Universality-Breaking Effects in Leptonic Z Decays

6533b82cfe1ef96bd128f73c

RESEARCH PRODUCT

Universality-Breaking Effects in Leptonic Z Decays

Jurgen G. Korner Apostolos Pilaftsis Karl Schilcher J. Bernabéu

subject

Physics Particle physics Physics::Instrumentation and Detectors Computer Science::Information Retrieval High Energy Physics::Phenomenology General Physics and Astronomy Física FOS: Physical sciences Elementary particle Nuclear physics MAJORANA Particle decay High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph)Seesaw molecular geometry High Energy Physics::Experiment Symmetry breaking Neutrino Lepton Boson

description

We analyze the possibility of universality violation in diagonal leptonic decays of the $Z$ boson, in the context of interfamily "see-saw" models. In a minimal extension of the Standard Model with right-handed neutrino fields, we find that universality-breaking effects increase quadratically with the heavy Majorana neutrino mass and may be observed in the running $LEP$ experiments.

year	journal	country	edition	language
1993-07-19

10.1103/physrevlett.71.2695 http://arxiv.org/abs/hep-ph/9307295

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