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

Leonard Gamberg; Zhong Bo Kang

doi:10.1016/j.physletb.2010.11.066

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

Leonard Gamberg, Zhong Bo Kang

Division of Science (Berks)

Research output: Contribution to journal › Article › peer-review

55 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	109-118
Number of pages	10
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	696
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physletb.2010.11.066
State	Published - Jan 24 2011

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/j.physletb.2010.11.066

Cite this

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title = "Process dependent Sivers function and implication for single spin asymmetry in inclusive hadron production",

abstract = "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.",

author = "Leonard Gamberg and Kang, \{Zhong Bo\}",

note = "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. ",

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doi = "10.1016/j.physletb.2010.11.066",

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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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SN - 0370-2693

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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 -

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

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