The CMSSM parameter space at large /tanβ

By John Ellis, T. Falk, G. Ganis, K. Olive, M. Srednicki. 2001

249 citations recorded by the source corpus.

Abstract 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 tanβ. 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 tanβ. We refine previous relic density calculations at large tanβ 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 tanβ, but it is consistent with all the constraints only if mχ>140 (180) GeV for μ>0 (μ m b (m b ) MS SM =4.25  GeV, mt=175 GeV, and A0=0.

Subfields: Artificial Intelligence, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/a9d190df5976fa271deac3cb8aeabe97078ff9b6

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

1. M. Hobson
2. Farhan Feroz
3. Roberto Trotta
4. R. Ruiz de Austri
5. Alexander Belyaev
6. Howard Baer
7. N. Madhusudhan
8. David Kipping

In Nuclear and High Energy Physics

1. M. Hobson
2. Howard Baer
3. C. Balázs
4. Roberto Trotta
5. Alexander Belyaev
6. L. Roszkowski
7. Farhan Feroz
8. X. Tata

Citations in the corpus

• The impact of priors and observables on parameter inferences in the constrained MSSM (2008, methodology): “probability distribution for the largest of N samples drawn uniformly from the interval [0, 1 ]).”
• Updated Constraints on the Minimal Supergravity Model (2002, background): “The latter is especially important in evaluating the relic density when s-channel annihilation resonances occur, as in the mSUGRA model at large tan β, when Z̃1Z̃1 → A, H → f f̄ , where the fs are SM fermions [18, 20, 21, 22, 23].”
• Muon anomalous magnetic dipole moment in supersymmetric theories (2001, background): “sleptons [52, 53 ] (but heavier than 100GeV) that is consistent with adequate thermal relic abundance to be cosmologically interesting, 0.1 0 is not as restricted by B(b → s) [58, 59, 53 ] as M3µ < 0,”