Search for doubly charged Higgs boson production in multi-lepton final states using 139 fb$^{−1}$ of proton-proton collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
B. Leban* on behalf of the ATLAS Collaboration
Pre-published on:
September 17, 2022
Published on:
June 15, 2023
Abstract
A search for pair production of doubly charged Higgs ($H^{\pm \pm}$) bosons, each decaying into a pair of prompt, isolated, and highly energetic leptons with the same electric charge, is presented. The search uses the proton-proton collision data sample at the centre-of-mass energy of 13 TeV corresponding to 139 fb$^{-1}$ of integrated luminosity recorded during Run 2 at the Large Hadron Collider by the ATLAS detector. This analysis focuses on same-charge leptonic decays, $H^{\pm \pm} \rightarrow \ell^{\pm} \ell^{\prime \pm}$, where $\ell, \ell^\prime=e, \mu, \tau$ in two-, three-, and four-lepton channels, but only considers final states which include electrons or muons. No evidence of signal is observed. Corresponding limits on the $H^{++} H^{--}$ production cross-section and consequently a lower limit on $m(H^{\pm \pm})$ are derived at 95% confidence level. Under the assumption that the branching ratios to each of the possible leptonic final states are equal, the observed lower limit on the mass of a doubly charged Higgs boson is 1080 GeV, which represents an improvement over previous limits.
DOI: https://doi.org/10.22323/1.414.1081
How to cite
Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating
very compact bibliographies which can be beneficial to authors and
readers, and in "proceeding" format
which is more detailed and complete.