Full NLO predictions for vector-boson scattering into Z bosons and its irreducible background at the LHC

Abstract

Vector-boson scattering into two Z bosons at the LHC is a key channel for the exploration of the electroweak sector of the Standard Model. It allows for the full reconstruction of the scattering process but at the price of a huge irreducible background. For the first time, we present full next-to-leading-order predictions for pp → e + e − µ + µ − jj + X including all electroweak and QCD contributions for vector-boson scattering signal and irreducible background. The results are presented in the form of cross sections and differential distributions. A particular emphasis is put on the newly computed O α 2 s α 5 corrections.

Automated resummation of electroweak Sudakov logarithms in diboson production at future colliders

“…MoCaNLO is an in-house multichannel MC integration program that can calculate NLO QCD+EW cross sections on the level of weighted events to (in principle) arbitrarily complicated SM processes. It provides both off-shell and pole-approximated results and has been used for the computation of full NLO corrections to processes such as vector-boson scattering [91] or t tW production [92].…”

Higher-order EW corrections in ZZ and ZZj production at the LHC

“…In Refs. [31][32][33] full NLO SM results for the class of Vector-Boson-Scattering processes have been obtained. Many of the quoted calculations have been compiled in generator frameworks such as MG5_aMC@NLO [34], Powheg-Box [35], or Sherpa [36,37], which provide backbone infrastructures such as the overall process organisation, phase-space integration, and interfaces to simulations of other physics aspects, including parton showers or models for non-perturbative phenomena.…”