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

Abstract

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.

5 pages, 4 figures, published version in PRL

References in corpus (4)

• An NNLO subtraction formalism in hadron collisions and its application to Higgs boson production at the LHC
• Drell-Yan production at small q_T, transverse parton distributions and the collinear anomaly
• QCD transverse-momentum resummation in gluon fusion processes
• QCD Coherence and the Top Quark Asymmetry

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