Transverse Spin Effects in SIDIS at COMPASS

Journal Article · Thu Dec 17 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3293874· OSTI ID:21325696

Joosten, Rainer ^[1]

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1. HISKP, University Bonn, Nussallee 14-16, 53115 Bonn (Germany)

The measurement of single spin asymmetries in semi-inclusive deep-inelastic scattering (SIDIS) on a transversely polarized target is an important part of the COMPASS physics program. It allows us to investigate the transversity distribution functions as well as transverse momentum dependent distribution functions by measuring azimuthal asymmetries in the hadron production. After COMPASS took data in the years 2002-2004 by scattering a 160 GeV/c muon beam off a transversely polarized deuteron ({sup 6}LiD) target, in 2007 additional data was collected on a transversely polarized proton (NH{sub 3}) target. In this contribution, the latest results on the Collins and Sivers asymmetries in single hadron production as well as two-hadron asymmetries from the analysis of the proton data are presented and compared with existing model predictions.

• OSTI ID: 21325696
• Journal Information: AIP Conference Proceedings, Vol. 1182, Issue 1; Conference: 10. conference on the intersections of particle and nuclear physics, San Diego, CA (United States), 26-31 May 2009; Other Information: DOI: 10.1063/1.3293874; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMMONIA
ASYMMETRY
DEEP INELASTIC SCATTERING
DEUTERIUM TARGET
DISTRIBUTION FUNCTIONS
GEV RANGE
MULTIPARTICLE SPECTROMETERS
MUON BEAMS
MUON REACTIONS
PARTICLE IDENTIFICATION
PARTICLE PRODUCTION
POLARIZED TARGETS
PROTONS
QUARKS
SEMI-INCLUSIVE INTERACTIONS
SPIN
SUPERSYMMETRY
TRANSVERSE MOMENTUM