What if the Higgs boson weighs 115 GeV?

John Ellis, Gerardo Ganis, D. V. Nanopoulos, Keith A. Olive

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

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 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 languageEnglish (US)
Pages (from-to)171-180
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume502
Issue number1-4
DOIs
StatePublished - Mar 15 2001

Bibliographical note

Funding 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.

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