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Observation of the decay B+ → ψ(2S)ϕ(1020)K+ in pp collisions at s=8TeV
Journal article   Open access   Peer reviewed

Observation of the decay B+ → ψ(2S)ϕ(1020)K+ in pp collisions at s=8TeV

Vardan Khachatryan, Hugues Brun, Barbara Clerbaux, Hugo Delannoy, Giuseppe Fasanella, Laurent Favart, Reza Goldouzian, Anastasia Grebenyuk, Georgia Karapostoli, Thomas Lenzi, …
Physics letters. B, Vol.764, pp.66-86
01/01/2017
DOI: 10.1016/j.physletb.2016.11.001
url
https://doi.org/10.1016/j.physletb.2016.11.001View
Published (Version of record) Open Access

Abstract

The decay B+→ψ(2S)ϕ(1020)K+ is observed for the first time using data collected from pp collisions at s=8TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 19.6fb−1. The branching fraction of this decay is measured, using the mode B+→ψ(2S)K+ as normalization, to be (4.0±0.4(stat)±0.6(syst)±0.2(B))×10−6, where the third uncertainty is from the measured branching fraction of the normalization channel.
Physique des particules élémentaires

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