Soft-gluon resummation for boosted top-quark production at hadron colliders.

Ferroglia, Andrea; Pecjak, Ben D.; Yang, Li Lin

Abstract

We investigate the production of highly energetic top-quark pairs at hadron colliders, focusing on the case where the invariant mass of the pair is much larger than the mass of the top quark. In particular, we set up a factorization formalism appropriate for describing the differential partonic cross section in the double soft and small-mass limit, and explain how to resum simultaneously logarithmic corrections arising from soft gluon emission and from the ratio of the pair-invariant mass to that of the top quark to next-to-next-to-leading logarithmic accuracy. We explore the implications of our results on approximate next-to-next-to-leading order formulas for the differential cross section in the soft limit, pointing out that they offer a simplified calculational procedure for determining the currently unknown delta-function terms in the limit of high invariant mass.

Citation

Ferroglia, A., Pecjak, B. D., & Yang, L. L. (2012). Soft-gluon resummation for boosted top-quark production at hadron colliders. Physical Review D, 86(3), Article 034010. https://doi.org/10.1103/physrevd.86.034010

• Journal Article Type: Article
• Publication Date: 2012-08
• Deposit Date: Nov 20, 2012
• Journal: Physical Review D - Particles, Fields, Gravitation, and Cosmology
• Print ISSN: 1550-7998
• Electronic ISSN: 1550-2368
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 86
• Issue: 3
• Article Number: 034010
• DOI: https://doi.org/10.1103/physrevd.86.034010
• Public URL: https://durham-repository.worktribe.com/output/1500748