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oai:recercat.cat:2445/1864142025-12-05T16:43:04Zcom_2072_1057col_2072_478823col_2072_478917

urn:hdl:2445/186414 Observation of the Λb0→Λφ decay Badalov, A. Garrido Beltrán, Lluís Gascón Fora, David Graciani Diaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José LHCb Collaboration Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments The Λ0 b → Λφ decay is observed using data corresponding to an integrated luminosity of 3.0 fb−1 recorded by the LHCb experiment. The decay proceeds at leading order via a b → sss loop transition and is therefore sensitive to the possible presence of particles beyond the Standard Model. A first observation is reported with a significance of 5.9 standard deviations. The value of the branching fraction is measured to be (5.18 ± 1.04 ± 0.35 +0.67 −0.62) × 10−6, where the first uncertainty is statistical, the second is systematic, and the third is related to external inputs. Triple-product asymmetries are measured to be consistent with zero. 2022-06-07T14:17:27Z 2022-06-07T14:17:27Z 2016 2022-06-07T14:17:27Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Reproducció del document publicat a: https://doi.org/10.1016/j.physletb.2016.05.077 Physics Letters B, 2016, vol. 759, p. 282-292 https://doi.org/10.1016/j.physletb.2016.05.077 cc-by (c) Badalov, A. et al., 2016 https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Elsevier B.V. Articles publicats en revistes (Física Quàntica i Astrofísica)