Observation of B-c(+) -> J/psi D-(()) K-(()) decays

Observation of B-c(+) -> J/psi D-(()) K-(()) decays

A search for the decays B-c(+) -> J/psi D-(*()0) Kappa(+) and B-c(+) -> J/psi D-(*K)+*(0) is performed with data collected at the LHCb experiment corresponding to an integrated luminosity of 3 fb(-1). The decays B-c(+) -> J/psi(DK+)-K-0 and B-c(+) -> J/psi D*K-0(+) are observed for the f...

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Hauptverfasser: Akar, S, Aslanides, E, Bachmann, S, Baldini, W, Barschel, C, Barsuk, S, Baszczyk, M, Bernet, R, Bertolin, A, Bifani, S, Billoir, P, Birnkraut, A, Blanc, F, Bonivento, W, Calvo Gomez, M, Clemencic, M, Corti, G, Crocombe, A, De Cian, M, Del Buono, L, Dendek, A, Dreimanis, K, Dufour, L, Durante, P, Dziurda, A, Easo, S, Eitschberger, U, Eklund, L, Evans, H. M, Evans, T, Falabella, A, Ferguson, D, Fernandez Prieto, A, Gambetta, S, Gao, Y, Garcia Pardinas, J, Gascon, D, Gazzoni, G, Gersabeck, M, Gershon, T, Gligorov, V. V, Gotti, C, Cazon, B. R. Gruberg, Guz, Yu, Gobel, C, Haefeli, G, Hatch, M, Heister, A, Henrard, P, Henry, L, Hess, M, Hopchev, H, Ilten, P, Jawahery, A, Jiang, F, Jones, C. R, Joram, C, Karacson, M, Kreplin, K, Lazzeroni, C, Lionetto, F, Luo, H, Mancinelli, G, Marin Benito, C, Martin, M, Massacrier, L. M, Mauri, A, Maurin, B, Mccann, M, Merli, A, Michielin, E, Molina Rodriguez, J, Monteil, S, Mueller, V, Nakada, T, Otalora Goicochea, J. M, Palutan, M, Rih, M, Rodriguez Lopez, J. A, Schindler, H, Sciascia, B, Sestini, L, Shears, T, Simi, G, Souza De Paula, B, Sridharan, S, Straticiuc, M, Toumeur, S, Tsopelas, P, Valassi, A, Gomez, R. Vazquez, Viaud, B, Vieites Diaz, M, Voss, C, Wilkinson, G, Wislicki, W, Wotton, S. A, Yin, H, Yu, J, Zhukov, V
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Zusammenfassung:A search for the decays B-c(+) -> J/psi D-(*()0) Kappa(+) and B-c(+) -> J/psi D-(*K)+*(0) is performed with data collected at the LHCb experiment corresponding to an integrated luminosity of 3 fb(-1). The decays B-c(+) -> J/psi(DK+)-K-0 and B-c(+) -> J/psi D*K-0(+) are observed for the first time, while first evidence is reported for the B-c(broken vertical bar) -> J/psi D*K-broken vertical bar(*0) and B-c(broken vertical bar) -> J/psi(DK)-K-broken vertical bar*(0) decays. The branching fractions of these decays are determined relative to the B-c(+) -> J/psi pi(+) decay. The B-c(+) mass is measured, using the J/psi(DK+)-K-0 final state, to be 6274.28 +/- 1.40(stat) +/- 0.32(syst) MeV/c(2). This is the most precise single measurement of the B-c(+) mass to date.
DOI:10.1103/PhysRevD.95.032005