Recent Lifetime and Mixing Measurements at the Tevatron

TL;DR

This paper reports recent measurements of B hadron lifetimes, B_s mixing, and D^0 mixing at the Tevatron, providing new insights and confirming oscillation phenomena with high significance.

Contribution

It presents the first observation of D^0 mixing at a hadron collider and updates on B_s oscillation measurements using data from CDF and D0.

Findings

B_s lifetime measured from multiple channels

B_s oscillation observed at 3σ significance

D^0 mixing observed at 4σ significance

Abstract

We present the latest $B$ hadron lifetimes, $B^0_s$ mixing, and $D^0$ mixing measurements using up to 3.0 fb$^{-1}$ of data collected by CDF and D0 experiments at Fermilab. The $B^0_s$ lifetime is measured from both $J/\psi \phi$ (CP admixture) and flavor specific channels, and the $B_c$ lifetime is obtained from semileptonic channels. Following the $B^0_s$ oscillation frequency measurement at CDF in 2006, the D0 collaboration now observes $B^0_s$ oscillation at a significance of about 3$\sigma$. Since the first $D^0$ mixing evidence established at $B$ factories in 2007, CDF has observed $D^0$ mixing at a significance of about 4$\sigma$ level, the first time from hadron collider.