Results on nucleon structure functions from polarized and unpolarized deep inelastic muon scattering experiments at CERN
Abstract
Data are presented on the spin-dependent structure function of the proton, {ital g}{sup {ital p}}{sub 1}, measured in inclusive polarized muon scattering. The first moment of {ital g}{sup {ital p}}{sub 1}({ital x}) is compared with that of earlier experiments and with the Ellis-Jaffe prediction. Also semi-inclusive data are shown, where charged hadrons provide information on spin-flavor correlations. In the context of the quark-parton model the data indicate that quark spins contribute a small fraction to the nucleon spin. All published data of {ital g}{sub 1} in combination confirm the Bjorken sum rule at the 10 percent accuracy level. In a QCD analysis of {ital F}{sup {ital p}}{sub 2} and {ital F}{sup {ital d}}{sub 2}, measured with high precision down to small {ital x} by NMC, the gluon distribution is determined. The {ital F}{sup {ital n}}{sub 2}/{ital F}{sup {ital p}}{sub 2} data are reanalyzed and the Gottfried sum {integral}{sup 1}{sub 0}[{ital F}{sup {ital p}}{sub 2}({ital x}){minus}{ital F}{sup {ital n}}{sub 2}({ital x})]/{ital x} {ital dx} is evaluated. The earlier reported flavor asymmetry in the nucleon is confirmed. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.
- Authors:
-
- NIKHEF, Amsterdam, The Netherlands, representing the Spin Muon Collaboration (SMC) and the New Muon Collaboration (NMC) at CERN (Switzerland)
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 165602
- Report Number(s):
- CONF-9405132-
Journal ID: APCPCS; ISSN 0094-243X; TRN: 96:002265
- Resource Type:
- Journal Article
- Journal Name:
- AIP Conference Proceedings
- Additional Journal Information:
- Journal Volume: 334; Journal Issue: 1; Conference: 14. International IUPAP conference on few body problems in physics, Williamsburg, VA (United States), 26-31 May 1994; Other Information: PBD: 10 May 1995
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 66 PHYSICS; MUON-NUCLEON INTERACTIONS; DEEP INELASTIC SCATTERING; NUCLEONS; STRUCTURE FUNCTIONS; GEV RANGE 100-1000; POLARIZED TARGETS; INCLUSIVE INTERACTIONS; QUARK MODEL; SUM RULES; EXPERIMENTAL DATA
Citation Formats
van Dantzig, R. Results on nucleon structure functions from polarized and unpolarized deep inelastic muon scattering experiments at CERN. United States: N. p., 1995.
Web. doi:10.1063/1.48197.
van Dantzig, R. Results on nucleon structure functions from polarized and unpolarized deep inelastic muon scattering experiments at CERN. United States. https://doi.org/10.1063/1.48197
van Dantzig, R. 1995.
"Results on nucleon structure functions from polarized and unpolarized deep inelastic muon scattering experiments at CERN". United States. https://doi.org/10.1063/1.48197.
@article{osti_165602,
title = {Results on nucleon structure functions from polarized and unpolarized deep inelastic muon scattering experiments at CERN},
author = {van Dantzig, R},
abstractNote = {Data are presented on the spin-dependent structure function of the proton, {ital g}{sup {ital p}}{sub 1}, measured in inclusive polarized muon scattering. The first moment of {ital g}{sup {ital p}}{sub 1}({ital x}) is compared with that of earlier experiments and with the Ellis-Jaffe prediction. Also semi-inclusive data are shown, where charged hadrons provide information on spin-flavor correlations. In the context of the quark-parton model the data indicate that quark spins contribute a small fraction to the nucleon spin. All published data of {ital g}{sub 1} in combination confirm the Bjorken sum rule at the 10 percent accuracy level. In a QCD analysis of {ital F}{sup {ital p}}{sub 2} and {ital F}{sup {ital d}}{sub 2}, measured with high precision down to small {ital x} by NMC, the gluon distribution is determined. The {ital F}{sup {ital n}}{sub 2}/{ital F}{sup {ital p}}{sub 2} data are reanalyzed and the Gottfried sum {integral}{sup 1}{sub 0}[{ital F}{sup {ital p}}{sub 2}({ital x}){minus}{ital F}{sup {ital n}}{sub 2}({ital x})]/{ital x} {ital dx} is evaluated. The earlier reported flavor asymmetry in the nucleon is confirmed. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.},
doi = {10.1063/1.48197},
url = {https://www.osti.gov/biblio/165602},
journal = {AIP Conference Proceedings},
number = 1,
volume = 334,
place = {United States},
year = {Wed May 10 00:00:00 EDT 1995},
month = {Wed May 10 00:00:00 EDT 1995}
}