Review of B B-bar Mixing Results

TL;DR

This paper reviews the latest experimental results on B B-bar meson mixing, focusing on measurements of mass differences Delta-Md and Delta-Ms, providing updated world averages and limits as of July 1999.

Contribution

It compiles and summarizes recent experimental measurements of B B-bar mixing parameters, updating world averages and limits for the first time in late 1999.

Findings

Delta-Md = 0.473 +- 0.016 ps-1

Delta-Ms limit < 12.4 ps-1 at 95% CL

Sensitivity reached 14.2 ps-1

Abstract

A review of B B-bar mixing results at the end of July 1999 is presented. Emphasis is put on recent measurements of Delta-Md and Delta-Ms. For Delta-Md, the new world average is Delta-Md = 0.473 +- 0.016 ps-1. For Delta-Ms, the new world average 95% CL limit is 12.4 ps-1, with a sensitivity of 14.2 ps-1. Other related results are covered very briefly.