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First determination of the quark mixing matrix element Vtb independent of assumptions of unitarity

John Swain·Lucas Taylor
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Abstract

We present a new method for the determination of the Cabibbo-Kobayashi-Maskawa quark mixing matrix element $|V_{tb}|$ from electroweak loop corrections, in particular those affecting the process $Z\to b\bar{b}$. From a combined analysis of results from the LEP, SLC, Tevatron, and neutrino scattering experiments we determine $|V_{tb}| = 0.77^{+0.18}_{-0.24}$. This is the first determination of $|V_{tb}|$ which is independent of unitarity assumptions.

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John Swain, Lucas Taylor. 1997-12-17. First determination of the quark mixing matrix element Vtb independent of assumptions of unitarity. https://doi.org/10.1103/physrevd.58.093006

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