Mostra el registre parcial de l'element
dc.contributor.author | LHCb Collaboration | |
dc.contributor.author | Oyanguren Campos, Arantza | |
dc.contributor.author | Ruiz Valls, Pablo | |
dc.date.accessioned | 2014-03-31T13:05:20Z | |
dc.date.available | 2014-03-31T13:05:20Z | |
dc.date.issued | 2013 | |
dc.identifier.citation | LHCb Collaboration Oyanguren Campos, Arantza Ruiz Valls, Pablo 2013 Observation of B-c(+) -> J/ psi D-s(+) and B-c(+) -> J/ psi D-s*(+) decays Physical Review D 87 11 112012-1 112012-10 | |
dc.identifier.uri | http://hdl.handle.net/10550/33877 | |
dc.description.abstract | The decays B-c(+) -> J/ psi D-s(+) and B-c(+) -> J/ psi D-s*(+) are observed for the first time using a dataset, corresponding to an integrated luminosity of 3 fb(-1), collected by the LHCb experiment in proton-proton collisions at center-of-mass energies of root s = 7 and 8 TeV. The statistical significance for both signals is in excess of 9 standard deviations. The following ratios of branching fractions are measured to be 'B(B-c(+) -> J/ psi D-s(+))/B(B-c(+) -> J/ psi pi(+)) = 2.90 +/- 0.57 +/- 0.24, B(B-c(+) -> J/psi D-s*(+))/B(B-c(+) -> J/ psi D-s(+)) = 2.37 +/- 0.56 +/- 0.10, where the first uncertainties are statistical and the second systematic. The mass of the B-c(+) meson is measured to be m(Bc+) = 6276.28 +/- 1.44(stat) +/- 0.36(syst) MeV/c(2), using the B-c(+) -> J/ psi D-s(+) decay mode. | |
dc.relation.ispartof | Physical Review D, 2013, vol. 87, num. 11, p. 112012-1-112012-10 | |
dc.subject | Física nuclear | |
dc.subject | Partícules (Física nuclear) | |
dc.title | Observation of B-c(+) -> J/ psi D-s(+) and B-c(+) -> J/ psi D-s*(+) decays | |
dc.type | journal article | es_ES |
dc.date.updated | 2014-03-31T13:05:20Z | |
dc.identifier.doi | 10.1103/PhysRevD.87.112012 | |
dc.identifier.idgrec | 094073 | |
dc.rights.accessRights | open access | es_ES |
dc.identifier.url | 10.1103/PhysRevD.87.112012 |