Averages of b-hadron, c-hadron, and tau-lepton Properties

TL;DR

This paper compiles and updates the world averages of properties for b-hadrons, c-hadrons, and tau-leptons, based on data up to 2010, including lifetimes, mixing, and CP violation parameters.

Contribution

It provides a comprehensive set of standardized averages for heavy flavor and tau-lepton properties, incorporating recent data and correlations for the first time.

Findings

Updated world averages for heavy flavor properties

Inclusion of recent measurements up to 2010

Standardized parameters for future research

Abstract

This article reports world averages for measurements of b-hadron, c-hadron, and tau-lepton properties obtained by the Heavy Flavor Averaging Group (HFAG) using results available at least through the end of 2009. Some of the world averages presented use data available through the spring of 2010. For the averaging, common input parameters used in the various analyses are adjusted (rescaled) to common values, and known correlations are taken into account. The averages include branching fractions, lifetimes, neutral meson mixing parameters, CP violation parameters, and parameters of semileptonic decays.