Theoretical Developments in Inclusive B Decays

TL;DR

This paper reviews recent theoretical advancements in inclusive B decays, focusing on their role in determining CKM matrix elements and testing HQET predictions through various decay distributions.

Contribution

It summarizes new theoretical methods and analyses for inclusive B decays, including the upsilon expansion and differential decay distribution predictions.

Findings

Theoretical predictions for B decay distributions are reviewed.

Methods for extracting HQET matrix elements are discussed.

The upsilon expansion's validity and testing approaches are analyzed.

Abstract

Some recent theoretical work on inclusive B decays relevant for the model independent determination of |V_{ub}| and |V_{cb}| is summarized. The theoretical predictions and their reliability for several differential decay distributions in B -> X_{c,u}e nu and B -> X_s gamma are reviewed. These can be used to determine certain important HQET matrix elements. The upsilon expansion and ways of testing it are discussed.