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Search for B -> K-(*()) v(v)over-bar and invisible quarkonium decays

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Search for B -> K-(*()) v(v)over-bar and invisible quarkonium decays

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dc.contributor.author BABAR Collaboration
dc.contributor.author Martínez Vidal, Fernando
dc.contributor.author Oyanguren Campos, Arantza
dc.contributor.author Villanueva Pérez, Pablo
dc.date.accessioned 2014-04-01T11:45:53Z
dc.date.available 2014-04-01T11:45:53Z
dc.date.issued 2013
dc.identifier.citation BABAR Collaboration Martínez Vidal, Fernando Oyanguren Campos, Arantza Villanueva Pérez, Pablo 2013 Search for B -> K-(*()) v(v)over-bar and invisible quarkonium decays Physical Review D 87 11 112005-1 112005-13
dc.identifier.uri http://hdl.handle.net/10550/33945
dc.description.abstract We search for the flavor-changing neutral-current decays B -> K-(*()) v (v) over bar, and the invisible decays J/psi -> v (v) over bar and psi(2S) -> v (v) over bar via B -> K-(*())J/psi and B -> K-(*()) psi(2S), respectively, using a data sample of 471 x 10(6) B (B) over bar pairs collected by the BABAR experiment. We fully reconstruct the hadronBic decay of one of the B mesons in the Y(4S) -> B (B) over bar decay, and search for the B -> K-(*()) v (v) over bar decay in the rest of the event. We observe no significant excess of signal decays over background and report branching fraction upper limits of B(B+ -> K+ v (v) over bar) < 3.7 x 10(-5), B(B-0 -> K-0 v<(v)over bar>) < 8.1 x 10(-5), B(B+ -> K*(+) v<(v)over bar>) < 11.6 x 10(-5), B(B-0 -> K*(0) v<(v)over bar>), < 9.3 x 10(-5), and combined upper limits of B(B -> K v<(v)over bar>) < 3.2 x 10(-5) and B(B -> K* v<(v)over bar>) < 7.9 x 10(-5), all at the 90% confidence level. For the invisible quarkonium decays, we report branching fraction upper limits of B(J/psi -> v<(v)over bar>) < 3.9 x 10(-3) and B(psi(2S) -> v<(v)over bar> < 15.5 x 10(-3) at the 90% confidence level. Using the improved kinematic resolution achieved from hadronic reconstruction, we also provide partial branching fraction limits for the B -> K-(*()) v<(v)over bar> decays over the full kinematic spectrum.
dc.relation.ispartof Physical Review D, 2013, vol. 87, num. 11, p. 112005-1-112005-13
dc.subject Física nuclear
dc.title Search for B -> K-(*()) v(v)over-bar and invisible quarkonium decays
dc.type journal article es_ES
dc.date.updated 2014-04-01T11:45:53Z
dc.identifier.doi 10.1103/PhysRevD.87.112005
dc.identifier.idgrec 091109
dc.rights.accessRights open access es_ES
dc.identifier.url 10.1103/PhysRevD.87.112005

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