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 tan β ≳ 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-τ̄ coannihilation is important for calculating the relic neutralino density, and we explore implications for the elastic neutralino-nucleon scattering cross section.
|Original language||English (US)|
|Number of pages||10|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - Mar 15 2001|
Bibliographical noteFunding Information:
We would like to thank P. Gambino and especially T. Falk for useful 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.