NAGIOS: RODERIC FUNCIONANDO

Evidence of B+ -> tau(+)nu decays with hadronic B tags

Repositori DSpace/Manakin

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Evidence of B+ -> tau(+)nu decays with hadronic B tags

Mostra el registre parcial de l'element

dc.contributor.author BABAR Collaboration
dc.contributor.author Martínez Vidal, Fernando
dc.contributor.author Oyanguren Campos, Arantza
dc.date.accessioned 2014-04-01T11:34:46Z
dc.date.available 2014-04-01T11:34:46Z
dc.date.issued 2013
dc.identifier.citation BABAR Collaboration Martínez Vidal, Fernando Oyanguren Campos, Arantza 2013 Evidence of B+ -> tau(+)nu decays with hadronic B tags Physical Review D 88 3 031102-1 031102-9
dc.identifier.uri http://hdl.handle.net/10550/33937
dc.description.abstract We present a search for the decay B+ -> tau(+)nu using 467.8 x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the BABAR detector at the SLAC PEP-II B-Factory. We select a sample of events with one completely reconstructed B- in the hadronic decay mode (B- -> D-(*X-)0(-) and B- -> J/psi X-). We examine the rest of the event to search for a B+ -> tau(+)nu decay. We identify the tau(+) lepton in the following modes: tau(+) -> e(+)nu(nu) over bar, tau(+) -> mu(+)nu(nu) over bar, tau(+) -> pi(+)(nu) over bar and tau(+) -> rho(+)(nu) over bar. We find an excess of events with respect to the expected background, which excludes the null signal hypothesis at the level of 3.8 sigma (including systematic uncertainties) and corresponds to a branching fraction value of B(B+ -> tau(+)nu) = (1.83(-0.49)(+0.53)(stat) +/- 0.24(syst)) x 10(-4).
dc.relation.ispartof Physical Review D, 2013, vol. 88, num. 3, p. 031102-1-031102-9
dc.subject Física nuclear
dc.title Evidence of B+ -> tau(+)nu decays with hadronic B tags
dc.type journal article es_ES
dc.date.updated 2014-04-01T11:34:46Z
dc.identifier.doi 10.1103/PhysRevD.88.031102
dc.identifier.idgrec 091102
dc.rights.accessRights open access es_ES
dc.identifier.url 10.1103/PhysRevD.88.031102

Visualització       (1.278Mb)

Aquest element apareix en la col·lecció o col·leccions següent(s)

Mostra el registre parcial de l'element

Cerca a RODERIC

Cerca avançada

Visualitza

Estadístiques