We combine the constraint suggested by the recent BNL E821 measurement of the anomalous magnetic moment of the muon on the parameter space of the constrained MSSM (CMSSM) with those provided previously by LEP, the measured rate of b → sγ decay and the cosmological relic density Ωχh2. Our treatment of Ωχh2 includes carefully the direct-channel Higgs poles in annihilation of pairs of neutralinos χ and a complete analysis of χ - ℓ̄ coannihilation. We find excellent consistency between all the constraints for tan β ≳ 10 and μ > 0, for restricted ranges of the CMSSM parameters m0 and m1/2. All the preferred CMSSM parameter space is within reach of the LHC, but may not be accessible to the Tevatron collider, or to a first-generation e+e- linear collider with centre-of-mass energy below 1.2 TeV.
|Original language||English (US)|
|Number of pages||9|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - May 24 2001|
Bibliographical noteFunding Information:
We thank Geri Ganis for useful information, and Pran Nath for discussions. The work of D.V.N. was partially supported by DOE grant DE-F-G03-95-ER-40917, and that of K.A.O. by DOE grant DE-FG02-94ER-40823.