Fiducial qT resummation of color-singlet processes at N3LL+NNLO

We present a framework for q(T) resummation at (NLL)-L-3+NNLO accuracy for arbitrary color-singlet processes based on a factorization theorem in SCET. Our implementation CuTe-MCFM is fully differential in the Born kinematics and matches to large-q(T) fixed-order predictions at relative order alpha s2. It provides an efficient way to estimate uncertainties from fixed-order truncation, resummation, and parton distribution functions. In addition to W-+/-, Z and H production, also the diboson processes gamma gamma, Z gamma, ZH and (WH)-H-+/- are available, including decays. We discuss and exemplify the framework with several direct comparisons to experimental measurements as well as inclusive benchmark results. In particular, we present novel results for gamma gamma and Z gamma at (NLL)-L-3+NNLO and discuss in detail the power corrections induced by photon isolation requirements.

Automated summary

Our framework provides a q(T) resummation method for arbitrary color-singlet processes at (NLL)-L-3+NNLO accuracy based on a factorization theorem in SCET. The implementation CuTe-MCFM is fully differential and matches large-q(T) fixed-order predictions at relative order alpha s2, allowing for efficient estimation of uncertainties. In addition to various production processes, the framework is also applicable to diboson processes with decays, showing novel results for gamma gamma and Z gamma at (NLL)-L-3+NNLO accuracy.