Some constraints on neutral heavy leptons from flavor-conserving decays of the Z boson

Details Some constraints on neutral heavy leptons from flavor-conserving decays of the Z boson Some constraints on neutral heavy leptons from flavor-conserving decays of the Z boson

1995-03-07

arxiv.org/abs/hep-ph/9503248v2

Phys.Rev. D51 (1995) 3569-3577

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, Revtex 3.0, 6 uuencoded and compressed postscript figures included. Compressed postscript file of paper, including f

Scientific paper

10.1103/PhysRevD.51.3569

Small neutrino masses can arise in some grand unified models or superstring theories. We consider a model with an enhanced fermion sector containing Dirac neutral heavy leptons. The dependence on the mass and mixing parameters of these new fermions is investigated for several measurable quantities. We study the flavor-conserving leptonic decays of the Z boson and universality breaking in these decays. We also consider the W boson mass dependence on neutral heavy lepton parameters.

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