Simultaneous determination of the charm mixing and CP-violating parameters together with the CKM angle $\gamma$

Abstract

Recently, experiments have been testing the neutral 𝐷 meson system with increasing precision. Since 𝐷 0 − 𝐷 0 mixing occurs through Flavour Changing Neutral Currents, Standard Model amplitudes are absent at the tree level and suppressed at the loop level. Therefore, heavy New Physics coupled to the up-type quarks could manifest itself by modifying the small charm mixing and CP-violating parameters. We present a strategy to combine observables from the 𝐷 and 𝐵 meson systems within a Bayesian framework to determine simultaneously the charm mixing and CP-violating parameters and the CKM angle 𝛾. We check consistency between 𝛾 estimates obtained separating the beauty measurements according to the charge of the 𝐵 mesons. We obtain an updated determination of the dispersive and absorptive charm mixing parameters and the angle 𝛾.