First study of the CP-violating phase and decay-width difference in Bs0 → ψ(2S)ϕ decays

First study of the CP-violating phase and decay-width difference in Bs0 → ψ(2S)ϕ decays

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...

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書目詳細資料
Main Authors: Cheung, S, Evans, T, Gandini, P, Gruberg Cazon, B, Hadavizadeh, T, Harnew, N, Hill, D, Jalocha, P, John, M, Lupton, O, Malde, S, Nandi, A, Topp-Joergenson, S, Wilkinson, G, LHCb Collaboration (755 others)
格式: Journal article
出版: Elsevier 2016
實物特徵
總結: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.

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