Time-dependent $CP$ asymmetries in $D$ and $B$ decays
Time-dependent $CP$ asymmetries in $D$ and $B$ decays
复制标题
$D$ 和 $B$ 中随时间变化的 $CP$ 不对称性衰减
DOI:
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发表时间:
2011
期刊:
影响因子:
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通讯作者:
B. Meadows
中科院分区:
文献类型:
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作者:
A. Bevan;G. Inguglia;B. Meadows
The measurement of time-dependent CP asymmetries in charm decays can provide a unique insight into the flavor changing structure of the Standard Model. We examine a number of different CP eigenstate decays of D mesons and describe a method that can be used to measure time-dependent CP asymmetries at existing and future experiments, with a preliminary assessment, based on statistical considerations, of their various capabilities. Any asymmetry observed in time-dependent analysis of neutral D mesons could signify new physics. We discuss the measurements required to perform direct and indirect tests of the charm unitarity triangle and the relationship between this and the B_d unitarity triangle.
We also highlight that current experimental bounds on DeltaGamma(B_d) translate into a significant systematic uncertainty on the measurement of beta from b to c c-bar s decays.