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arXiv · 1207.6390

Nonleptonic Charm Decays and CP Violation

Bhubanjyoti Bhattacharya·Michael Gronau·Jonathan L. Rosner
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Abstract

In this talk we briefly present a flavor-SU(3) technique to study branching ratios and direct CP asymmetries $D$-meson decays. The first part of the talk is meant to set up a foundation, based on previous work, to deal with flavor-SU(3) amplitudes and relative strong phases. In addition, we present a model for dealing with SU(3)-breaking in branching ratio measurements of SCS $D^0$ decays. In the second part of the talk we make use of a proposal for an enhanced CP-violating penguin in the SM, to explain the recent LHCb and CDF observations of CP violation in SCS $D^0$ decays. Furthermore, we use our model to predict CP violation in $π^0π^0$ and $K^+\bar{K}^0$ final states. Large experimental bounds on individual CP asymmetries give rise to a large allowed range of $δ$, the strong phase of the CP-violating penguin. We also briefly discuss future prospects.

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Bhubanjyoti Bhattacharya, Michael Gronau, Jonathan L. Rosner. 2012-08-05. Nonleptonic Charm Decays and CP Violation. https://arxiv.org/abs/1207.6390

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