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Title: Observation of the Λb0→Λφ decay
Author: Badalov, A.
Garrido Beltrán, Lluís
Gascón Fora, David
Graciani Diaz, Ricardo
Graugés Pous, Eugeni
Marin Benito, Carla
Picatoste Olloqui, E.
Rives, V.
LHCb Collaboration
Keywords: Hadrons
Gran Col·lisionador d'Hadrons
Física de partícules
Large Hadron Collider (France and Switzerland)
Particle physics
Issue Date: 2016
Publisher: Elsevier B.V.
Abstract: 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.
Note: Reproducció del document publicat a:
It is part of: Physics Letters B, 2016, vol. 759, p. 282-292
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ISSN: 0370-2693
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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