CERN Accelerating science

Preprint
Report number	arXiv:2409.06449
Title	Global analysis of charm mixing parameters and determination of the CKM angle $\gamma$
Author(s)	Betti, F. (U. Edinburgh (main)) ; Bona, M. (Queen Mary, U. of London) ; Ciuchini, M. (INFN, Rome3) ; Derkach, D. (Higher Sch. of Economics, Moscow) ; Di Palma, R. (INFN, Rome3 ; Rome III U.) ; Kagan, A.L. (Cincinnati U.) ; Lubicz, V. (INFN, Rome3 ; Rome III U.) ; Martinelli, G. (INFN, Rome) ; Pierini, M. (CERN) ; Silvestrini, L. (INFN, Rome) ; Tarantino, C. (INFN, Rome3 ; Rome III U.) ; Vagnoni, V. (INFN, Bologna) Vis alle 12 forfattere
Imprint	2024-09-10
Number of pages	21
Note	v2
Subject category	hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology
Abstract	We present an updated global analysis of beauty decays sensitive to the angle $\gamma$ 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 $\gamma$. The results for the charm mixing parameters are $x_{12} \simeq x = (0.402 \pm 0.044)\%$ and $y_{12} \simeq y = (0.627 \pm 0.021)\%$, while the two CP-violating phases are given by $\varphi_2^M = (1.9 \pm 1.6)^{\circ}$ and $\varphi_2^{\Gamma} = (2.7 \pm 1.6)^{\circ}$. The angle $\gamma$ is found to be $\gamma = (66.0 \pm 2.5)^{\circ}$.
Other source	Inspire
Copyright/License	preprint: (License: CC0 1.0)