2026-04-17T11:25:41Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/2206012025-12-05T16:16:45Zcom_2072_1057col_2072_478823col_2072_478904col_2072_478917

00925njm 22002777a 4500 dc Aaij, R. author Alfonso Albero, Alejandro 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 2025-04-25T07:33:48Z 2025-04-25T07:33:48Z 2023 2025-04-25T07:33:48Z The first observation of the Λ 0 b → D− s p decay is presented using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of √ s = 13 TeV, corresponding to a total integrated luminosity of 6 fb−1 . Using the Λ 0 b → Λ + c π − decay as the normalisation mode, the branching fraction of the Λ 0 b → D− s p decay is measured to be B(Λ 0 b → D− s p) = (12.6 ± 0.5 ± 0.3 ± 1.2) × 10−6 , where the first uncertainty is statistical, the second systematic and the third due to uncertainties in the branching fractions of the Λ 0 b → Λ + c π −, D− s → K−K+π − and Λ + c → pK−π + decays.  Hadrons Física de partícules Hadrons Particle physics First observation and branching fraction measurement of the Λb0→Ds−p decay