W hadroproduction at large transverse momentum beyond next-to-leading order

Abstract

We study the production of W bosons at large transverse momentum in p pbar collisions. We show that the next-to-leading order cross section at large transverse momentum is dominated by threshold soft-gluon corrections. We add next-to-next-to-leading-order soft-gluon corrections to the exact next-to-leading-order differential cross sections. We find that these higher-order corrections provide modest enhancements to the transverse momentum distribution of the W at the Tevatron, and reduce significantly the dependence on the factorization and renormalization scales.

17 pages, 8 figures

References in corpus (2)

• Uncertainties of predictions from parton distributions. I: experimental errors
• Next-to-next-to-leading order soft-gluon corrections in top quark hadroproduction

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