Process dependent Sivers function and implication for single spin asymmetry in inclusive hadron production

Journal Article · Wed Dec 01 00:00:00 EST 2010 · Physics Letters B

OSTI ID:1019481

Gamberg, L; Kang, Z

We study the single transverse spin asymmetries in the single inclusive particle production within the framework of the generalized parton model (GPM). By carefully analyzing the initial- and final-state interactions, we include the process-dependence of the Sivers functions into the GPM formalism. The modified GPM formalism has a close connection with the collinear twist-3 approach. Within the new formalism, we make predictions for inclusive {pi}{sup 0} and direct photon productions at RHIC energies. We find the predictions are opposite to those in the conventional GPM approach.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States). RIKEN Research Center
• Sponsoring Organization: DOE - OFFICE OF SCIENCE
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 1019481
• Report Number(s): BNL-94982-2011-JA; R&D Project: PO-3; TRN: US1103637
• Journal Information: Physics Letters B, Vol. 696, Issue 1-2
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
FINAL-STATE INTERACTIONS
HADRONS
PARTICLE PRODUCTION
PHOTONS
PRODUCTION
SPIN
Sivers function
Process-dependence
Single transverse spin asymmentry
Inclusive hadron production
riken bnl research center