Latest Studies of the SM Higgs Boson Couplings to Fermions at ATLAS

TL;DR

This paper reports on recent ATLAS measurements of the Higgs boson's interactions with fermions, including tests of CP violation, production modes, and rare decay searches using 139 fb$^{-1}$ of data at 13 TeV.

Contribution

It presents the latest experimental results on Higgs-fermion couplings, including the first direct CP violation probe in top Yukawa interactions and updated decay and production analyses.

Findings

First direct CP violation probe in top Yukawa coupling

Updated measurements of Higgs production with W/Z in b-bbar channel

Searches for Higgs decays to muons and electrons

Abstract

This proceeding presents the latest studies on the Yukawa couplings of the Standard Model Higgs boson with 139 fb$^{-1}$ data collected using the ATLAS detector at a center-of-mass energy of 13 TeV. A first direct probe of $CP$ violation in the top-quark Yukawa coupling using events where the Higgs boson is produced in association with top quarks ($t\bar{t}H$ and $tH$), and decays into two photons ($H \rightarrow \gamma \gamma$ ) is discussed. The latest results on the Higgs boson production in association with a $W$ or $Z$ boson ($VH$) in the $H \rightarrow b \bar{b}$ channel are depicted as well. Finally, the searches for Higgs boson decays into two muons ($H \rightarrow \mu^{+} \mu^{-}$) and two electrons ($H \rightarrow e^{+} e^{-}$) are presented.