First study of the CP-violating phase and decay-width difference in B<inf>s</inf><sup>0</sup>→ψ(2S)ϕ decays



Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G
et al (show 90 more authors) (2016) First study of the CP-violating phase and decay-width difference in B<inf>s</inf><sup>0</sup>→ψ(2S)ϕ decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 762. 253 - 262.

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Abstract

A time-dependent angular analysis of Bs0→ψ(2S)ϕ decays is performed using data recorded by the LHCb experiment. The data set corresponds to an integrated luminosity of 3.0fb−1 collected during Run 1 of the LHC. The CP-violating phase and decay-width difference of the Bs0 system are measured to be ϕs=0.23−0.28+0.29±0.02rad and ΔΓs=0.066−0.044+0.041±0.007ps−1, respectively, where the first uncertainty is statistical and the second systematic. This is the first time that ϕs and ΔΓs have been measured in a decay containing the ψ(2S) resonance.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 26 Oct 2016 15:46
Last Modified: 24 Oct 2021 07:14
DOI: 10.1016/j.physletb.2016.09.028
Open Access URL: https://arxiv.org/pdf/1608.04855v1.pdf
URI: https://livrepository.liverpool.ac.uk/id/eprint/3004135