A sensitivity study of VBS and diboson WW to dimension-6 EFT operators at the LHC
Abstract
We present a parton-level study of electro-weak production of vector-boson pairs at the Large Hadron Collider, establishing the sensitivity to a set of dimension-six operators in the Standard Model Effective Field Theory (SMEFT). Different final states are statistically combined, and we discuss how the orthogonality and interdependence of different analyses must be considered to obtain the most stringent constraints. The main novelties of our study are the inclusion of SMEFT effects in non-resonant diagrams and in irreducible QCD backgrounds, and an exhaustive template analysis of optimal observables for each operator and process considered. We also assess for the first time the sensitivity of vector-boson-scattering searches in semileptonic final states.
Keywords
Cite
@article{arxiv.2108.03199,
title = {A sensitivity study of VBS and diboson WW to dimension-6 EFT operators at the LHC},
author = {Riccardo Bellan and Giacomo Boldrini and Daniele Brambilla and Ilaria Brivio and Riccardo Brusa and Flavia Cetorelli and Marco Chiusi and Roberto Covarelli and Vittorio Del Tatto and Pietro Govoni and Andrea Massironi and Leonardo Olivi and Giacomo Ortona and Giorgio Pizzati and Alessandro Tarabini and Antonio Vagnerini and Elena Vernazza and Jie Xiao},
journal= {arXiv preprint arXiv:2108.03199},
year = {2022}
}
Comments
Final version after editor's revision. Improved text descriptions and plots styling. Added subparagraph in chapter 5.1 discussing the impact of SMEFT corrections in propagators which was previously ignored