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Amplitude analysis of the B(s)0→K∗0K¯∗0 decays and measurement of the branching fraction of the B→ K∗ 0K¯ ∗ 0 decay

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dc.contributor.authorLHCb Collaboration
dc.contributor.authorAlfonso Albero, Alejandro
dc.contributor.authorCalvo Gómez, Míriam
dc.contributor.authorCamboni, Alessandro
dc.contributor.authorCoquereau, Samuel
dc.contributor.authorGarrido Beltrán, Lluís
dc.contributor.authorGascón Fora, David
dc.contributor.authorGironella Gironell, Pere
dc.contributor.authorGraciani Díaz, Ricardo
dc.contributor.authorGraugés Pous, Eugeni
dc.contributor.authorVilasis-Cardona, Xavier
dc.contributor.authorMarin Benito, Carla
dc.date.accessioned2020-05-25T13:24:23Z
dc.date.available2020-05-25T13:24:23Z
dc.date.issued2019-07-05
dc.date.updated2020-05-25T13:24:24Z
dc.description.abstractThe B0→K∗0K¯¯¯¯¯∗0 and B0s→K∗0K¯¯¯¯¯∗0 decays are studied using proton-proton collision data corresponding to an integrated luminosity of 3 fb−1. An untagged and timeintegrated amplitude analysis of B 0(s)  → (K+π−)(K−π+) decays in two-body invariant mass regions of 150 MeV/c2 around the K∗0 mass is performed. A stronger longitudinal polarisation fraction in the B0→K∗0K¯¯¯¯¯∗0 decay, fL = 0.724 ± 0.051 (stat) ± 0.016 (syst), is observed as compared to fL = 0.240 ± 0.031 (stat) ± 0.025 (syst) in the B0s→K∗0K¯¯¯¯¯∗0 decay. The ratio of branching fractions of the two decays is measured and used to determine B(B0→K∗0K¯¯¯¯¯∗0)=(8.0±0.9(stat)±0.4(syst))×10−7.
dc.format.mimetypeapplication/pdf
dc.identifier.idgrec696341
dc.identifier.issn1126-6708
dc.identifier.urihttps://hdl.handle.net/2445/162300
dc.language.isoeng
dc.publisherSpringer Verlag
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.1007/JHEP07(2019)032
dc.relation.ispartofJournal of High Energy Physics, 2019, p. 32
dc.relation.urihttps://doi.org/10.1007/JHEP07(2019)032
dc.rightscc-by (c) LHCb Collaboration et al., 2019
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)
dc.subject.classificationHadrons
dc.subject.classificationFísica de partícules
dc.subject.classificationExperiments
dc.subject.otherHadrons
dc.subject.otherParticle physics
dc.subject.otherExperiments
dc.titleAmplitude analysis of the B(s)0→K∗0K¯∗0 decays and measurement of the branching fraction of the B→ K∗ 0K¯ ∗ 0 decay
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion

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