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  • Observation of H→bb¯ decays...
    Alberghi, G.L.; Alconada Verzini, M.J.; Alderweireldt, S.; Alexopoulos, T.; Aperio Bella, L.; Bandyopadhyay, A.; Beddall, A.J.; Bedognetti, M.; Bentvelsen, S.; Beringer, J.; Biebel, O.; Biesuz, N.V.; Bisanz, T.; Borissov, G.; Brock, R.; Camarero Munoz, D.; Campanelli, M.; Carbone, R.M.; Chapman, J.D.; Clark, M.R.; Da Via, C.; Darmora, S.; Del Peso, J.; Dova, M.T.; Ellis, N.; Gasnikova, K.; Ghasemi, S.; Giromini, P.; Gravili, F.G.; Grimm, K.; Guest, D.; Gutierrez, P.; Haddad, N.; Hansen, J.D.; Haywood, S.J.; Held, A.; Hill, J.C.; Hill, K.K.; Iizawa, T.; Kempster, J.J.; Khubua, J.; Lanni, F.; Lanza, A.; Lau, T.S.; Lellouch, D.; Li, L.; Litke, A.M.; Lösle, A.; Marzin, A.; Mastrandrea, P.; McCarthy, T.G.; Merola, L.; Merritt, F.S.; Metcalfe, J.; Miyagawa, P.S.; Navarro, G.; Neal, H.A.; Nechaeva, P.Y.; Nikiforou, N.; Nomachi, M.; Otero y Garzon, G.; Pater, J.R.; Pedersen, M.; Peleganchuk, S.V.; Perepelitsa, D.V.; Perrella, S.; Phillips, P.W.; Podberezko, P.; Powell, T.D.; Ravinovich, I.; Read, A.L.; Reichert, J.; Rijssenbeek, M.; Ristić, B.; Romano, M.; Salazar Loyola, J.E.; Sandaker, H.; Sbarra, C.; Schott, M.; Seidel, S.C.; Shi, L.; Stegler, M.; Strom, D.M.; Sulin, V.V.; Tahirovic, E.; Tian, Y.; Tikhonov, Yu.A.; Todome, K.; Tompkins, L.; Tuts, P.M.; Vadla, K.O.H.; Villa, M.; Watson, M.F.; Wolters, H.; Wyatt, T.R.; Xu, L.; Yuen, S.P.Y.; Zeißner, S.V.; Zhang, G.; Zhou, Y.

    Physics letters. B, 11/2018, Letnik: 786
    Journal Article

    A search for the decay of the Standard Model Higgs boson into a bb¯ pair when produced in association with a W or Z boson is performed with the ATLAS detector. The data, corresponding to an integrated luminosity of 79.8fb−1 were collected in proton–proton collisions during Run 2 of the Large Hadron Collider at a centre-of-mass energy of 13TeV. For a Higgs boson mass of 125GeV, an excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.9 (4.3) standard deviations. A combination with the results from other searches in Run 1 and in Run 2 for the Higgs boson in the bb¯ decay mode is performed, which yields an observed (expected) significance of 5.4 (5.5) standard deviations, thus providing direct observation of the Higgs boson decay into b-quarks. The ratio of the measured event yield for a Higgs boson decaying into bb¯ to the Standard Model expectation is 1.01±0.12(stat.)−0.15+0.16(syst.). Additionally, a combination of Run 2 results searching for the Higgs boson produced in association with a vector boson yields an observed (expected) significance of 5.3 (4.8) standard deviations.