2026-04-17T02:56:55Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/2206382025-12-05T16:15:47Zcom_2072_1057col_2072_478823col_2072_478904col_2072_478917

00925njm 22002777a 4500 dc Aaij, R. author Alfonso Albero, Alejandro author Comerma-Montells, A. author Garcia Moreno, Paula author Garrido Beltrán, Lluís author Gironella Gironell, Pere author Gomez Fernandez, S. author Graugés Pous, Eugeni author Lobo Salvia, Aniol author López Huertas, Albert author Manera Escalero, Rafel author Marin Benito, Carla author Mauricio, J. author Vazquez Gomez, Ricardo author LHCb collaboration author 2025-04-25T14:17:08Z 2025-04-25T14:17:08Z 2023 2025-04-25T14:17:08Z The CP asymmetries of seven B− decays to two charm mesons are measured using data corresponding to an integrated luminosity of 9 fb−1 of proton-proton collisions collected by the LHCb experiment. Decays involving a D∗0 or D∗− s meson are analysed by reconstructing only the D0 or D− s decay products. This paper presents the frst measurement of ACP (B− → D∗− s D0 ) and ACP (B− → D− s D∗0 ), and the most precise measurement of the other fve CP asymmetries. There is no evidence of CP violation in any of the analysed decays. Additionally, two ratios between branching fractions of selected decays are measured. Hadrons Física de partícules Hadrons Particle physics Measurement of CP asymmetries and branching fraction ratios of B− decays to two charm mesons