Determination of V_ub at the Z-boson resonance

Abstract

We show that the observation of energetic charged leptons from semileptonic $b$ becays at the LEP and SLC $Z$--boson factories offers a unique opportunity to measure the quark mixing matrix element $V_{ub}$. We present various distributions of the $b$ decay products to show that the $b\to u$ decays can be cleanly separated from the $b\to c$ decays, with a signal of $O(100)$ events per million $Z$ bosons produced.

11 pages including 3 figures (standard tex file)

References in corpus (6)

• QCD Predictions for Lepton Spectra in Inclusive Heavy Flavour Decays
• On the Motion of Heavy Quarks inside Hadrons: Universal Distributions and Inclusive Decays
• Heavy Quark Distribution Function in QCD and the AC${}^2$M${}^2$ Model
• A Parton Model for Inclusive Semileptonic B Meson Decays
• An Alternative Method of Extracting $V_{bu}$ from Semi-leptonic B Decay
• Hadronic Spectrum in Inclusive Semileptonic B Decays

Cited by in corpus (1)

• A new method of determining $|V_{ub}|$ by the processes $\bar{B}\to \rho l\bar{\nu }$ and $\bar{B} \to K^* l \lbar$