Supersymmetric Dark Matter and the Energy of a Linear Electron-Positron Collider

John Ellis; Gerardo Ganis; Keith A. Olive

doi:10.1016/S0370-2693(00)00029-0

paper

Supersymmetric Dark Matter and the Energy of a Linear Electron-Positron Collider

arXiv:hep-ph/9912324 · doi:10.1016/S0370-2693(00)00029-0

Abstract

We suggest that supersymmetric dark matter be used to set the energy scale of a linear $e^{+} e^{-}$ collider. Assuming that the lightest supersymmetric particle (LSP) is a stable neutralino $χ$ , as in many incarnations of the MSSM with conserved R parity, previous calculations that include coannihilation effects have delineated the region of the $(m_{1/2}, m_{0})$ plane where the LSP cosmological relic density lies in the preferred range $0.1 \la Ω_χ h^2 \la 0.3$. We evaluate here the total cross section for $e^{+} e^{-} \to$ visible pairs of supersymmetric particles, for different values of $m_{1/2}$ and $m_{0}$ , and investigate how much of the dark matter region can be explored by $e^{+} e^{-}$ colliders with different centre-of-mass energies $E_{C M}$ . We find that a collider with $E_{C M} = 500$ GeV or 1 TeV can only explore part of the cosmological region, and that a collider with $E_{C M} = 1.5$ TeV with sufficient luminosity can explore all of the supersymmetric dark matter region.

14 pages, latex, 4 eps figures

References in corpus (1)

Suggestions for Improved Benchmark Scenarios for Higgs-Boson Searches at LEP2

Supersymmetric Dark Matter and the Energy of a Linear Electron-Positron Collider

Abstract

References in corpus (1)

Cited by in corpus (12)