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Title: | First Observation of a Baryonic B+c Decay |
Author: | Badalov, Alexey Calvo Gómez, Míriam Garrido Beltrán, Lluís Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Ruiz, Hugo (Ruiz Pérez) Vilasis-Cardona, Xavier LHCb Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 10-Oct-2014 |
Publisher: | American Physical Society |
Abstract: | A baryonic decay of the B + c meson, B + c → J / ψ p ¯ p π + , is observed for the first time, with a significance of 7.3 standard deviations, in p p collision data collected with the LHCb detector and corresponding to an integrated luminosity of 3.0 fb − 1 taken at center-of-mass energies of 7 and 8 TeV. With the B + c → J / ψ π + decay as the normalization channel, the ratio of branching fractions is measured to be B ( B + c → J / ψ p ¯ p π + ) / B ( B + c → J / ψ π + ) = 0.14 3 + 0.039 − 0.034 ( stat ) ± 0.013 ( syst ) . The mass of the B + c meson is determined as M ( B + c ) = 6274.0 ± 1.8 ( stat ) ± 0.4 ( syst ) MeV / c 2 , using the B + c → J / ψ p ¯ p π + channel. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.113.152003 |
It is part of: | Physical Review Letters, 2014, vol. 113, num. 15, p. 152003 |
URI: | http://hdl.handle.net/2445/133200 |
Related resource: | https://doi.org/10.1103/PhysRevLett.113.152003 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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