Lower bound on the neutralino mass from new data on CMB and implications for relic neutralinos

@article{Bottino2003LowerBO,
  title={Lower bound on the neutralino mass from new data on CMB and implications for relic neutralinos},
  author={Alessandro Bottino and Fiorenza Donato and Nicolao Fornengo and Stefano Scopel},
  journal={Physical Review D},
  year={2003},
  volume={68},
  pages={043506}
}
In the framework of an effective minimal supersymmetric extension of the standard model without gaugino-mass unification at a grand unification scale, we set a lower bound on the neutralino mass based on the new WMAP data on ${\ensuremath{\Omega}}_{\mathrm{CDM}}$ $(R$-parity conservation is assumed). Our lower bound ${m}_{\ensuremath{\chi}}\ensuremath{\gtrsim}6\mathrm{GeV}$ leaves much room for relic neutralinos significantly lighter than those commonly considered ${(m}_{\ensuremath{\chi… 

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References

SHOWING 1-10 OF 41 REFERENCES
Relic neutralino densities and detection rates with nonuniversal gaugino masses
We extend previous analyses of the interplay between nonuniversalities in the gaugino mass sector and the thermal relic densities of LSP neutralinos, in particular to the case of moderate to large
How model-dependent are sparticle mass bounds from CERN LEP?
  • Drees, Tata
  • Physics, Medicine
    Physical review. D, Particles and fields
  • 1991
TLDR
The model dependence of the bounds that can be derived from the negative outcome of sparticle and Higgs-boson searches at CERN LEP as well as from the measurement of the total and nonhadronic decay widths of the {ital Z} boson are studied.
The role of Wino content in neutralino dark matter
We investigate the dark matter prospects of supersymmetric models with nonuniversal gaugino masses at low values of tan{beta}. We find that for particular values of the ratio of soft
Update of the direct detection of dark matter and the role of the nuclear spin
We update our exploration of the MSSM parameter space at the weak scale where new accelerator and cosmological constraints are respected. The dependence of WIMP-nucleon cross sections on parameters
Supersymmetric dark matter—how light can the LSP be?
Using a very minimal set of theoretical assumptions we derive a lower limit on the LSP mass in the MSSM. We only require that the LSP be the lightest neutralino, that it be responsible for the
Light neutralinos as dark matter in the unconstrained minimal supersymmetric standard model
Abstract The allowed parameter space for the lightest neutralino as the dark matter is explored using the minimal supersymmetric standard model as the low-energy effective theory without further
Gaugino mass nonuniversality and dark matter in supergravity, strings, and D-brane models
The effects of nonuniversality of gaugino masses on dark matter are examined within supersymmetric grand unification, and in string and D-brane models with R parity invariance. In SU(5) unified
Phenomenological aspects of supersymmetric standard models without grand unification
Abstract When the GUT relation on gaugino masses is relaxed, the mass and composition of the lightest neutralino are different from those in the GUT case. We discuss its phenomenological implications
Improved exclusion limits from the edelweiss wimp search
Abstract The EDELWEISS experiment has improved its sensitivity for the direct search for WIMP dark matter. In the recoil energy range relevant for WIMP masses below 10 TeV/ c 2 , no nuclear recoils
Light relic neutralinos
The relic abundance and the scalar cross section off the nucleon for light neutralinos (of mass below about 45 GeV) are evaluated in an effective MSSM model without GUT-inspired relations among the
...
1
2
3
4
5
...