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Information and Discrimination from b Quark Production on Z Resonance

D. Comelli·C. Verzegnassi·F. M. Renard
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Abstract

We introduce and define operatively in a model independent way a new ``heavy" b-vertexparameter, $η_b$, that can be derived from the measurement of a special polarization asymmetry for production of b-quarks on Z resonance. We show that the combination of the measurement of $η_b$ with that of a second and previously defined ``heavy" b-vertex parameter $δ_{bV}$ can discriminate a number of models of New Physics that remain associated to different ``trajectories" in the plane of the variations of the two parameters. This is shown in particular for some popular SUSY and technicolor-type models. In general, this discrimination is possible if a measurement of \underline{both} parameters is performed.

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D. Comelli, C. Verzegnassi, F. M. Renard. 1994-03-03. Information and Discrimination from b Quark Production on Z Resonance. https://doi.org/10.1103/physrevd.50.3076

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