Can I read The CMSSM parameter space at large tanβ on EtoBox?

The CMSSM parameter space at large tanβ by John Ellis; Toby Falk; Gerardo Ganis; Keith A. Olive; Mark Srednicki is a Physics and Astronomy article available to read on EtoBox.

What is The CMSSM parameter space at large tanβ about?

We extend previous combinations of LEP and cosmological relic density constraints on the parameter space of the constrained MSSM, with universal input supersymmetry-breaking parameters, to large tan β. We take account of the possibility that the lightest Higgs boson might weigh about 115 GeV, but also retain the possibility that it might be heavier. We include the most recent implementation of the b → sγ constraint at large tan β. We refine previous relic density calculations at large tan β by combining a careful treatment of the direct-channel Higgs poles in annihilation of pairs of neutralinos χ with a complete treatment of χ-τ coannihilation, and discuss carefully uncertainties associated with the mass of the b quark. We find that coannihilation and pole annihilations allow the CMSSM to yield an acceptable relic density at large tan β, but it is consistent with all the constraints only if m χ > 140 (180) GeV for μ > 0 (μ < 0) for our default choices m b (m b ) MS SM = 4.25 GeV, m t = 175 GeV, and A 0 = 0.

Who reads The CMSSM parameter space at large tanβ?

Author

John Ellis; Toby Falk; Gerardo Ganis; Keith A. Olive; Mark Srednicki

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0370-2693)

Published

2001

Language

EN

Field

Physics and Astronomy (Physical Sciences)