Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/162199
Title: First observation of the radiative decay Λb0 → Λγ
Author: LHCb Collaboration
Alfonso Albero, Alejandro
Calvo Gómez, Míriam
Camboni, Alessandro
Coquereau, Samuel
Garrido Beltrán, Lluís
Gascón Fora, David
Gironella Gironell, P.
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Vilasis-Cardona, Xavier
Keywords: Física de partícules
Experiments
Particle physics
Experiments
Issue Date: 15-Jul-2019
Publisher: American Physical Society
Abstract: The radiative decay Λb0→Λγ is observed for the first time using a data sample of proton-proton collisions corresponding to an integrated luminosity of 1.7 fb-1 collected by the LHCb experiment at a center-of-mass energy of 13 TeV. Its branching fraction is measured exploiting the B0→K∗0γ decay as a normalization mode and is found to be B(Λb0→Λγ)=(7.1±1.5±0.6±0.7)×10-6, where the quoted uncertainties are statistical, systematic, and systematic from external inputs, respectively. This is the first observation of a radiative decay of a beauty baryon.
Note: Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.123.031801
It is part of: Physical Review Letters, 2019, vol. 123, num. 3, p. 031801-031801
URI: http://hdl.handle.net/2445/162199
Related resource: https://doi.org/10.1103/PhysRevLett.123.031801
ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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