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Observation of the Bs0 → J/ψϕϕ decay

Aaij, R; Adeva, B; Adinolfi, M; Affolder, A; Ajaltouni, Z; Akar, S; Albrecht, J; ... Collaboration, L; + view all (2016) Observation of the Bs0 → J/ψϕϕ decay. Journal of High Energy Physics , 2016 (3) , Article 40. 10.1007/JHEP03(2016)040. Green open access

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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.

Type: Article
Title: Observation of the Bs0 → J/ψϕϕ decay
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/JHEP03(2016)040
Publisher version: http://dx.doi.org/10.1007/JHEP03(2016)040
Language: English
Additional information: Copyright © The Author(s), 2016. All rights reserved. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Keywords: B physics, Branching fraction, Hadron-Hadron scattering, QCD, Spectroscopy
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office
URI: https://discovery.ucl.ac.uk/id/eprint/1489739
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