Final measurement of $B^0_s$ mixing phase in the full CDF Run II data set

TL;DR

This paper presents the final measurement of the $B^0_s$ mixing phase, lifetime, and decay-width difference using the complete CDF Run II data, providing results that align with the Standard Model and are among the most precise to date.

Contribution

The paper provides the most comprehensive and precise measurement of the $B^0_s$ mixing parameters using the full dataset from the CDF experiment.

Findings

Results are consistent with the Standard Model.

Measurement precision is among the highest to date.

Provides updated values for $B^0_s$ mixing phase, lifetime, and decay-width difference.

Abstract

We report the final CDF measurement of the $B^0_s$ mixing phase, mean lifetime, and decay-width difference through the fit of the time evolution of flavor-tagged $B^0_s \rightarrow J/\psi \phi$ decays. The measurement is based on the full data set of 1.96 TeV $p\bar{p}$ collisions collected between February 2002 and September 2011 by the CDF experiment. The results are consistent with the standard model and other experimental determinations and are amongst the most precise to date.