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|Title:||Evidence for Higgs boson decays to a low-mass dilepton system and a photon in pp collisions at √s=13 TeV with the ATLAS detector|
|Other Titles:||Evidence for Higgs boson decays to a low-mass dilepton system and a photon in pp collisions at root s=13 TeV with the ATLAS detector|
Abed Abud, A.
Abusleme Hoffman, A.C.
Adam Bourdarios, C.
|Citation:||Physics Letters B: Nuclear Physics and Particle Physics, 2021; 819:136412-1-136412-22|
|G. Aad, B. Abbott, D.C. Abbot ... Paul Jackson ... Harish Potti ... Martin White ... et al.|
|Abstract:||A search for the Higgs boson decaying into a photon and a pair of electrons or muons with an invariant mass mll<30 GeV is presented. The analysis is performed using 139 fb−1of proton–proton collision data, produced by the LHC at a centre-of-mass energy of 13 TeV and collected by the ATLAS experiment. Evidence for the H→ll γprocess is found with a significance of 3.2 over the background-only hypothesis, compared to an expected significance of 2.1 for the Standard Model prediction. The best-fit value of the signal-strength parameter, defined as the ratio of the observed signal yield to the one expected in the Standard Model, is μ =1.5 ±0.5. The Higgs boson production cross-section times the H→llγbranching ratio for mll<30 GeV is determined to be 8.7+2.8−2.7fb|
|Rights:||©2021 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP|
|Appears in Collections:||Aurora harvest 8|
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