Transverse-momentum resummation for top-quark pairs at hadron colliders

We develop a framework for a systematic resummation of the transverse momentum distribution of top-quark pairs produced at hadron colliders based on effective field theory. Compared to Drell-Yan and Higgs production, a novel soft function matrix is required to account for the soft gluon emissions fr...

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Bibliographic Details
Published in:arXiv.org 2013-02
Main Authors: Hua Xing Zhu, Chong Sheng Li, Hai Tao Li, Ding Yu Shao, Li Lin Yang
Format: Article
Language:English
Subjects:
Field theory
Large Hadron Collider
Quarks
Transverse momentum
Online Access:Get full text
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Summary:We develop a framework for a systematic resummation of the transverse momentum distribution of top-quark pairs produced at hadron colliders based on effective field theory. Compared to Drell-Yan and Higgs production, a novel soft function matrix is required to account for the soft gluon emissions from the final states. We calculate this soft function at the next-to-leading order, and perform the resummation at the next-to-next-to-leading logarithmic accuracy. We compare our results with parton shower programs and with the experimental data at the Tevatron and the LHC. We also discuss the implications for the top quark charge asymmetry.
ISSN:2331-8422
DOI:10.48550/arxiv.1208.5774