Speaker
Dr
Morgan Murray
(University of Glasgow)
Description
The study of Generalised Parton Distributions (GPDs) promises to provide new
knowledge of the structure of the nucleon, including, most notably, access to
the total angular momentum of quarks within the nucleon. It can be difficult
to ascertain new information on the distributions, but amongst all the
exclusive processes that can provide access, Deeply Virtual Compton
Scattering (DVCS) is relatively simple and experimentally accessible. The
HERMES collaboration has the most diverse results pertaining to DVCS of any
experiment, extracting asymmetries in the azimuthal distribution of produced
photons according to both beam helicity and charge and target spin state. In
this talk, we provide an overview of the HERMES DVCS result catalogue and
explain how the results are used to improve constraints on the underlying
GPDs. An indication of the progress in extracting DVCS results using truly
exclusive measurements at HERMES using the Recoil Detector will also be
provided.
Primary author
Dr
Morgan Murray
(University of Glasgow)
