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

Abstract

LHCb collaboration has recently announced a measurement of the difference of time-integrated CP asymmetries between $D\to K^{+}{K}^{-}$ and $D\to {\pi }^{+}{\pi }^{-}$. 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.

9 pages, 2 figures

Cited by in corpus (4)

• On Partial Compositeness and the CP asymmetry in charm decays
• Brief Review of Charm Physics
• Direct CP Violation in D -> hh Decays
• A search for time-integrated CP violation in D0 -> h- h+ decays