[Halld-physics] Abstract for SESAPS 2017

[Sean Dobbs]

Dear all,

I'm planning to submit this abstract for an invited talk at SESAPS.  Please
let me know if there is any feedback.

Regards,
Sean


Recent Results from the GlueX Experiment

Hybrid mesons are composed of a quark-antiquark pair bound by an excited
gluonic field.  The study of such states will provide valuable information
on contribution of gluonic degrees of freedom in the confinement region of
QCD.  Although a spectrum of hybrid meson states has been long predicted,
there is experimental evidence for only a few hybrids.  The GlueX
experiment at Jefferson Lab combines a spectrometer with nearly full
acceptance for charged and neutral particles and a liquid hydrogen target
with a tagged photon beam whose flux and linear polarization peak at 9
GeV.  After a commissioning run in 2016, a multi-year data taking campaign
began in Spring 2017 with the intent to study the spectrum of light mesons
and determine the spectrum of hybrid mesons.  First physics results from
the existing data will be shown, including beam asymmetries and charmonium
production near threshold, and future plans will be discussed.
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