On the difference of time-integrated $CP$ asymmetries in $D^0\to K^{+}{K}^{-}$ and $D^0\to {\pi }^{+}{\pi }^{-}$ decays: unparticle physics contribution

Abstract

The LHCb Collaboration has recently measured the difference of time-integrated $CP$ asymmetry in $D^0\to K^{+}{K}^{-}$ and $D^0\to {\pi }^{+}{\pi }^{-}$ decays, more precisely. The reported value is $\Delta A_{CP}=-0.10\pm 0.08(\text{stat})\pm 0.03(\text{syst})\%$ which indicates no evidence for $CP$ violation. We consider the possible unparticle physics contribution in this quantity and by using the LCHb data try to constrain the parameter space of unparticle stuff.

7 pages, 3 figures

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