Measurement of the proton spin structure function {ital g}{sub 1}{sup p}
- University of California, Department of Physics, Los Angeles, California 90024 (United States)
The Spin Muon Collaboration at CERN probes the internal spin structure of the nucleon in inclusive muon-nucleon scattering. Here, the result of the 1993 proton run will be presented. At the average four momentum transfer of {ital Q}{sup 2}=10 GeV{sup 2} the first moment of the polarized spin structure function {ital g}{sub 1}{sup p} is found to be {Gamma}{sub 1}{sup p}={integral}{sup 1}{sub 0}{ital g}{sub 1}{sup p}({ital x})=0.136{plus_minus}0.011(stat.){plus_minus}0.011(sys.). From this, the quark spin contribution to the proton spin {Sigma}=0.22{plus_minus}0.10(stat.){plus_minus}0.10(sys.) is extracted. Combining all available data, the Bjorken sum rule is confirmed within 10%. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 165548
- Report Number(s):
- CONF-940514-; ISSN 0094-243X; TRN: 96:002214
- Journal Information:
- AIP Conference Proceedings, Vol. 338, Issue 1; Conference: 5. conference on intersections between particle and nuclear physics, St. Petersburg, FL (United States), 31 May - 6 Jun 1994; Other Information: PBD: 10 Jul 1995
- Country of Publication:
- United States
- Language:
- English
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