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Title: Nucleon spin structure at Jefferson Lab

In the past decade an extensive experimental program to measure the spin structure of the nucleon has been carried out in the three halls at Jefferson Lab. Using a longitudinally polarized beam scattering off longitudinally or transversely polarized 3He, NH3 and ND3 targets, the double spin asymmetries A|| and A[perpendicular] were measured, providing data of impressively high precision that gives a better understanding of the structure of the nucleon in the deep inelastic scattering and the valence quarks regions. The virtual photon asymmetries A1,2 and polarized structure functions g1,2 were also extracted for the proton, neutron and deuteron over large kinematic ranges, allowing the extraction of first moments and the testing of sum rules and duality.
Authors:
Publication Date:
OSTI Identifier:
1028827
Report Number(s):
JLAB-PHY-11-1445; DOE/OR/23177-1890
TRN: US1105515
DOE Contract Number:
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Conference: MENU 2010, 31 May - 4 Jun 2010, Williamsburg, Virginia.
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCURACY; DEEP INELASTIC SCATTERING; DEUTERONS; DUALITY; NEUTRONS; NUCLEONS; PHOTONS; POLARIZED BEAMS; QUARKS; SCATTERING; SPIN; STRUCTURE FUNCTIONS; SUM RULES; TARGETS; TESTING; VALENCE