The Double Spin Asymmetry in Exclusive π[sup +] Electroproduction with CLAS

Conference · Sat Aug 01 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3215667· OSTI ID:1999764

Pierce, Joshua

The eglb run at Jefferson Lab used the CLAS detector in Hall B along with a 1.6 GeV-¿5.6 GeV polarized electron beam and polarized nuclear targets (composed of NH3 and ND3) to measure single and double spin asymmetries. This analysis is of the double and single spin asymmetries in the exclusive electro-production of positive pions (ep-->epi+n). The asymmetries were measured as a function of W, Q2, cos theta*, and phi*. The value of these asymmetries can be used to help determine the spin structure of the resonances in the baryon resonance region. Preliminary results for the asymmetries are shown.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1999764
• Report Number(s): JLAB-PHY-09-1056; DOE/OR/23177-0984
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1149
• Country of Publication: United States
• Language: English