Search for the Decay of the Higgs Boson to Charm Quarks with the ATLAS Experiment

M. Aaboud, ATLAS Collaboration, Paul Newman (Contributor), Laura Gonella (Contributor)

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Abstract

A direct search for the Standard Model Higgs boson decaying to a pair of charm quarks is presented. Associated production of the Higgs and $Z$ bosons, in the decay mode $ZH\rightarrow \ell^+ \ell^- c \bar{c}$ is studied. A dataset with an integrated luminosity of 36.1 fb$^{-1}$ of $pp$ collisions at $\sqrt{s}=13$ TeV recorded by the ATLAS experiment at the LHC is used. The $H\rightarrow c\bar{c}$ signature is identified using charm-tagging algorithms. The observed (expected) upper limit on $\sigma(pp \rightarrow ZH) \times \mathcal{B}(H \rightarrow c\bar{c})$ is 2.7 ($3.9^{+2.1}_{-1.1}$) pb at the 95% confidence level for a Higgs boson mass of 125 GeV, while the Standard Model value is 26 fb.
Original languageEnglish
Article number211802
Number of pages20
JournalPhysical Review Letters
Volume120
DOIs
Publication statusPublished - 22 May 2018

Bibliographical note

29 pages in total, author list starting page 13, 2 figures, 3 tables, published version. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2017-01/

Keywords

  • hep-ex

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