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Title: | Observation of the Bs0→ J/ψϕϕ decay |
Author: | Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Badalov, Alexey LHCb Collaboration |
Keywords: | Interaccions d'hadrons Espectroscòpia Hadron interactions Spectrum analysis |
Issue Date: | 7-Mar-2016 |
Publisher: | Springer Verlag |
Abstract: | The B s 0 → J/ψϕϕ decay is observed in pp collision data corresponding to an integrated luminosity of 3 fb−1 recorded by the LHCb detector at centre-of-mass energies of 7 TeV and 8 TeV. This is the first observation of this decay channel, with a statistical significance of 15 standard deviations. The mass of the B s 0 meson is measured to be 5367.08 ± 0.38 ± 0.15 MeV/c2. The branching fraction ratio ℬ(B s 0 → J/ψϕϕ)/ℬ(B s 0 → J/ψϕ) is measured to be 0.0115 ± 0.0012 − 0.0009 + 0.0005 . In both cases, the first uncertainty is statistical and the second is systematic. No evidence for non-resonant B s 0 → J/ψϕK + K − or B s 0 → J/ψK + K − K + K − decays is found. |
Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP03(2016)040 |
It is part of: | Journal of High Energy Physics, 2016, vol. 2016, num. 40 |
URI: | http://hdl.handle.net/2445/119387 |
Related resource: | https://doi.org/10.1007/JHEP03(2016)040 |
ISSN: | 1126-6708 |
Appears in Collections: | Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) Articles publicats en revistes (Física Quàntica i Astrofísica) |
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