On the role of the Higgs mechanism in present electroweak precision tests

Jun, 1994
10 pages
Published in:
  • Z.Phys.C 67 (1995) 109-114
e-Print:
Report number:
  • BI-TP-94-31

Citations per year

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Abstract:
Based on the observables \MW, Γl\Gamma_l, \bar\sw~2(\MZ~2), we evaluate the parameters Δx,Δy\Delta x, \Delta y and ε\varepsilon at one-loop level within an electroweak massive vector-boson theory, which does not employ the Higgs mechanism. The theoretical results are consistent with the experimental ones on Δx\Delta x, Δy\Delta y, ε\varepsilon. The theoretical prediction for Δy\Delta y coincides with the standard-model one (apart from numerically irrelevant terms which vanish for \MH\to\infty). Non-renormalizability only affects Δx\Delta x and ε\varepsilon, which differ from the standard-model results by the replacement \log\MH\to\log\Lambda for a heavy Higgs mass, \MH (where Λ\Lambda denotes an effective UV cut-off).
  • electroweak interaction: model
  • model: electroweak interaction
  • gauge field theory: SU(2) x U(1)
  • intermediate boson: massive
  • massive: intermediate boson
  • Feynman graph: higher-order
  • W: mass
  • mass: W
  • Z0: leptonic decay
  • leptonic decay: Z0