decay mode.