Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-09-29
Phys.Lett.B502:171-180,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, 5 eps figures
Scientific paper
10.1016/S0370-2693(00)01326-5
If the Higgs boson indeed weighs about 114 to 115 GeV, there must be new physics beyond the Standard Model at some scale \la 10^6 GeV. The most plausible new physics is supersymmetry, which predicts a Higgs boson weighing \la 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 \tan\beta \ga 3. However, for the radiatively-corrected Higgs mass to be this large, sparticles should be relatively heavy: m_{1/2} \ga 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-stau coannihilation is important for calculating the relic neutralino density, and we explore implications for the elastic neutralino-nucleon scattering cross section.
Ellis John
Ganis Gerardo
Nanopoulos Dimitri V.
Olive Keith A.
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