Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-06-17
Phys.Lett.B518:117-122,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages in REVTEX, 2 figures
Scientific paper
10.1016/S0370-2693(01)01046-2
The combination of new cosmic microwave background data with cosmological priors has determined the physical cold dark matter (cdm) density to be $\Omega_{\rm cdm} h^2 = 0.13\pm0.01$. We find the corresponding regions of parameters in the minimal supergravity model for which the lightest neutralino is the cdm particle. We then compare with the muon anomalous magnetic moment ($a_\mu$) measurement, the mass of the lighter CP-even Higgs boson ($h^0$), the trilepton search at the upgraded Fermilab Tevatron collider, and a direct search for relic neutralinos. The intersection of $\Omega_{\rm cdm} h^2$ and $a_\mu$ constraints selects $\tan\beta\approx 40-45$.
Barger Vernon
Kao Chi-Chang
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