Model for a light Z boson

R. Foot, X.-G. He, H. Lew, and R. R. Volkas
Phys. Rev. D 50, 4571 – Published 1 October 1994
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Abstract

A model of a light Z boson is constructed and phenomenological bounds are derived. This Z boson arises from a very simple extension to the standard model, and it is constrained to be light because the vacuum expectation values which generate its mass also break the electroweak gauge group. It is difficult to detect experimentally because it couples exclusively or primarily (depending on symmetry-breaking details) to second and third generation leptons. However, if the Z boson is sufficiently light, then there exists the possibility of the two-body decay τ→μZ occurring. This will provide a striking signature to test the model.

  • Received 5 January 1994

DOI:https://doi.org/10.1103/PhysRevD.50.4571

©1994 American Physical Society

Authors & Affiliations

R. Foot, X.-G. He, H. Lew, and R. R. Volkas

  • Physics Department, McGill University, 3600 University Street, Montreal, Quebec, Canada H3A 2T8
  • Physics Department, Institute of Theoretical Science, University of Oregon, Eugene, Oregon 97403-5203
  • Institute of Physics, Academia Sinica, Nankang, Taipei, Taiwan 11529, Republic of China
  • Research Centre for High Energy Physics, School of Physics, University of Melbourne, Parkville 3052, Australia

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Issue

Vol. 50, Iss. 7 — 1 October 1994

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