NUK - logo
E-viri
Recenzirano Odprti dostop
  • Search for heavy neutral le...
    Alexander, M.; Baryshnikov, F.; Belov, I.; Berezhnoy, A.; Bettler, M. O.; Blusk, S.; Calvi, M.; Campora Perez, D. H.; Campoverde Quezada, A. F.; Carli, I.; Carus, L.; Chadwick, A. J.; Chen, C.; Coombs, G.; Couturier, B.; Crkovská, J.; Danilina, A.; Davis, A.; Dieste Maronas, L.; Dudek, M. W.; Ene, A.; Esen, S.; Falabella, A.; Ferrari, F.; Ferreres Sole, S.; Firlej, M.; Gallas Torreira, A.; Garau, M.; Gascon, D.; Gioventù, A.; Gomez Fernandez, S.; Govorkova, E.; Gu, C.; Hu, J.; Hu, W.; Huang, X.; Jacobsson, R.; Kazeev, N.; Klimaszewski, K.; Kopciewicz, P.; Krupa, W.; Kuindersma, H. S.; Lafferty, G.; Lai, A.; Liu, G.; Lovell, G. H.; Lusiani, A.; Mead, J. V.; Meloni, S.; Mombächer, T.; Morris, A. G.; Mu, H.; Naik, P.; Neufeld, N.; O’Hanlon, D. P.; Pappagallo, M.; Parker, W.; Passaleva, G.; Patrignani, C.; Pearce, A.; Petridis, K.; Piccini, M.; Polycarpo, E.; Poslavskii, S.; Pullen, H.; Raven, G.; Redi, F.; Reiss, F.; Richards, D. S.; Sanchez Gonzalo, D.; Sarpis, G.; Sazak, H.; Schneider, O.; Sellam, S.; Shen, Z.; Shmanin, E.; Skwarnicki, T.; Soares Lavra, L.; Solovev, A.; Souza De Paula, B.; Spaan, B.; Spradlin, P.; Stagni, F.; Steinkamp, O.; Sun, L.; Szabelski, A.; Tisserand, V.; Tobin, M.; Tully, A.; Usachov, A.; Valls Canudas, N.; van Veghel, M.; Voropaev, N.; Westhenry, B. D. C.; Xu, Z.; Yang, Y.; Zarebski, K. A.; Zhang, S.; Zhang, Y.; Zhelezov, A.

    The European physical journal. C, Particles and fields, 03/2021, Letnik: 81, Številka: 3
    Journal Article

    A search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately 3.0 fb - 1 of proton–proton collision data at centre-of-mass energies of 7 and 8 TeV collected with the LHCb experiment. Both same-sign and opposite-sign muons in the final state are considered. Data are found to be consistent with the expected background. Upper limits on the coupling of a heavy neutrino with the Standard Model neutrino are set at 95 % confidence level in the heavy-neutrino mass range from 5 to 50 GeV/ c 2 . These are of the order of 10 - 3 for lepton-number-conserving decays and of the order of 10 - 4 for lepton-number-violating heavy-neutrino decays.