Rev. Mod. Phys. 77, 1257–1302 (2005)

The spin structure of the proton

Abstract

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Steven D. Bass^*
Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck, Austria and Particle Physics Theory Group, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland

Published 9 November 2005

This article reviews the present understanding of the QCD spin structure of the proton. The author first outlines the proton spin puzzle and its possible resolution in QCD. Then the review explores the present and next generation of experiments being undertaken to resolve the proton’s spin-flavor structure, explaining the theoretical issues involved, the present status of experimental investigation, and the open questions and challenges for future investigation.

URL:

http://link.aps.org/doi/10.1103/RevModPhys.77.1257

DOI:

10.1103/RevModPhys.77.1257

PACS:

1238-t, 1420Dh, 0130Rr

^*Electronic address: Steven.Bass@cern.ch

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Rev. Mod. Phys. 77, 1257–1302 (2005)

The spin structure of the proton