The role of three-gluon correlation functions in the single spin asymmetry

The role of three-gluon correlation functions in the single spin asymmetry

We study the twist-3 three-gluon contribution to the single spin asymmetry in the light-hadron production in pp collision in the framework of the collinear factorization. We derive the corresponding cross section formula in the leading order with respect to the QCD coupling constant. We also prese...

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Main Authors: Beppu Hiroo, Kanazawa Koichi, Koike Yuji, Yoshida Shinsuke
Format: Article
Language:English
Published: EDP Sciences 2015-01-01
Series:EPJ Web of Conferences
Online Access:http://dx.doi.org/10.1051/epjconf/20158502012
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spelling doaj-121775afff274117851662f90cfe41142021-08-02T01:40:59ZengEDP SciencesEPJ Web of Conferences2100-014X2015-01-01850201210.1051/epjconf/20158502012epjconf_tv2014_02012The role of three-gluon correlation functions in the single spin asymmetryBeppu Hiroo0Kanazawa KoichiKoike Yuji1Yoshida ShinsukeGraduate School of Science and Technology, Niigata UniversityDepartment of Physics, Niigata University We study the twist-3 three-gluon contribution to the single spin asymmetry in the light-hadron production in pp collision in the framework of the collinear factorization. We derive the corresponding cross section formula in the leading order with respect to the QCD coupling constant. We also present a numerical calculation of the asymmetry at the RHIC energy, using a model for the three-gluon correlation functions suggested by the asymmetry for the D-meson production at RHIC. We found that the asymmetries for the light-hadron and the jet productions are very useful to constrain the magnitude and form of the correlation functions. Since the three-gluon correlation functions shift the asymmetry for all kinds of hadrons in the same direction, it is unlikely that they become a main source of the asymmetry. http://dx.doi.org/10.1051/epjconf/20158502012
collection DOAJ
language English
format Article
sources DOAJ
author Beppu Hiroo
Kanazawa Koichi
Koike Yuji
Yoshida Shinsuke
spellingShingle Beppu Hiroo
Kanazawa Koichi
Koike Yuji
Yoshida Shinsuke
The role of three-gluon correlation functions in the single spin asymmetry
EPJ Web of Conferences
author_facet Beppu Hiroo
Kanazawa Koichi
Koike Yuji
Yoshida Shinsuke
author_sort Beppu Hiroo
title The role of three-gluon correlation functions in the single spin asymmetry
title_short The role of three-gluon correlation functions in the single spin asymmetry
title_full The role of three-gluon correlation functions in the single spin asymmetry
title_fullStr The role of three-gluon correlation functions in the single spin asymmetry
title_full_unstemmed The role of three-gluon correlation functions in the single spin asymmetry
title_sort role of three-gluon correlation functions in the single spin asymmetry
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2015-01-01
description We study the twist-3 three-gluon contribution to the single spin asymmetry in the light-hadron production in pp collision in the framework of the collinear factorization. We derive the corresponding cross section formula in the leading order with respect to the QCD coupling constant. We also present a numerical calculation of the asymmetry at the RHIC energy, using a model for the three-gluon correlation functions suggested by the asymmetry for the D-meson production at RHIC. We found that the asymmetries for the light-hadron and the jet productions are very useful to constrain the magnitude and form of the correlation functions. Since the three-gluon correlation functions shift the asymmetry for all kinds of hadrons in the same direction, it is unlikely that they become a main source of the asymmetry.
url http://dx.doi.org/10.1051/epjconf/20158502012
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