Thursday, December 23, 2010

Theory Update 25

Resonaances points us to an interesting new analysis of the CKM anomalies. The paper argues that the parameter $\sin 2 \beta$ is given by a non standard value, below the one obtained with an ordinary parameterisation. Previously here we have not bothered looking at this value, which is distinct from the $\beta_s$ case, but checking now the complex matrix we find a value of $\sin 2 \beta$ equal to $0.649$. This agrees with the non standard preferred value, measured at $0.668 \pm 0.023$. Recall that the arithmetic mixing matrix uses only three real parameters to determine the physical quantities of the CKM matrix.