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Titolo: Color gauge invariance in the Drell-Yan process
Autore: Boer, D; Mulders, PJ;
- Indirizzi:
- Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA Brookhaven Natl Lab Upton NY USA 11973 N BNL Res Ctr, Upton, NY 11973 USA Free Univ Amsterdam, Dept Phys & Astron, NL-1081 HV Amsterdam, NetherlandsFree Univ Amsterdam Amsterdam Netherlands NL-1081 HV terdam, Netherlands
- Titolo Testata:
- NUCLEAR PHYSICS B
fascicolo: 1-3,
volume: 569,
anno: 2000,
pagine: 505 - 526
- SICI:
- 0550-3213(20000313)569:1-3<505:CGIITD>2.0.ZU;2-T
- Fonte:
- ISI
- Lingua:
- ENG
- Soggetto:
- TRANSVERSE SPIN ASYMMETRIES; HADRON-HADRON SCATTERING; ODD PARTON DISTRIBUTIONS; PERTURBATION-THEORY; POWER CORRECTIONS; COUNTER-EXAMPLE; CROSS-SECTION; FACTORIZATION;
- Tipo documento:
- Article
- Natura:
- Periodico
- Settore Disciplinare:
- Physical, Chemical & Earth Sciences
- Citazioni:
- 35
- Recensione:
- Indirizzi per estratti:
- Indirizzo: Boer, D Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA Brookhaven Natl Lab Upton NY USA 11973 s Ctr, Upton, NY 11973 USA
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- Citazione:
- D. Boer e P.J. Mulders, "Color gauge invariance in the Drell-Yan process", NUCL PHYS B, 569(1-3), 2000, pp. 505-526
Abstract
We consider the color gauge invariance of a factorized description of the Drell-Yan process cross section, In particular, we focus on the next-to-leading twist contributions for polarized scattering and on the cross section differential in the transverse momentum of the lepton pair in the region where the transverse momentum is small compared to the hard scale. The hadrontensor is expressed in terms of manifestly color gauge invariant, non-local operator matrix elements and a color gauge invariant treatment of soft gluon poles is given. Also, we clarify the discrepancy between two published results for a single spin asymmetry in the Drell-Yan cross section. This asymmetry arises if such a soft gluon pole is present in a specific twist-three hadronic matrix element. (C) 2000 Elsevier Science B.V. All rights reserved.
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Documento generato il 25/05/13 alle ore 12:58:06