Direct CP Violation in Nonleptonic Charm Decays

Abstract

LHCb, CDF and most recently Belle have observed a large difference between direct CP asymmetries in $D^0\to K^{+}{K}^{-}$ and $D^0\to {\pi }^{+}{\pi }^{-}$. We use the measured value of $\Delta A_{CP}$ to constrain the magnitude and strong phase of a QCD-enhanced standard model penguin and predict its effects on direct CP asymmetry in $D^0\to {\pi }^0{\pi }^0$ and $D^{+}\to K^{+}{\bar{K}}^0$.

Proceedings of CKM 2012, the 7th International Workshop on the CKM Unitarity Triangle, University of Cincinnati, USA, 28 September - 2 October 2012. (Minor corrections to text in this version)

References in corpus (6)

• CP asymmetries in singly-Cabibbo-suppressed $D$ decays to two pseudoscalar mesons
• Measurement of CP--violating asymmetries in D0 --> pi+ pi- and D0 --> K+K- decays at CDF
• Charmed meson decays to two pseudoscalars
• Direct CP Violation in D Decays in view of LHCb and CDF Results
• CP violation and mixing in the charm sector at Belle, and current HFAG averages
• Nonleptonic Charm Decays and CP Violation