What if the Higgs Boson Weighs 115 GeV ?
نویسندگان
چکیده
John Ellis, Gerardo Ganis, D.V. Nanopoulos and Keith A. Olive TH Division, CERN, Geneva, Switzerland Max-Planck-Institut für Physik, Munich, Germany; present address: INFN, Università di Roma II ‘Tor Vergata’, Rome, Italy Department of Physics, Texas A & M University, College Station, TX 77843, USA; Astroparticle Physics Group, Houston Advanced Research Center (HARC), Mitchell Campus, Woodlands, TX 77381, USA; Chair of Theoretical Physics, Academy of Athens, Division of Natural Sciences, 28 Panepistimiou Avenue, Athens 10679, Greece Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455, USA
منابع مشابه
2 Renormalization of the Effective Potential
If the Higgs boson weighs about 115 GeV, the effective potential of the Standard Model becomes unstable above a scale of about 10 6 GeV. This instability may be rectified only by new bosonic particles such as stop squarks. However, avoiding the instability requires fine-tuning of the model couplings, in particular if the theory is not to become non-perturbative before the Planck scale. Such fin...
متن کاملWW as the discovery mode for a light Higgs boson
The production cross section for amH ≈ 115 GeV, SM Higgs boson in weak boson fusion at the LHC is sizable. However, the branching fraction for H → WW is expected to be relatively small. The signal, with its two forward jets, is sufficiently different from the main backgrounds that a signal to background ratio of better than 1:1 can nevertheless be obtained, with large enough rate to allow for a...
متن کاملLep-wide Combination of the Search for the Standard Model Higgs Boson
A search for the standard model Higgs boson at LEP is reported. In the following, the results obtained by combining all standard model Higgs boson search channels of the experiments (at the end of run in the year 2000) are discussed. The data favour slightly a signal-andbackground hypothesis. The excess over the background would be consistent with the existence of a standard model Higgs boson a...
متن کاملA Supersymmetric Explanation of the Excess of Higgs–Like Events at LEP
Searches for the Standard Model Higgs boson by the four LEP experiments found excess events in two mass ranges: a 2.3σ excess around 98 GeV, and an 1.7σ excess around 115 GeV. The latter has been discussed widely in the literature, but the former has attracted little attention so far. In this paper I explore the possibility of explaining the excess near 98 GeV through production of the lighter ...
متن کاملImplications of a possible 115 GeV supersymmetric Higgs boson on detection and cosmological abundance of relic neutralinos
We show that a supersymmetric neutral Higgs boson with a mass of about 115 GeV and with the other prerequisites required by the LEP Higgs events would be compatible with the detection of relic neutralinos in current set–ups for WIMP direct search. Thus this putative Higgs would fit remarkably well in an interpretation in terms of relic neutralinos of the annual–modulation effect recently measur...
متن کامل