Speaker
Dr
Stepan Stepanyan
(Jefferson Lab)
Description
A broad program for studying the quark and gluon structure of hadrons is underway at Jefferson Lab. The cornerstone of this program is understanding the nucleon structure in the framework of Generalized Parton Distributions (GPDs). The GPDs take the description of the internal structure of the nucleon to a new level by providing access to, among other things, the correlations between the (transverse) position and (longitudinal) momentum distributions of the partons. After the first successful experimental studies of GPDs using Deeply Virtual Compton Scattering (DVCS), a slew of data on spin asymmetries and cross section measurements have been provided by dedicate experiments at Jefferson Lab with 6 GeV CEBAF. These results have been added to the pool of data that are used in global fits to extract GPDs and played important role in constraining theoretical models.
Jefferson Lab's electron accelerator, CEBAF, is doubling its energy to 12 GeV and upgrade of experimental equipment is underway in the experimental Halls. The upgrade enables execution of a broader physics program for uncovering the GPDs using exclusive reactions in the new kinematic domain. In this talk, summary of GPD studies with 6 GeV CEBAF and prospects of studies with 12 GeV machine will be discussed.
Primary author
Dr
Stepan Stepanyan
(Jefferson Lab)
