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First observations of the rare decays B (+) -> K (+)pi (+)pi (-)mu(+)mu (-) and B (+)-> phi K (+)mu(+)mu (-)

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First observations of the rare decays B (+) -> K (+)pi (+)pi (-)mu(+)mu (-) and B (+)-> phi K (+)mu(+)mu (-)

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dc.contributor.author	LHCb Collaboration
dc.contributor.author	Martínez Vidal, Fernando
dc.contributor.author	Oyanguren Campos, Arantza
dc.contributor.author	Ruiz Valls, Pablo
dc.contributor.author	Sánchez Mayordomo, Carlos
dc.date.accessioned	2016-04-20T10:27:38Z
dc.date.available	2016-04-20T10:27:38Z
dc.date.issued	2014
dc.identifier.citation	LHCb Collaboration Martínez Vidal, Fernando Oyanguren Campos, Arantza Ruiz Valls, Pablo Sánchez Mayordomo, Carlos 2014 First observations of the rare decays B (+) -> K (+)pi (+)pi (-)mu(+)mu (-) and B (+)-> phi K (+)mu(+)mu (-) Journal Of High Energy Physics 10 10 064-1 064-18
dc.identifier.uri	http://hdl.handle.net/10550/52890
dc.description.abstract	First observations of the rare decays B (+) -> K (+)pi (+) pi (-) μ(+) μ(-) and B (+)-> phi K+ mu(+)mu(-) are presented using data corresponding to an integrated luminosity of 3.0 fb(-1), collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The branching fractions of the decays are B(B (+) -> K (+)pi (+) pi (-) μ(+) μ(-) ) = (4.36 (-0.27) (+0.29) (stat) +/- 0.21 (syst) +/- (norm)) x 10(-7), B(B (+)-> phi K+ mu(+)mu(-)) = (0.82 (+0.19)(-0.17) (stat) (+0.10)(-0.04) (syst) +/- 0.27 (norm)) x 10(-7) where the uncertainties are statistical, systematic, and due to the uncertainty on the branching fractions of the normalisation modes. A measurement of the differential branching fraction in bins of the invariant mass squared of the dimuon system is also presented for the decay B (+) -> K (+)pi (+) pi (-) μ(+) μ(-).
dc.language.iso	eng
dc.relation.ispartof	Journal Of High Energy Physics, 2014, vol. 10, num. 10, p. 064-1-064-18
dc.subject	Física nuclear
dc.title	First observations of the rare decays B (+) -> K (+)pi (+)pi (-)mu(+)mu (-) and B (+)-> phi K (+)mu(+)mu (-)
dc.type	journal article	es_ES
dc.date.updated	2016-04-20T10:27:39Z
dc.identifier.doi	10.1007/JHEP10(2014)064
dc.identifier.idgrec	101790
dc.rights.accessRights	open access	es_ES