Double-Spin Asymmetry A{sub LT} for Polarized Drell-Yan Process in pp-bar Collisions: Wandzura-Wilczek Contribution
Abstract
The longitudinal-transverse spin asymmetry A{sub LT} in the polarized Drell-Yan process depends on twist-3 quark distributions of nucleon. In addition to the contributions associated with the twist-3 operators, these distributions contain the 'Wandzura-Wilczek (WW)' part, which is determined by a certain integral of twist-2 distributions. The recently obtained empirical information on the transversity allows a realistic estimate of the WW contribution to A{sub LT} for the polarized pp-bar collisions. Our results indicate that rather large A{sub LT}({approx}10%) can be observed in the proposed spin experiments at GSI, with novel pattern as a function of dilepton mass compared with A{sub TT} and A{sub LL}.
- Authors:
-
- Department of Physics, Niigata University, Ikarashi, Niigata 950-2181 (Japan)
- Department of Physics, Juntendo University, Inba, Chiba 270-1695 (Japan)
- Publication Date:
- OSTI Identifier:
- 21316961
- Resource Type:
- Journal Article
- Journal Name:
- AIP Conference Proceedings
- Additional Journal Information:
- Journal Volume: 1149; Journal Issue: 1; Conference: 18. international spin physics symposium, Charlottesville, VA (United States), 6-11 Oct 2008; Other Information: DOI: 10.1063/1.3215697; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; DRELL MODEL; NUCLEONS; PARTICLE PRODUCTION; POLARIZED BEAMS; PROTON-ANTIPROTON INTERACTIONS; QUANTUM CHROMODYNAMICS; QUARK-GLUON INTERACTIONS; QUARKS; REST MASS; SPIN
Citation Formats
Koike, Yuji, Yoshida, Shinsuke, and Tanaka, Kazuhiro. Double-Spin Asymmetry A{sub LT} for Polarized Drell-Yan Process in pp-bar Collisions: Wandzura-Wilczek Contribution. United States: N. p., 2009.
Web. doi:10.1063/1.3215697.
Koike, Yuji, Yoshida, Shinsuke, & Tanaka, Kazuhiro. Double-Spin Asymmetry A{sub LT} for Polarized Drell-Yan Process in pp-bar Collisions: Wandzura-Wilczek Contribution. United States. https://doi.org/10.1063/1.3215697
Koike, Yuji, Yoshida, Shinsuke, and Tanaka, Kazuhiro. 2009.
"Double-Spin Asymmetry A{sub LT} for Polarized Drell-Yan Process in pp-bar Collisions: Wandzura-Wilczek Contribution". United States. https://doi.org/10.1063/1.3215697.
@article{osti_21316961,
title = {Double-Spin Asymmetry A{sub LT} for Polarized Drell-Yan Process in pp-bar Collisions: Wandzura-Wilczek Contribution},
author = {Koike, Yuji and Yoshida, Shinsuke and Tanaka, Kazuhiro},
abstractNote = {The longitudinal-transverse spin asymmetry A{sub LT} in the polarized Drell-Yan process depends on twist-3 quark distributions of nucleon. In addition to the contributions associated with the twist-3 operators, these distributions contain the 'Wandzura-Wilczek (WW)' part, which is determined by a certain integral of twist-2 distributions. The recently obtained empirical information on the transversity allows a realistic estimate of the WW contribution to A{sub LT} for the polarized pp-bar collisions. Our results indicate that rather large A{sub LT}({approx}10%) can be observed in the proposed spin experiments at GSI, with novel pattern as a function of dilepton mass compared with A{sub TT} and A{sub LL}.},
doi = {10.1063/1.3215697},
url = {https://www.osti.gov/biblio/21316961},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1149,
place = {United States},
year = {Tue Aug 04 00:00:00 EDT 2009},
month = {Tue Aug 04 00:00:00 EDT 2009}
}
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