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Aspects Of The Stueckelberg Extension, Boris Körs, Pran Nath
Aspects Of The Stueckelberg Extension, Boris Körs, Pran Nath
Pran Nath
A detailed analysis of a Stueckelberg extension of the electro-weak gauge group with an extra abelian U(1)ₓ factor is presented for the Standard Model as well as for the MSSM. The extra gauge boson gets massive through a Stueckelberg type coupling to a pseudo-scalar, instead of a Higgs effect. This new massive neutral gauge boson Z′ has vector and axial vector couplings uniquely different from those of conventional extra abelian gauge bosons, such as appear e.g. in GUT models. The extended MSSM furthermore contains two extra neutralinos and one extra neutral CP-even scalar, the latter with a mass larger than …