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arXiv · 1201.2565

LHCb $\bigtriangleup A_{CP}$ of $D$ meson and R-Parity Violation

Xue Chang·Ming-Kai Du·Chun Liu·Jia-Shu Lu·Shuo Yang
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Abstract

LHCb collaboration has recently announced a measurement of the difference of time-integrated CP asymmetries between $D\rightarrow K^+K^-$ and $D \rightarrow π^+π^-$. This result provides the evidence of large direct CP violation in $D$ meson and reveals some important implications on underlying new physics. It is shown that the direct CP violation in $D$ meson can be enhanced by R-parity violating supersymmetry, while CP violations in $K$ and $B$ mesons are suppressed by this new physics, which is in consistence with previous experiments. Constraints on the model parameters and some consequences are also discussed.

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Xue Chang, Ming-Kai Du, Chun Liu, Jia-Shu Lu, Shuo Yang. 2012-01-12. LHCb $\bigtriangleup A_{CP}$ of $D$ meson and R-Parity Violation. https://arxiv.org/abs/1201.2565

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