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Measurement of CP asymmetries in the decays B-0 -> K-*0 mu(+) mu(-) and B+ -> K+ mu(+) mu(-)

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Measurement of CP asymmetries in the decays B-0 -> K-*0 mu(+) mu(-) and B+ -> 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	2016-04-20T08:05:05Z
dc.date.available	2016-04-20T08:05:05Z
dc.date.issued	2014
dc.identifier.citation	LHCb Collaboration Martínez Vidal, Fernando Oyanguren Campos, Arantza Ruiz Valls, Pablo Sánchez Mayordomo, Carlos 2014 Measurement of CP asymmetries in the decays B-0 -> K-*0 mu(+) mu(-) and B+ -> K+ mu(+) mu(-) Journal Of High Energy Physics 09 09 177-1 177-18
dc.identifier.uri	http://hdl.handle.net/10550/52848
dc.description.abstract	The direct CP asymmetries of the decays B-0 -> K-0 mu(+) mu(-) and B+ -> K+ mu(+) mu(-) are measured using pp collision data corresponding to an integrated luminosity of 3.0 fb(-1) collected with the LHCb detector. The respective control modes B-0 -> J/psi K+ and B+ -> J/psi K+ are used to account for detection and production asymmetries. The measurements are made in several intervals of mu(+)mu(-) invariant mass squared, with the phi(1020) and charmonium resonance regions excluded. Under the hypothesis of zero CP asymmetry in the control modes, the average values of the asymmetries are A(CP)(B-0 -> K-0 mu(+) mu(-) and B+ -> K+ mu(+) mu(-)) = -0.035 +/- 0.024 +/- 0.003, A(CP)(B+ -> K+ mu(+) mu(-) = 0.012 +/- 0.017 +/- 0.001, where the first uncertainties are statistical and the second are due to systematic effects. Both measurements are consistent with the Standard Model prediction of small CP asymmetry in these decays.
dc.language.iso	eng
dc.relation.ispartof	Journal Of High Energy Physics, 2014, vol. 09, num. 09, p. 177-1-177-18
dc.subject	Física nuclear
dc.title	Measurement of CP asymmetries in the decays B-0 -> K-*0 mu(+) mu(-) and B+ -> K+ mu(+) mu(-)
dc.type	journal article	es_ES
dc.date.updated	2016-04-20T08:05:05Z
dc.identifier.doi	10.1007/JHEP09(2014)177
dc.identifier.idgrec	101795
dc.rights.accessRights	open access	es_ES