The Higgs Sector in a $U(1)^\prime$ Extension of the MSSM

Details The Higgs Sector in a $U(1)^\prime$ Extension of the MSSM The Higgs Sector in a $U(1)^\prime$ Extension of the MSSM

2004-05-25

arxiv.org/abs/hep-ph/0405244v2

Phys.Rev. D70 (2004) 115006

Physics

High Energy Physics

High Energy Physics - Phenomenology

49 pages, 17 figures

Scientific paper

10.1103/PhysRevD.70.115006

We consider the Higgs sector in an extension of the MSSM with extra SM singlets, involving an extra $U(1)^\prime$ gauge symmetry, in which the domain-wall problem is avoided and the effective $\mu$ parameter is decoupled from the new gauge boson $Z^\prime$ mass. The model involves a rich Higgs structure very different from that of the MSSM. In particular, there are large mixings between Higgs doublets and the SM singlets, significantly affecting the Higgs spectrum, production cross sections, decay modes, existing exclusion limits, and allowed parameter range. Scalars considerably lighter than the LEP2 bound (114 GeV) are allowed, and the range $\tan \beta \sim 1$ is both allowed and theoretically favored. Phenomenologically, we concentrate our study on the lighter (least model-dependent, yet characteristic) Higgs particles with significant SU(2)-doublet components to their wave functions, for the case of no explicit CP violation in the Higgs sector. We consider their spectra, including the dominant radiative corrections to their masses from the top/stop loop. We computed their production cross sections and reexamine the existing exclusion limits at LEP2. We outline the searching strategy for some representative scenarios at a future linear collider. We emphasize that gaugino, Higgsino, and singlino decay modes are indicative of extended models and have been given little attention. We present a comprehensive list of model scenarios in the Appendices.

Affiliated with

Also associated with

No associations

Rating

The Higgs Sector in a $U(1)^\prime$ Extension of the MSSM 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 The Higgs Sector in a $U(1)^\prime$ Extension of the MSSM, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Higgs Sector in a $U(1)^\prime$ Extension of the MSSM will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-387336