Time-dependent CP asymmetries in D and B decays

Details Time-dependent CP asymmetries in D and B decays Time-dependent CP asymmetries in D and B decays

2011-06-24

arxiv.org/abs/1106.5075v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 7 figures, 3 tables

Scientific paper

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.

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