Spin Structure of the Deuteron—New Results from CLAS

Conference · Sat Aug 01 04:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3215652· OSTI ID:1999765

Guler, Nevzat

Double spin asymmetries for the proton and the deuteron have been measured in the EG1B experiment using the CLAS detector at Jefferson Lab. Longitudinally polarized electrons at energies 1.6, 2.5, 4.2 and 5.75 GeV were scattered from longitudinally polarized NH3 and ND3 targets. The double spin asymmetry A|| for the proton and the deuteron has been extracted from these data as a function of W and Q2 with unprecedented precision. The virtual photon asymmetry A1 and the spin structure function g1 can be calculated from these measurements by using parametrization to the world data for the virtual photon asymmetry A2 and the unpolarized structure functions F1 and R. The large kinematic coverage of the experiment (0.05 GeV2

• 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: 1999765
• Report Number(s): JLAB-PHY-09-1055; DOE/OR/23177-0983
• Conference Information: Journal Name: AIP Conference Proceedings Journal Issue: 1 Journal Volume: 1149
• Country of Publication: United States
• Language: English