Threshold resummation of new partonic channels at next-to-leading power

Abstract

Collider observables involving heavy particles are subject to large logarithmic terms near threshold, which must be summed to all orders in perturbation theory to obtain sensible results. Relatively recently, this resummation has been extended to next-to-leading power in the threshold variable, using a variety of approaches. In this paper, we consider partonic channels that turn on only at next-to-leading power, and show that it is possible to resum leading logarithms using well-established diagrammatic techniques in Quantum Chromodynamics. We first consider deep inelastic scattering, where we reproduce the results of a recent study using an effective theory approach. Next, we consider the quark-gluon channel in both Drell-Yan and Higgs boson production, showing that an explicit all-order form for the leading logarithmic partonic cross section can be obtained. Our results agree with previous conjectures based on fixed-order results.

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Cited by in corpus (5)

• Next-to-leading power endpoint factorization and resummation for off-diagonal "gluon" thrust
• Threshold factorization of the Drell-Yan quark-gluon channel and two-loop soft function at next-to-leading power
• Soft gluon resummation for gluon fusion $ZH$ production
• Factorization at subleading power in deep inelastic scattering in the $x\to 1$ limit
• Analytic Result of Higgs Boson Decay to Gluons with Full Quark Mass Dependence