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arXiv · hep-ph/0203036

The $Z \to b \bar{b}$ Decay Asymmetry and Left-Right Models

Xiao-Gang He·G. Valencia
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Abstract

It has been pointed out recently by Chanowitz that the $Z \to b\bar{b}$ decay asymmetry poses a problem for the standard model whether it is genuine or not [Chanowitz:2001bv]. If this conflict is interpreted as new physics in the b-quark couplings, it suggests a rather large right handed coupling of the b-quark to the Z-boson. We show that it is possible to accommodate this result in left-right models that single out the third generation.

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Xiao-Gang He, G. Valencia. 2002-06-06. The $Z \to b \bar{b}$ Decay Asymmetry and Left-Right Models. https://doi.org/10.1103/physrevd.66.013004%2010.1103%2Fphysrevd.66.079901

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