NLO Electroweak Corrections to Multi-Boson Processes at a Muon Collider

TL;DR

This paper calculates next-to-leading order electroweak corrections for multi-boson production processes at a future muon collider, highlighting their significance for high-energy physics studies of the electroweak sector.

Contribution

It provides the first comprehensive NLO electroweak correction calculations for multi-boson processes at a muon collider using automated Monte Carlo tools.

Findings

Electroweak corrections significantly impact high-energy observables.

Large logarithmic effects from initial state radiation are observed.

Energy cuts on photons influence differential distributions.

Abstract

We present results on NLO electroweak (EW) corrections to multiple massive boson production processes at a future muon collider. Inclusive cross sections with $\mathcal{O}(\alpha)$ corrections for processes for up to four bosons in the final state as well as differential distributions for $HZ$ production are computed for $\sqrt{s}=3$, $10$ and $14$ TeV by using FKS subtraction in the NLO EW automated Monte-Carlo framework WHIZARD+RECOLA. Large logarithmic effects due to collinear ISR and EW virtual correction factors as well as the impacts of an energy cut on hard photons are discussed with an emphasis on the properties of Higgsstrahlung. The potential of a proposed muon collider for studying physics of the EW sector is underlined by the EW corrections significantly affecting observables for processes at high energies and boson multiplicities.