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arXiv · hep-ph/9409317

Determination of V_ub at the Z-boson resonance

C. S. Kim·A. D. Martin
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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.

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C. S. Kim, A. D. Martin. 1994-09-15. Determination of V_ub at the Z-boson resonance. https://doi.org/10.1016/0370-2693(94)01594-3

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