2026-04-14T02:52:38Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1318312025-12-05T16:42:41Zcom_2072_1057col_2072_478823col_2072_478904col_2072_478917

RECERCAT author Camboni, Alessandro author Comerma Montells, Albert author Garrido Beltrán, Lluís author Graciani Díaz, Ricardo author Graugés Pous, Eugeni author López Asamar, Elias author Pérez-Calero Yzquierdo, Antonio author Picatoste Olloqui, Eduardo author Potterat, Cédric author Rives Molina, Vicente José author Ruiz, Hugo (Ruiz Pérez) author Vázquez Gómez, Ricard author Abellan Beteta, Carlos author Calvo Gómez, Míriam author Oyanguren Campos, Arantza de author Ruiz Valls, Pablo author Vilasis-Cardona, Xavier author LHCb Collaboration 2019-04-08T13:35:43Z2019-04-08T13:35:43Z2013-04-012019-04-08T13:35:43Z A search for the decay B 0 s → D * ∓ π ± is presented using a data sample corresponding to an integrated luminosity of 1.0 fb − 1 of p p collisions collected by LHCb. This decay is expected to be mediated by a W -exchange diagram, with little contribution from rescattering processes, and therefore a measurement of the branching fraction will help us to understand the mechanism behind related decays such as B 0 s → π + π − and B 0 s → D ¯¯¯ D . Systematic uncertainties are minimized by using B 0 → D * ∓ π ± as a normalization channel. We find no evidence for a signal, and set an upper limit on the branching fraction of B ( B 0 s → D * ∓ π ± ) < 6.1 ( 7.8 ) × 10 − 6 at 90% (95%) confidence level. 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 Search for the decay Bs0→D*∓π± info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion