Search for the Higgs boson decays <i>H</i> → <i>ee</i> and <i>H</i> → <i>e</i>μ in <i>pp</i> collisions at √<i>s</i>=13 TeV with the ATLAS detector



Aad, G, Abbott, B, Abbott, DC, Abud, A, Abeling, K, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2945 more authors) (2020) Search for the Higgs boson decays <i>H</i> → <i>ee</i> and <i>H</i> → <i>e</i>μ in <i>pp</i> collisions at √<i>s</i>=13 TeV with the ATLAS detector. PHYSICS LETTERS B, 801. 135148-.

Access the full-text of this item by clicking on the Open Access link.

Abstract

Searches for the Higgs boson decays $H \to ee$ and $H \to e \mu$ are performed using data corresponding to an integrated luminosity of 139 fb$^{-1}$ collected with the ATLAS detector in $pp$ collisions at $\sqrt{s} = 13$ TeV at the LHC. No significant signals are observed, in agreement with the Standard Model expectation. For a Higgs boson mass of 125 GeV, the observed (expected) upper limit at the 95% confidence level on the branching fraction $\mathcal{B}(H \to ee)$ is $3.6 \times 10^{-4}$ ($3.5 \times 10^{-4} $) and on $\mathcal{B}(H \to e \mu)$ is $6.1\times 10^{-5} $ ($5.8\times 10^{-5}$). These results represent improvements by factors of about five and six on the previous best limits on $\mathcal{B}(H \to ee)$ and $\mathcal{B}(H \to e \mu)$ respectively.

Item Type: Article
Additional Information: 31 pages in total, author list starting page 15, 1 figure, published in Phys. Lett. B. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2018-58
Uncontrolled Keywords: hep-ex, hep-ex
Depositing User: Symplectic Admin
Date Deposited: 13 Jan 2020 08:43
Last Modified: 07 Oct 2023 14:25
DOI: 10.1016/j.physletb.2019.135148
Open Access URL: https://www.sciencedirect.com/science/article/pii/...
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3070422