One-loop corrections to the double-real emission contribution to the zero-jettiness soft function at N3LO in QCD

Abstract

We present an analytic calculation of the one-loop correction to the double-real emission contribution to the zero-jettiness soft function at N3LO in QCD, accounting for both gluon-gluon and quark-antiquark soft final-state partons. We explain all the relevant steps of the computation including the reduction of phase-space integrals to master integrals in the presence of Heaviside functions, and the methods we employed to compute them.

33 pages, results attached, v2: Normalization fixed, matches published version

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