Measurement of the CP-violating phase ? s in B ¯ s 0 ? J / ? p + p - decays
Measurement of the CP-violating phase ? s in B ¯ s 0 ? J / ? p + p - decays
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CP 破坏相的测量 ?
DOI:
10.1016/j.physletb.2012.06.032
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发表时间:
2012
影响因子:
4.4
通讯作者:
Aaij R
中科院分区:
文献类型:
--
作者:
Aaij R
Measurement of the mixing-induced CP-violating phase ϕs in decays is of prime importance in probing new physics. Here 7421±105 signal events from the dominantly CP-odd final state J/ψπ+π− are selected in 1 fb−1 of pp collision data collected at with the LHCb detector. A time-dependent fit to the data yields a value of , consistent with the Standard Model expectation. No evidence of direct CP violation is found.