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http://bura.brunel.ac.uk/handle/2438/17327
Title: | Search for the decay of a Higgs boson in the ℓℓγ channel in proton-proton collisions at √s=13 TeV |
Authors: | Sirunyan, AM Tumasyan, A Adam, W Ambrogi, F Asilar, E Bergauer, T Brandstetter, J Brondolin, E Dragicevic, M Erö, J Escalante Del Valle, A Flechl, M Frühwirth, R Ghete, VM Hrubec, J Jeitler, M Krammer, N Krätschmer, I Liko, D Madlener, T Mikulec, I Rad, N Rohringer, H Schieck, J Schöfbeck, R Spanring, M Spitzbart, D Taurok, A Waltenberger, W Wittmann, J Wulz, CE Zarucki, M Chekhovsky, V Mossolov, V Suarez Gonzalez, J De Wolf, EA Di Croce, D Janssen, X Lauwers, J Pieters, M Van De Klundert, M Van Haevermaet, H Van Mechelen, P Van Remortel, N Abu Zeid, S Blekman, F D Hondt, J De Bruyn, I De Clercq, J Deroover, K Flouris, G Lontkovskyi, D Lowette, S Marchesini, I Moortgat, S Moreels, L Python, Q Skovpen, K Tavernier, S Van Doninck, W Van Mulders, P Van Parijs, I Beghin, D Bilin, B Brun, H Clerbaux, B De Lentdecker, G Delannoy, H Dorney, B Fasanella, G Favart, L Goldouzian, R Grebenyuk, A Kalsi, AK Lenzi, T Luetic, J Postiau, N Starling, E Thomas, L Vander Velde, C Vanlaer, P Vannerom, D Wang, Q Cornelis, T Dobur, D Fagot, A Gul, M Khvastunov, I Poyraz, D Roskas, C Trocino, D Tytgat, M Verbeke, W Vermassen, B Vit, M |
Keywords: | Beyond Standard Model;Hadron-Hadron scattering (experiments);Higgs physics |
Issue Date: | 2018 |
Publisher: | Springer Verlag |
Citation: | Journal of High Energy Physics, 2018, 2018 (11) |
Abstract: | A search for a Higgs boson decaying into a pair of electrons or muons and a photon is described. Higgs boson decays to a Z boson and a photon (H → Zγ → ``γ,` = e or µ), or to two photons, one of which has an internal conversion into a muon pair (H → γ∗γ → µµγ) were considered. The analysis is performed using a data set recorded by the CMS experiment at the LHC from proton-proton collisions at a center-of-mass energy of 13TeV, corresponding to an integrated luminosity of 35.9fb−1. No significant excess above the background prediction has been found. Limits are set on the cross section for a standard model Higgs boson decaying to opposite-sign electron or muon pairs and a photon. The observed limits on cross section times the corresponding branching fractions vary between 1.4 and 4.0 (6.1 and 11.4) times the standard model cross section for H → γ∗γ → µµγ (H → Zγ → ``γ) in the 120–130GeV mass range of the ``γ system. The H → γ∗γ → µµγ and H → Zγ → ``γ analyses are combined for mH = 125GeV, obtaining an observed (expected) 95% confidence level upper limit of 3.9(2.0) times the standard model cross section. |
URI: | http://bura.brunel.ac.uk/handle/2438/17328 |
DOI: | http://dx.doi.org/10.1007/JHEP11(2018)152 |
ISSN: | 1126-6708 http://dx.doi.org/10.1007/JHEP11(2018)152 |
Appears in Collections: | Publications Publications |
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