Measurement of {\textit CP} observables in semileptonic decays at LHCb

TL;DR

This paper reports on measurements of CP violation in semileptonic B decays at LHCb, using large datasets to analyze asymmetries and the parameter a_{sl} in B0 and Bs systems, employing data-driven correction methods.

Contribution

It presents new measurements of CP violation parameters in B meson systems using LHCb data, with improved techniques to control detection asymmetries.

Findings

Measured CP asymmetries in B0 and Bs decays.

Provided constraints on the CP violation parameter a_{sl}.

Demonstrated data-driven methods to reduce detection bias.

Abstract

LHCb has recorded large samples of semileptonic {\textit B} decays. These provide the possibility to study {\textit CP} violation effects in the $B^{0}_s$ and $B^{0}$ systems. Decay-time-integrated or decay-time-dependent asymmetries between charge conjugated final states probe {\textit CP} violation in $B^{0}_{(s)}$ mixing through the measurement of the parameter $a_{\textrm sl}. These measurements rely on data-driven techniques to control possible detection asymmetries.