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  • Search for Higgs boson pair...
    Jeitler, M.; Mikulec, I.; Van De Klundert, M.; Blekman, F.; Marchesini, I.; Tytgat, M.; Brochet, S.; Quertenmont, L.; Da Costa, E.M.; Misheva, M.; Gao, X.; Chen, G.; Wang, D.; Zhang, F.; Mohamed, A.; Salama, E.; Perrini, L.; Laurila, S.; Khvedelidze, A.; Müller, T.; Stahl, A.; Beernaert, K.; Shevchenko, R.; Tholen, H.; Weiler, T.; Evangelou, I.; Mallios, S.; Garg, R.B.; Das, P.; Guiducci, L.; Focardi, E.; Lenzi, P.; Ghezzi, A.; Govoni, P.; Menasce, D.; Ronchese, P.; Ressegotti, M.; Bilei, G.M.; Rossi, A.; Borrello, L.; Ciocci, M.A.; Dell'Orso, R.; Monaco, V.; Brochero Cifuentes, J.A.; Kim, J.; Juodagalvis, A.; Ahmad, A.; Krolikowski, J.; Bargassa, P.; Smirnov, V.; Uvarov, L.; Chistov, R.; Volkov, A.; De Roeck, A.; Mersi, S.; Steggemann, J.; Pata, J.; Aarrestad, T.K.; Candelise, V.; Tsai, J.f.; Srimanobhas, N.; Komurcu, Y.; Olaiya, E.; Mastrolorenzo, L.; Shtipliyski, A.; Summers, S.; Tapper, A.; Borzou, A.; Pellett, D.; Schnaible, C.; Long, O.R.; Letts, J.; Suarez, I.; Bauerdick, L.A.T.; Sexton-Kennedy, E.; Mei, H.; Fehling, D.; Bean, A.; Baden, A.; Feng, Y.; Gomez Ceballos, G.; Harris, P.; Mironov, C.; Nourbakhsh, S.; Kravchenko, I.; Siado, J.E.; Teixeira De Lima, R.; Hahn, K.A.; Marinelli, N.; Hill, C.; Wulsin, H.W.; Olsen, J.; Jung, A.W.; Thapa, K.; Johns, W.; Maguire, C.; Tuo, S.; Neu, C.; Sturdy, J.; Ruggles, T.

    Physics letters. B, 01/2019, Letnik: 788
    Journal Article

    A search is presented for the production of a pair of Higgs bosons, where one decays into two photons and the other one into a bottom quark–antiquark pair. The analysis is performed using proton–proton collision data at s=13TeV recorded in 2016 by the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9fb−1. The results are in agreement with standard model (SM) predictions. In a search for resonant production, upper limits are set on the cross section for new spin-0 or spin-2 particles. For the SM-like nonresonant production hypothesis, the data exclude a product of cross section and branching fraction larger than 2.0fb at 95% confidence level (CL), corresponding to about 24 times the SM prediction. Values of the effective Higgs boson self-coupling κλ are constrained to be within the range −11<κλ<17 at 95% CL, assuming all other Higgs boson couplings are at their SM value. The constraints on κλ are the most restrictive to date.