CERN Accelerating science

Article
Report number	arXiv:2004.07720 ; MPP-2020-53 ; LAPTH-012/20
Title	Accurate single- and double-differential resummation of colour-singlet processes with MATRIX+RADISH: W$^{+}$W$^{−}$ production at the LHC
Author(s)	Kallweit, Stefan (Milan Bicocca U. ; INFN, Milan Bicocca) ; Re, Emanuele (Annecy, LAPTH) ; Rottoli, Luca (Milan Bicocca U. ; INFN, Milan Bicocca ; LBNL, Berkeley) ; Wiesemann, Marius (Munich, Max Planck Inst.)
Publication	2020-12-22
Imprint	2020-04-16
Number of pages	48
Note	47 pages, 7 figures, 2 tables; corresponds to the version published on JHEP
In:	JHEP 2012 (2020) 147
DOI	10.1007/JHEP12(2020)147
Subject category	hep-ph ; Particle Physics - Phenomenology
Accelerator/Facility, Experiment	CERN LHC
Abstract	We present the combination of fully differential cross sections for colour-singlet production processes at next-to-next-to-leading order (NNLO) QCD obtained with MATRIX and all-order resummation through RadISH. This interface allows us to achieve unprecedented accuracy for various transverse observables in $2 \rightarrow 2$ production processes. As an important application we consider $W^+ W^-$ production at the LHC, more precisely the full leptonic process $pp\to \ell^+\ell^{\prime\, -}\nu_{\ell}{\bar\nu}_{\ell^\prime}+X$ with $\ell'\neq\ell$, and we present resummed predictions for differential distributions in presence of fiducial selection cuts. In particular, we resum the transverse-momentum spectrum of the $W^+ W^-$ pair at next-to-next-to-next-to-leading logarithmic (N$^3$LL) accuracy and match it to the integrated NNLO cross section. The transverse-momentum spectrum of the leading jet in $W^+ W^-$ production is calculated at NNLO+NNLL accuracy. Finally, the joint resummation for the transverse-momentum spectrum of the $W^+ W^-$ pair in the presence of a jet veto is performed at NNLO+NNLL. Our phenomenological study highlights the importance of higher-order perturbative and logarithmic corrections for precision phenomenology at the LHC.
Copyright/License	CC-BY-4.0 preprint: (License: arXiv nonexclusive-distrib 1.0)

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