English

High-$\rm{p_T}$ LHC constraints on SMEFT operators affecting rare kaon and hyperon decays

High Energy Physics - Phenomenology 2025-04-04 v2

Abstract

We consider the constraints on new physics affecting rare kaon and hyperon decay as parametrized by a low energy effective theory that can be obtained from high-pT\rm p_T observables at LHC. To this end, we match the relevant low energy Wilson coefficients onto those in SMEFT at dimension six and compute their contributions to charged dilepton, monolepton, monojets, and VH\rm VH searches by ATLAS and CMS. Constraints from rare kaon decays are generally more restrictive, with the ones arising from high-pT\rm p_T measurements complementing them along directions in parameter space to which the former are not sensitive. We also illustrate the effect of a high luminosity LHC run in reducing the viable parameter regions.

Keywords

Cite

@article{arxiv.2410.05859,
  title  = {High-$\rm{p_T}$ LHC constraints on SMEFT operators affecting rare kaon and hyperon decays},
  author = {Arnab Roy and German Valencia},
  journal= {arXiv preprint arXiv:2410.05859},
  year   = {2025}
}

Comments

35 pages, 14 figures; version accepted for publication in JHEP