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arXiv · hep-ph/9507438

Limits on Pseudoscalar Bosons From Rare $Z$ Decays at LEP

Gautam Rupak·Elizabeth H. Simmons
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Abstract

Current LEP data on rare $Z$ decays constrain nonminimal technicolor models that contain light neutral pseudo-Nambu-Goldstone bosons ($P^a$). We discuss the production and decay of such particles, and show how LEP data on $γγγ$, $γ+ E\!\!\!/ $ and $γ+$hadrons constrain the size of the technicolor gauge group and the strength of the $ZγP^a$ coupling. The limits are then applied to several specific technicolor scenarios.

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Gautam Rupak, Elizabeth H. Simmons. 1995-07-27. Limits on Pseudoscalar Bosons From Rare $Z$ Decays at LEP. https://doi.org/10.1016/0370-2693(95)01152-g

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