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arXiv · 1106.5075

Time-dependent CP asymmetries in D and B decays

Adrian Bevan·Gianluca Inguglia·Brian Meadows
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Abstract

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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Adrian Bevan, Gianluca Inguglia, Brian Meadows. 2011-06-24. Time-dependent CP asymmetries in D and B decays. https://doi.org/10.1103/physrevd.84.114009

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