2026-04-13T07:27:05Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1332682025-12-05T16:39:39Zcom_2072_1057col_2072_478823col_2072_478904col_2072_478917

RECERCAT author Calvo Gómez, Míriam author Camboni, Alessandro author Comerma Montells, Albert author Garrido Beltrán, Lluís author Graciani Díaz, Ricardo author Graugés Pous, Eugeni author Oyanguren Campos, Arantza de author Pérez-Calero Yzquierdo, Antonio author Picatoste Olloqui, Eduardo author Potterat, Cédric author Rives Molina, Vicente José author Ruiz, Hugo (Ruiz Pérez) author Ruiz Valls, Pablo author Vilasis-Cardona, Xavier author LHCb Collaboration 2019-05-16T10:53:04Z2019-05-16T10:53:04Z2013-11-042019-05-16T10:53:04Z We present a measurement of form-factor-independent angular observables in the decay B 0 → K ∗ ( 892 ) 0 μ + μ − . The analysis is based on a data sample corresponding to an integrated luminosity of 1.0 fb − 1 , collected by the LHCb experiment in p p collisions at a center-of-mass energy of 7 TeV. Four observables are measured in six bins of the dimuon invariant mass squared q 2 in the range 0.1 < q 2 < 19.0 GeV 2 / c 4 . Agreement with recent theoretical predictions of the standard model is found for 23 of the 24 measurements. A local discrepancy, corresponding to 3.7 Gaussian standard deviations is observed in one q 2 bin for one of the observables. Considering the 24 measurements as independent, the probability to observe such a discrepancy, or larger, in one is 0.5%. cc by (c) CERN; LHCb Collaboration, 2013 http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Física de partícules Experiments Particle physics Experiments Measurement of Form-Factor-Independent Observables in the Decay B0→K*0μ+μ− info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion