Global analysis of charm mixing parameters and determination of the CKM angle gamma

Betti F.; Bona M.; Ciuchini M.; D. Derkach; Di Palma R.; Kagan A.; Lubicz V.; Martinelli G.; Pierini M.; Silvestrini L.; Tarantino C.; Vagnoni V.

doi:10.1103/pknz-r41n

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Global analysis of charm mixing parameters and determination of the CKM angle gamma

Physical Review D - Particles, Fields, Gravitation and Cosmology. 2025. Vol. 112. No. 1. Article 013004.

Betti F., Bona M., Ciuchini M., Derkach D., Di Palma R., Kagan A., Lubicz V., Martinelli G., Pierini M., Silvestrini L., Tarantino C., Vagnoni V.

We present an updated global analysis of beauty decays sensitive to the angle γ of the Cabibbo-Kobayashi-Maskawa matrix and of D-meson mixing data in the framework of approximate universality for charm mixing. We extract the fundamental theoretical parameters determining absorptive and dispersive contributions to D meson mixing and CP violation, together with the angle γ. The results for the charm mixing parameters are x12≃x=(0.402±0.044)% and y12≃y=(0.627±0.021)%, while the two CP-violating phases are given by φM2=(1.9±1.6)∘ and φΓ2=(2.7±1.6)∘. The angle γ is found to be γ=(66.0±2.5)∘.

Research target: Physics Computer Science

Keywords: тяжелые кварки CKM angle gamma CKM matrix Quarks ККМ матрица

Publication based on the results of:

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