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Mass scale of new physics in the absence of the Higgs boson

  • B.A. Kniehl
  • A. Sirlin
Theoretical physics

Abstract.

We consider a hypothetical scenario in which the Higgs boson is absent, and attempt to constrain the mass scale \(\Lambda\) of the new physics that would take its place. Using recent measurements of \(\sin^2\theta_{\mathrm{eff}}^{\mathrm{lept}}\) and \(M_W\), we show that, in a class of theories characterized by simple conditions, the upper bound on \(\Lambda\) is close to or smaller than the upper bound on \(M_H\) in the Standard Model, while in the complementary class \(\Lambda\) is not restricted by our considerations. The issue of fine-tuning when \(\Lambda\) is large is briefly discussed. Observations concerning the magnitude of the Higgs-boson contributions in the Standard Model are included. As a by-product of our considerations, we discuss the usefulness and important properties of a radiative correction, \(\Delta r_{\mathrm{eff}}\), that directly links \(\sin^2\theta_{\mathrm{eff}}^{\mathrm{lept}}\) with \(\alpha\), \(G_\mu\), and \(M_Z\).

Keywords

Higgs Boson Mass Scale Radiative Correction Simple Condition Hypothetical Scenario 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • B.A. Kniehl
    • 1
  • A. Sirlin
    • 1
  1. 1.II. Institut für Theoretische Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, GermanyDE

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