correspond to the parameters and . Using the values of the previous section for the CKM matrix, as of 2008 the best determination of the Wolfenstein parameter values is: = , = , = , and = . Nobel Prize In 2008, Kobayashi and Maskawa shared one half of the Nobel Prize in Physics "for the discovery of the origin of the broken symmetry which predicts the existence of at least three families of quarks in nature". Some physicists were reported to harbor bitter feelings about the fact that the Nobel Prize committee failed to reward the work of Cabibbo, whose prior work was closely related to that of Kobayashi and Maskawa. Asked for a reaction on the prize, Cabibbo preferred to give no comment. See also Formulation of the Standard Model and CP violations Quantum chromodynamics, flavour and strong CP problem Weinberg angle, a similar angle for Z and photon mixing Pontecorvo–Maki–Nakagawa–Sakata matrix, the equivalent mixing matrix for neutrinos Koide formula References Further reading and external links at SLAC, California, and at KEK, Japan. Standard Model Electroweak theory Matrices