Pursuing the origin of electroweak symmetry breaking: a 'Bayesian Physics' argument for sqrt(s) <~; 600 GeV e+e- collider

Conference · Wed Aug 09 04:00:00 EDT 2000

OSTI ID:843034

Kane, G L ^[1]; Wells, James D

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1. LBNL Library

High-energy data has been accumulating over the last ten years, and it should not be ignored when making decisions about the future experimental program. In particular, we argue that the electroweak data collected at LEP, SLC and Tevatron indicate a light scalar particle with mass less than 500 GeV. This result is based on considering a wide variety of theories including the Standard Model, supersymmetry, large extra dimensions, and composite models. We argue that a high luminosity, 600 GeV e{sup +}e{sup -} collider would then be the natural choice to feel confident about finding and studying states connected to electroweak symmetry breaking. We also argue from the data that worrying about resonances at multi-TeV energies as the only signal for electroweak symmetry breaking is not as important a discovery issue for the next generation of colliders. Such concerns should perhaps be replaced with more relevant discovery issues such as a Higgs boson that decays invisibly, and ''new physics'' that could conspire with a heavier Higgs boson to accommodate precision electroweak data. An e{sup +}e{sup -} collider with {radical}s {approx}< 600 GeV is ideally suited to cover these possibilities.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director. Office of Science. Office of High Energy Physics
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 843034
• Report Number(s): LBNL--45356
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCURACY
COMPOSITE MODELS
DIMENSIONS
FERMILAB TEVATRON
HIGGS BOSONS
LUMINOSITY
ORIGIN
PHYSICS
SCALARS
STANDARD MODEL
SUPERSYMMETRY
SYMMETRY BREAKING