TY - JOUR
T1 - Process dependent Sivers function and implication for single spin asymmetry in inclusive hadron production
AU - Gamberg, Leonard
AU - Kang, Zhong Bo
N1 - Funding Information:
We are grateful to M. Anselmino, U. D'Alesio, A. Metz, P. Mulders, F. Murgia, J.W. Qiu, W. Vogelsang, F. Yuan and J. Zhou for useful discussions and comments. L.G. acknowledges support from U.S. Department of Energy under contract DE-FG02-07ER41460 . Z.K. is grateful to RIKEN , Brookhaven National Laboratory , and the U.S. Department of Energy (Contract No. DE-AC02-98CH10886 ) for supporting this work.
PY - 2011/1/24
Y1 - 2011/1/24
N2 - 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 π0 and direct photon productions at RHIC energies. We find the predictions are opposite to those in the conventional GPM approach.
AB - 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 π0 and direct photon productions at RHIC energies. We find the predictions are opposite to those in the conventional GPM approach.
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U2 - 10.1016/j.physletb.2010.11.066
DO - 10.1016/j.physletb.2010.11.066
M3 - Article
AN - SCOPUS:78650626540
SN - 0370-2693
VL - 696
SP - 109
EP - 118
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-2
ER -