Information and Discrimination from b Quark Production on Z Resonance

Details Information and Discrimination from b Quark Production on Z Resonance Information and Discrimination from b Quark Production on Z Resonance

1994-02-17

arxiv.org/abs/hep-ph/9402305v2

Phys.Rev. D50 (1994) 3076-3084

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 6 figures available by air mail upon request, (e-mail renard@lpmsun2.lpm.univ-montp2.fr PM/94-04, UTS-DFT-94-02 .( r

Scientific paper

10.1103/PhysRevD.50.3076

We introduce and define operatively in a model independent way a new ``heavy" b-vertexparameter, $\eta_b$, 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 $\eta_b$ with that of a second and previously defined ``heavy" b-vertex parameter $\delta_{bV}$ 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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