Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-05-20
Phys.Lett.B573:162-172,2003
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages LaTeX, 9 eps figures
Scientific paper
10.1016/j.physletb.2003.08.056
Specific models of supersymmetry breaking predict relations between the trilinear and bilinear soft supersymmetry breaking parameters A_0 and B_0 at the input scale. In such models, the value of tan beta can be calculated as a function of the scalar masses m_0 and the gaugino masses m_{1/2}, which we assume to be universal. The experimental constraints on sparticle and Higgs masses, b to s gamma decay and the cold dark matter density Omega_{CDM} h^2 can then be used to constrain tan beta in such specific models of supersymmetry breaking. In the simplest Polonyi model with A_0 = (3 - sqrt{3})m_0 = B_0 + m_0, we find 11 < tan beta < 20 (tan beta ~ 4.15) for mu > 0 (mu < 0). We also discuss other models with A_0 = B_0 + m_0, finding that only the range -1.9 < A_0/m_0 < 2.5 is allowed for mu > 0, and the range 1.25 < A_0/m_0 < 4.8 for mu < 0. In these models, we find no solutions in the rapid-annihilation `funnels' or in the `focus-point' region. We also discuss the allowed range of tan beta in the no-scale model with A_0 = B_0 = 0. In all these models, most of the allowed regions are in the chi - stau_1 coannihilation `tail'.
Ellis John
Olive Keith A.
Santoso Yudi
Spanos Vassilis C.
No associations
LandOfFree
Phenomenological Constraints on Patterns of Supersymmetry Breaking 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 Phenomenological Constraints on Patterns of Supersymmetry Breaking, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phenomenological Constraints on Patterns of Supersymmetry Breaking will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-547983