Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-04-08
Phys.Rev.D78:085014,2008
Physics
High Energy Physics
High Energy Physics - Theory
45 pages, 8 eps figures, feynmf. Phenomenological section expanded. 2 plots and references added
Scientific paper
10.1103/PhysRevD.78.085014
We study an extension of the MSSM by an anomalous abelian vector multiplet and a St\"uckelberg multiplet. The anomalies are cancelled by the Green-Schwarz mechanism and the addition of Chern-Simons terms. The advantage of this choice over the standard one is that it allows for arbitrary values of the quantum numbers of the extra U(1). As a first step towards the study of hadron annihilations producing four leptons in the final state (a clean signal which might be studied at LHC) we then compute the decays $Z'\to Z_0 \g$ and $Z'\to Z_0 Z_0$. We find that the largest values of the decay rate is $\sim 10^{-4}$ GeV, while the expected number of events per year at LHC is at most of the order of 10.
Anastasopoulos Pascal
Fucito Francesco
Lionetto Andrea
Pradisi Gianfranco
Racioppi Antonio
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