Order [alpha][sub [ital s]][sup 2] contributions to the Drell-Yan cross section at fixed target energies

Journal Article · Sun Jan 01 04:00:00 EST 1995 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.51.44· OSTI ID:6718550

Rijken, P J; van Neerven, W L ^[1]

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1. Instituut-Lorentz, University of Leiden, P.O. Box 9506, 2300 RA Leiden (Netherlands)

From the literature one infers that the bulk of the order [alpha][sub [ital s]] corrections to the Drell-Yan cross-sections [ital d][sigma]/[ital dm] and [ital m][sup 3][ital d][sup 2][sigma]/[ital dmdx][sub [ital F]] is constituted by the soft plus virtual gluon part of the coefficient function. In the case of [ital d][sigma]/[ital dm] it can be shown that at fixed target energies the effect of the exact order [alpha][sub [ital s]][sup 2] corrected coefficient function is very well approximated by its soft plus virtual gluon part. Since the complete order [alpha][sub [ital s]][sup 2] contribution to the coefficient function is missing we have to assume that the same approximation also holds for [ital m][sup 3][ital d][sup 2][sigma]/[ital dmdx][sub [ital F]]. It appears that the discrepancy between the exact order [alpha][sub [ital s]] corrected cross section and the massive lepton pair data taken at fixed target experiments can be partially explained by including the order [alpha][sub [ital s]][sup 2] soft plus virtual gluon part of the coefficient function.

• OSTI ID: 6718550
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 51:1; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CORRECTIONS
CROSS SECTIONS
DRELL MODEL
ELEMENTARY PARTICLES
FERMIONS
GLUONS
LEPTONS
POSTULATED PARTICLES