Phenomenological aspects of a Fermiophobic SU(2)xSU(2)xU(1) extension of the Standard Model

Details Phenomenological aspects of a Fermiophobic SU(2)xSU(2)xU(1) extension of the Standard Model Phenomenological aspects of a Fermiophobic SU(2)xSU(2)xU(1) extension of the Standard Model

1997-05-28

arxiv.org/abs/hep-ph/9705450v1

Nucl.Phys. B507 (1997) 51-90

Physics

High Energy Physics

High Energy Physics - Phenomenology

43 pages, 7 figures, plain LaTeX, epsfig

Scientific paper

10.1016/S0550-3213(97)00537-3

We consider an extension of the standard electroweak theory with gauge group $SU(2)_L \times SU(2)_R \times U(1)_{\tilde{Y}}$, where the gauge bosons of the extra $SU(2)_R$ factor do not couple to ordinary fermions. We show that precision electroweak data and flavour physics provide quite stringent indirect constraints on its parameter space, but still allow for relatively light non-standard gauge and Higgs bosons. We then consider the model phenomenology at high-energy colliders, and observe that in the gauge boson sector present bounds and possible future signals are dominated by $Z'$ production. In summary, indirect constraints on the charged gauge boson sector are so tight that observable new effects must be connected either with the neutral gauge boson sector or with the extended Higgs sector of the model.

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