Exclusive Hard Processes with CLAS and Generalized Parton Distributions

Apr 13, 2016, 5:00 PM
15m
SR4a (DESY Hamburg)

SR4a

DESY Hamburg

Spin Physics WG6 Spin Physics

Speaker

Kyungseon Joo (University of Connecticut, Storrs, CT 06269, USA)

Description

An extensive experimental program with the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab has been under way to study the 3-dimensional structure of the nucleon through investigating Generalized Parton Distributions (GPDs) by measuring hard exclusive processes such as deeply virtual Compton scattering (DVCS) and deeply virtual meson production (DVMP). The GPDs provide a route to spatial tomography of the nucleon and have revolutionized how we characterize nucleon structure, by allowing a unified description of quark densities in spatial coordinates in relation to their momenta. Studies of the GPDs will be the focus of a sizable part of the program of the 12 GeV CEBAF upgrade and a driving force behind the construction of the Electron Ion Collider (EIC). In this contribution, we present recent results of the target spin and double spin asymmetries from deeply virtual Compton scattering (DVCS) and deeply virtual neutral pion production. Data were taken at Jefferson Lab using the CLAS detector and a longitudinally polarized 14 NH 3 target with a 6 GeV polarized electron beam. These results could provide new insights into the 3-dimensional nucleon structure.

Primary author

Kyungseon Joo (University of Connecticut, Storrs, CT 06269, USA)

Presentation materials