Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1993-05-24
Phys.Lett.B313:131-140,1993
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages (LateX) + 6 postscript figures encoded through uufiles; (improved estimate of errors on higher-twist effects, in text
Scientific paper
10.1016/0370-2693(93)91202-X
We re-analyze data on deep inelastic polarized lepton-nucleon scattering, with particular attention to testing the Bjorken sum rule and estimating the quark contributions to the nucleon spin. Since only structure function data at fixed $Q^2$ can be used to test sum rules, we use E142 asymmetry measurements and unpolarized structure function data to extract $g_1^n$ at fixed $Q^2$ = 2 GeV$^2$. When higher-twist effects, which are important at low $Q^2$, are included, both the E142 and SMC data are compatible with the Bjorken sum rule within one standard deviation. Assuming validity of the Bjorken sum rule, we estimate the quark contributions to the nucleon spin, finding that their total net contribution is small, with the strange quark contribution non-zero and negative. The quark spin content of the nucleon spin is in agreement with Skyrme model.
Ellis John
Karliner Marek
No associations
LandOfFree
Analysis of Data on Polarized Lepton-Nucleon Scattering does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Analysis of Data on Polarized Lepton-Nucleon Scattering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analysis of Data on Polarized Lepton-Nucleon Scattering will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-651331