Single spin asymmetries in hadron-hadron collisions

Journal Article · Mon Aug 01 04:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.034030· OSTI ID:20711238

Bacchetta, A ^[1]; Bomhof, C J; Mulders, P J; Pijlman, F ^[2]

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1. Institut fuer Theoretische Physik, Universitaet Regensburg, D-93040 Regensburg (Germany)
2. Department of Physics and Astronomy, Vrije Universiteit Amsterdam, NL-1081 HV Amsterdam (Netherlands)

We study weighted azimuthal single spin asymmetries in hadron-hadron scattering using the diagrammatic approach at leading order and assuming factorization. The effects of the intrinsic transverse momenta of the partons are taken into account. We show that the way in which T-odd functions, such as the Sivers function, appear in these processes does not merely involve a sign flip when compared with semi-inclusive deep inelastic scattering, such as in the case of the Drell-Yan process. Expressions for the weighted scattering cross sections in terms of distribution and fragmentation functions folded with hard cross sections are obtained by introducing modified hard cross sections, referred to as gluonic-pole cross sections.

• OSTI ID: 20711238
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
DEEP INELASTIC SCATTERING
DISTRIBUTION
DRELL MODEL
FACTORIZATION
GLUONS
HADRON-HADRON INTERACTIONS
HARD COLLISION MODELS
QUARKS
SEMI-INCLUSIVE INTERACTIONS
SPIN
TRANSVERSE MOMENTUM