First study of the CP -violating phase and decay-width difference in B0s→ψ(2S)ϕBs0→ψ(2S)ϕ decaysстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 1 апреля 2017 г.
Аннотация:A time-dependent angular analysis of B0s→ψ(2S)ϕBs0→ψ(2S)ϕ decays is performed using data recorded by the LHCb experiment. The data set corresponds to an integrated luminosity of 3.0\invfb collected during Run 1 of the LHC. The CP-violating phase and decay-width difference of the B0sBs0 system are measured to be ϕs=0.23+0.29−0.28±0.02ϕs=0.23−0.28+0.29±0.02 rad and ΔΓs=0.066+0.041−0.044±0.007ΔΓs=0.066−0.044+0.041±0.007 ps−1−1, respectively, where the first uncertainty is statistical and the second systematic. This is the first time that ϕsϕs and ΔΓsΔΓs have been measured in a decay containing the ψ(2S)ψ(2S) resonance.