Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-03-21
JHEP 0507:069,2005
Physics
High Energy Physics
High Energy Physics - Phenomenology
49 pages, 13 figures; to appear in JHEP
Scientific paper
10.1088/1126-6708/2005/07/069
A detailed analysis of a Stueckelberg extension of the electro-weak gauge group with an extra U(1) 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 that of the Z'. One interesting scenario that emerges is an LSP that is dominantly composed out of the new neutralinos, leading to a possible new superweak candidate for dark matter. We investigate signatures of the Stueckelberg extension at a linear collider and discuss techniques for the detection of the expected sharp Z' resonance. It turns out that the substantially modified forward-backward asymmetry around the Z' pole provides an important signal. Furthermore, we also elaborate on generalizations of the minimal Stueckelberg extension to an arbitrary number of extra U(1) gauge factors.
Kors Boris
Nath Pran
No associations
LandOfFree
Aspects of the Stueckelberg Extension does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Aspects of the Stueckelberg Extension, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aspects of the Stueckelberg Extension will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-160149