Sivers effect in Drell-Yan processes

Journal Article · Sun Mar 01 04:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.054010· OSTI ID:21260080

Anselmino, M; Boglione, M; Melis, S; Prokudin, A ^[1]; D'Alesio, U ^[2]; Murgia, F ^[3]

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1. Dipartimento di Fisica Teorica, Universita di Torino and INFN, Sezione di Torino, Via P. Giuria 1, I-10125 Torino (Italy)
2. Dipartimento di Fisica, Universita di Cagliari, I-09042 Monserrato (Italy)
3. INFN, Sezione di Cagliari, C.P. 170, I-09042 Monserrato (Italy)

The Sivers distributions recently extracted from semi-inclusive deep inelastic scattering data [M. Anselmino et al., Eur. Phys. J. A 39, 89 (2009)] are used to compute estimates for Sivers asymmetries in Drell-Yan processes which are being planned at several facilities (RHIC, COMPASS, J-PARC, PAX, PANDA, NICA (JINR) and SPASCHARM (IHEP)). Most of these asymmetries turn out to be large and could allow a clear test of the predicted sign change of the Sivers distributions when active in SIDIS and Drell-Yan processes. This is regarded as a fundamental test of our understanding, within QCD and the factorization scheme, of single spin asymmetries.

• OSTI ID: 21260080
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 79; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
BROOKHAVEN RHIC
COMPASS-D TOKAMAK
DEEP INELASTIC SCATTERING
DISTRIBUTION
DRELL MODEL
FACTORIZATION
QUANTUM CHROMODYNAMICS
SPIN