$b \to c$ Hadronic Decays

TL;DR

This paper reviews experimental measurements of exclusive hadronic decays of bottom mesons to charmed states, focusing on branching fractions from $e^+e^-$ collider data, and uses these results to test theoretical models and QCD parameters.

Contribution

It compiles and analyzes recent experimental data on bottom meson decays, providing insights into factorization and QCD parameter determination.

Findings

Branching fraction measurements align with theoretical predictions

Tests of factorization show consistency with experimental data

Determination of QCD parameters $a_1$ and $a_2/a_1$ from decay data

Abstract

A review of current experimental results on exclusive hadronic decays of bottom mesons to a single or double charmed final state is presented. We concentrate on branching fraction measurements conducted at $e^+e^-$ colliders at the $\Upsilon(4s)$ and at the $Z^0$ resonance. The experimental results reported are then used in tests of theoretical model predictions, the determination of the QCD parameters $a_1$ and $a_2/a_1$ and tests of factorization