@Article{ATLASCollaborationAad_etal2021,
author="ATLAS Collaboration (Aad, G. et al
and Aparisi Pozo, J. A.
and Bailey, A. J.
and Cabrera Urban, S.
and Cardillo, F.
and Castillo, F. L.
and Castillo Gimenez, V.
and Costa, M. J.
and Escobar, C.
and Estrada Pastor, O.
and Fiorini, L.
and Fullana Torregrosa, E.
and Fuster, J.
and Garcia, C.
and Garcia Navarro, J. E.
and Gonzalez de la Hoz, S.
and Gonzalvo Rodriguez, G. R.
and Guerrero Rojas, J. G. R.
and Higon-Rodriguez, E.
and Lacasta, C.
and Lozano Bahilo, J. J.
and Mamuzic, J.
and Marti-Garcia, S.
and Martinez Agullo, P.
and Miralles Lopez, M.
and Mitsou, V. A.
and Moreno Llacer, M.
and Navarro-Gonzalez, J.
and Poveda, J.
and Prades Iba{\~{n}}ez, A.
and Rodriguez Bosca, S.
and Ruiz-Martinez, A.
and Sabatini, P.
and Salt, J.
and Sayago Galvan, I.
and Soldevila, U.
and Sanchez, J.
and Torro Pastor, E.
and Valero, A.
and Valls Ferrer, J. A.
and Villaplana Perez, M.
and Vos, M.",
title="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",
journal="Physics Letters B",
year="2021",
publisher="Elsevier",
volume="819",
pages="136412--22pp",
abstract="A search for the Higgs boson decaying into a photon and a pair of electrons or muons with an invariant mass m(ll) < 30 GeV is presented. The analysis is performed using 139 fb(-1) of 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(gamma) process 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 $\mu$= 1.5 +/- 0.5. The Higgs boson production cross-section times the H -> ll(gamma) branching ratio for m(ll) < 30 GeV is determined to be 8.7(-2.7)(+2.8) fb.",
optnote="WOS:000679259200033",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4922), last updated on Thu, 12 Aug 2021 09:22:01 +0000",
issn="0370-2693",
doi="10.1016/j.physletb.2021.136412",
opturl="https://arxiv.org/abs/2103.10322",
opturl="https://doi.org/10.1016/j.physletb.2021.136412",
language="English"
}