2026-04-13T04:54:58Zhttps://recercat.cat/oai/request

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

urn:hdl:2445/220601 First observation and branching fraction measurement of the Λb0→Ds−p decay Aaij, R. Alfonso Albero, Alejandro Garcia Moreno, Paula Garrido Beltrán, Lluís Gironella Gironell, Pere Gomez Fernandez, S. Graugés Pous, Eugeni Lobo Salvia, Aniol López Huertas, Albert Manera Escalero, Rafel Marin Benito, Carla Mauricio, J. Vazquez Gomez, Ricardo LHCb Collaboration Hadrons Física de partícules Hadrons Particle physics 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.  2025-04-25T07:33:48Z 2025-04-25T07:33:48Z 2023 2025-04-25T07:33:48Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Reproducció del document publicat a: https://doi.org/10.1007/JHEP07(2023)075 Journal of High Energy Physics, 2023, vol. 2023, num.75 https://doi.org/10.1007/JHEP07(2023)075 cc-by (c) Aaij, R. et al., 2023 http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Springer Verlag Articles publicats en revistes (Física Quàntica i Astrofísica)