Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-03-08
Int.J.Mod.Phys. A15 (2000) 3369-3394
Physics
High Energy Physics
High Energy Physics - Phenomenology
23 pages, 1 figure, extended discussion on precision tests. To appear in International Journal of Modern Physics A
Scientific paper
10.1142/S0217751X00001164
We generalize a previous construction of a fermiophobic model to the case of more than one extra $W$ and $Z$ gauge bosons. We focus in particular on the existence of screening configurations and their implication on the gauge boson mass spectrum. One of these configurations allows for the existence of a set of relatively light new gauge bosons, without violation of the quite restrictive bounds coming from the $\rho_{\rm NC}$ parameter. The links with Bess and degenerate Bess models are also discussed. Also the signal given here by this more traditional gauge extension of the SM could help to disentangle it from the towers of Kaluza-Klein states over $W$ and $Z$ gauge bosons in extra dimensions.
Matias Joaquim
Vicini Alessandro
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