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

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

1995-07-27

arxiv.org/abs/hep-ph/9507438v1

Phys.Lett. B362 (1995) 155-163

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, harvmac and epsf, 3 figures. Full postscript version including figures available at http://smyrd.bu.edu/htfigs/htfig

Scientific paper

10.1016/0370-2693(95)01152-G

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 $\gamma\gamma\gamma$, $\gamma + E\!\!\!/ $ and $\gamma+$hadrons constrain the size of the technicolor gauge group and the strength of the $Z\gamma P^a$ coupling. The limits are then applied to several specific technicolor scenarios.

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