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Résumé |
The CKM angle $\gamma$ is the least well known constraint of the $B^0$ unitarity triangle and is a vital measurement for understanding CP violation in the Standard Model. Any inconsistency between direct and indirect determination of $\gamma$ would be a clear sign of new physics. It can be accessed by, theoretically clean, tree level decays of $B^+ \to D^0 K^+$ and $B^+ \to \overline{D}^0 K^+$, where the $D^0$ and $\overline{D}^0$ decay to the same final state. An updated combination of several LHCb measurements is presented for which $\gamma$ is found to be $(70.9 ^{+7.1} _{-8.5})$ degrees. This is the most precise single-experiment measurement of $\gamma$ to date. |
