Author/Authors :
John Ellis ، نويسنده , , Gerardo Ganis، نويسنده , , D.V. Nanopoulos، نويسنده , , Keith A. Olive، نويسنده ,
Abstract :
If the Higgs boson indeed weighs about 114 to 115 GeV, there must be new physics beyond the Standard Model at some scale ≲106 GeV. The most plausible new physics is supersymmetry, which predicts a Higgs boson weighing ≲130 GeV. In the CMSSM with R and CP conservation, the existence, production and detection of a 114 or 115 GeV Higgs boson is possible if tanβ≳3. However, for the radiatively-corrected Higgs mass to be this large, sparticles should be relatively heavy: m1/2≳250 GeV, probably not detectable at the Tevatron collider and perhaps not at a low-energy e+e− linear collider. In much of the remaining CMSSM parameter space, neutralino-τ̃ coannihilation is important for calculating the relic neutralino density, and we explore implications for the elastic neutralino–nucleon scattering cross section.
