Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2014

TL;DR

This paper compiles and updates world averages of key properties of $b$-hadrons, $c$-hadrons, and $ au$-leptons as of summer 2014, providing a comprehensive summary for researchers in heavy flavor physics.

Contribution

It provides the first comprehensive set of world averages of heavy flavor and tau lepton properties as of 2014, incorporating correlated measurements and standardized input parameters.

Findings

Updated averages of branching fractions and lifetimes

Precise measurements of neutral meson mixing and CP violation

Refined CKM matrix element estimates

Abstract

This article reports world averages of measurements of $b$-hadron, $c$-hadron, and $\tau$-lepton properties obtained by the Heavy Flavor Averaging Group (HFAG) using results available through summer 2014. 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, parameters of semileptonic decays and CKM matrix elements.