A Remark on the $Z^0 \to b\bar b$ Width

Details A Remark on the $Z^0 \to b\bar b$ Width A Remark on the $Z^0 \to b\bar b$ Width

1995-03-02

arxiv.org/abs/hep-ph/9503211v1

Phys.Lett. B355 (1995) 325-328

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages uuencoded postscript including 2 figures

Scientific paper

10.1016/0370-2693(95)00662-5

The $Z^0 \to b\bar b$ width, $\Gamma_b$, is analysed in conjunction with the total and hadronic $Z^0$ widths, $\Gamma_T$ and $\Gamma_h$. Assuming, tentatively, that the present 2$\sigma$ discrepancy in $\Gamma_b$ will substantiate as time goes on, for large values of $m_H$ it will be sufficient to modify the $Z^0 b \bar b$ vertex only. In contrast, for small values of $m_H$, the theoretical predictions for both the $Z^0$ width into light quarks and leptons as well as the $Z^0 \to b\bar b$ vertex will have to be modified.

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