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Title: Spin Physics with CLAS

Abstract

Inelastic scattering using polarized nucleon targets and polarized charged lepton beams allows the extraction of double and single spin asymmetries that provide information about the helicity structure of the nucleon. A program designed to study such processes at low and intermediate $Q^2$ for the proton and deuteron has been pursued by the CLAS Collaboration at Jefferson Lab since 1998. Our inclusive data with high statistical precision and extensive kinematic coverage allow us to better constrain the polarized parton distributions and to accurately determine various moments of spin structure function $$g_1$$ as a function of $Q^2$. The latest results will be shown, illustrating our contribution to the world data, with comparisons of the data with NLO global fits, phenomenological models, chiral perturbation theory and the GDH and Bjorken sum rules. The semi-inclusive measurements of single and double spin asymmetries for charged and neutral pions are also show, indicating the importance of the orbital motion of quarks in understanding the spin structure of the nucleon.

Authors:
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1004000
Report Number(s):
JLAB-PHY-10-1307; DOE/OR/23177-1416
TRN: US1100566
DOE Contract Number:  
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Conference: XIII Advanced Research Workshop on High Energy Spin Physics, DSPIN-09, 1-5 September 2009; Related Information: Published in proceedings of XIII Advanced Research Workshop on High Energy Spin Physics, DSPIN-09, page 292. Editors: A.V. Efremov, S.V. Goloskov, JINR, May 2010
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCURACY; DEUTERONS; HELICITY; INELASTIC SCATTERING; LEPTON BEAMS; NUCLEONS; PERTURBATION THEORY; PHYSICS; PIONS; PROTONS; QUARKS; SPIN; STRUCTURE FUNCTIONS; SUM RULES; TARGETS

Citation Formats

Prok, Yelena. Spin Physics with CLAS. United States: N. p., 2010. Web.
Prok, Yelena. Spin Physics with CLAS. United States.
Prok, Yelena. 2010. "Spin Physics with CLAS". United States. https://www.osti.gov/servlets/purl/1004000.
@article{osti_1004000,
title = {Spin Physics with CLAS},
author = {Prok, Yelena},
abstractNote = {Inelastic scattering using polarized nucleon targets and polarized charged lepton beams allows the extraction of double and single spin asymmetries that provide information about the helicity structure of the nucleon. A program designed to study such processes at low and intermediate $Q^2$ for the proton and deuteron has been pursued by the CLAS Collaboration at Jefferson Lab since 1998. Our inclusive data with high statistical precision and extensive kinematic coverage allow us to better constrain the polarized parton distributions and to accurately determine various moments of spin structure function $g_1$ as a function of $Q^2$. The latest results will be shown, illustrating our contribution to the world data, with comparisons of the data with NLO global fits, phenomenological models, chiral perturbation theory and the GDH and Bjorken sum rules. The semi-inclusive measurements of single and double spin asymmetries for charged and neutral pions are also show, indicating the importance of the orbital motion of quarks in understanding the spin structure of the nucleon.},
doi = {},
url = {https://www.osti.gov/biblio/1004000}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat May 01 00:00:00 EDT 2010},
month = {Sat May 01 00:00:00 EDT 2010}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

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