Mixing and time-dependent CP violation in beauty at LHCb

TL;DR

This paper reports measurements of time-dependent CP violation in B_s^0 meson decays using LHCb data, providing insights into matter-antimatter asymmetry with results from 1.9 fb^{-1} of proton-proton collisions at 13 TeV.

Contribution

It presents new measurements of CP-violating parameters in B_s^0 decays at LHCb, utilizing data from 2015-2016 to improve understanding of CP violation in the beauty sector.

Findings

Measured CP-violating parameters in B_s^0 decays.

Provided constraints on the Standard Model predictions.

Enhanced precision over previous measurements.

Abstract

Recent measurements of the time-dependent CP violation are presented. The decays of $B_{s}^{0}$ mesons to $J/\psi\,K^+ K^-$ and $J/\psi\,\pi^+ \pi^-$ final states are used to measure CP-violating parameters with proton-proton collision data, corresponding to an integrated luminosity of 1.9 fb$^{-1}$, collected by the LHCb detector at a centre-of-mass energy of 13 TeV in 2015 and 2016.