Study of b -> u l nu Decays with an Inclusive Generator

TL;DR

This paper introduces a new inclusive generator for b -> u l nu decays, focusing on kinematic modeling and resonance analysis, aiding the extraction of Vub in semileptonic B decay experiments.

Contribution

A novel generator for inclusive b -> u l nu decays with multiple prescriptions for kinematic and hadronic state modeling is presented.

Findings

Detailed invariant mass and resonance decomposition results.

Enhanced modeling of b-quark kinematics inside hadrons.

Implications for Vub extraction at LEP and B factories.

Abstract

A generator for inclusive b -> u l nu decays has been developed. Different prescriptions have been applied to describe the kinematics of the b-quark inside the hadron and the generation of the hadronic final states. Results are presented with particular attention to the invariant mass of the hadronic system recoiling against the lepton and its resonance decomposition. These studies are of special relevance for the extraction of Vub from semileptonic B decays at LEP and at B factories.