Nucleon Spin Structure Functions g1 and g2 from Polarized Inclusive Scattering

Conference · Tue Jul 01 04:00:00 EDT 2003

DOI:https://doi.org/10.1063/1.1607121· OSTI ID:955411

Averett, Todd

This paper will present a survey of recent experimental results for the g1 and g2 spin structure functions. Over the past decade, these structure functions (and the virtual photon asymmetries A1 and A2) have been well-measured in the large-Q2 scaling region using inclusive polarized deep-inelastic scattering. New precision results from Jefferson Lab are now becoming available which cover kinematic regions that were previously poorly measured or completely unmeasured. Topics covered will include: recent experiments at Jefferson Lab which have made precise measurements of g1 in the resonance region for both proton and neutron to investigate the Q2 evolution of the GDH sum rule, a new measurement of A1 for the neutron in the large-x region where valence quark dynamics dominate, new precision results for g2 from Jefferson Lab, a review of the g1 results and NLO analyses in the scaling region for the SLAC, HERMES, and SMC data. Finally, a survey of results expected from several new experime

• Research Organization: Thomas Jefferson Lab National Accelerator Facility
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 955411
• Report Number(s): JLAB-PHY-02-202; DOE/ER/40150-5045
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
NEUTRONS
NUCLEONS
PHOTONS
PROTONS
QUARKS
RESONANCE
SCATTERING
SPIN
STANFORD LINEAR ACCELERATOR CENTER
STRUCTURE FUNCTIONS
SUM RULES
VALENCE