Limits on SUSY particle spectra from proton stability and dark matter constraints
Jan, 1998Citations per year
Abstract:
It is shown that the combined constraints on the amount of cold dark matter and of proton stability produce a stringent upper limit on the gluino mass (and hence on the lightest neutralino mass ) for a large class of gravity mediated supergravity unified models. One finds that for the minimal SU(5) model current data (Kamiokande) restricts GeV for a scalar soft breaking mass TeV. Expected future data from Super Kamionkande and ICARUS will be sensitive to the entire range of gluino mass for TeV, and be able to exclude the region GeV for TeV. Effects of quark mass textures are studied and one finds that the bound GeV holds when the experimental proton lifetime for the mode becomes yr.Implications of these results for a test of these models at the Tevatron and at the LHC are discussed. The effects of non-universal soft breaking in the Higgs and the third generation squark sectors are also examined, and it is found that the proton lifetime is sensitive to these non-universal effects. The current data already eliminates some regions of non-universalities. The constraints of proton stability on the direct detection of dark matter are seen to reduce the maximum event rates by as much as a factor of .Note:
- 13 pages including 5 figures
- supersymmetry
- supergravity
- grand unified theory: SU(5)
- sparticle: mass
- p: lifetime
- p: semileptonic decay
- dark matter
- mass: gluino
- Higgs particle: mass
- mass: LSP
References(47)
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