Heavy Higgs bosons in the Weinberg-Salam model

Anthony C. Longhitano
Phys. Rev. D 22, 1166 – Published 1 September 1980
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Abstract

We search for a systematic way to characterize the low-energy sensitivity of the minimal Weinberg-Salam model to a heavy-Higgs-boson sector. We find that it is convenient to view this theory as the regulated version of a nonlinear σ model coupled to an SU(2)L×U(1) Yang-Mills theory. Within this framework, MH acts as the regulator. Using the symmetry properties of the nonlinear theory, along with a power-counting analysis, we are able to classify low-energy observables according to their sensitivity to MH. We find that, at one loop, the greatest sensitivity is logarithmic. An illustration of these ideas is provided by a calculation of the one-loop, MH-dependent corrections to the natural relation MWMZ cosθ=1. Finally, we discuss other possible applications of this technique.

  • Received 6 March 1980

DOI:https://doi.org/10.1103/PhysRevD.22.1166

©1980 American Physical Society

Authors & Affiliations

Anthony C. Longhitano

  • J. W. Gibbs Laboratory, Department of Physics, Yale University, New Haven, Connecticut 06520

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Issue

Vol. 22, Iss. 5 — 1 September 1980

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