Measurement of the CP violation parameter \(A_{\Gamma}\) in \(D^{0} \rightarrow K^{+}K^{-}\) and \(D^{0} \rightarrow \pi^{+} \pi^{-}\) decays

  • Pietro MarinoEmail author
Regular Article


Asymmetries in the time-dependent rates of singly Cabibbo-suppressed \(D^{0}\rightarrow K^{+}K^{-}\) and \(D^{0}\rightarrow \pi^{+}\pi^{-}\) decays are measured in pp collision data sample collected with the LHCb detector during LHC Run 1, corresponding to an integrated luminosity of 3 fb-1. The asymmetries in effective decay widths between D0 and \(\overline{D}^{0}\) decays, sensitive to indirect CP violation, are measured. These measurements show no evidence for CP violation and improve on the precision of the previous best measurements by nearly a factor of two.


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Copyright information

© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Scuola Normale Superiore and INFNPisaItaly

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