Measurements of indirect CP asymmetries in D0 ? K- K+ and D0 ? p- p+ decays.
Measurements of indirect CP asymmetries in D0 ? K- K+ and D0 ? p- p+ decays.
复制标题
D0 中间接 CP 不对称性的测量?
DOI:
10.1103/physrevlett.112.041801
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发表时间:
2014
影响因子:
8.6
通讯作者:
Aaij R
中科院分区:
文献类型:
--
作者:
Aaij R
A study of indirectviolation inmesons through the determination of the parameteris presented using a data sample ofcollisions, corresponding to an integrated luminosity of, collected with the LHCb detector and recorded at the center-of-mass energy of 7 TeV at the LHC. The parameteris the asymmetry of the effective lifetimes measured in decays ofand D¯0 mesons to theeigenstatesand. Fits to the data sample yield AΓ(KK)=(−0.35±0.62±0.12)×10−3 and, where the first uncertainties are statistical and the second systematic. The results represent the world’s best measurements of these quantities. They show no difference inbetween the two final states and no indication ofviolation.