Heavy fourth-generation neutrino and flavour-changing neutral currents

descriptionPublicationkeyboard_double_arrow_right Article 01 Dec 1988 English Publisher:Springer Science and Business Media LLCJournal:Zeitschrift für Physik C Particles and Fields, volume 40, pages 553-558 (issn: 0170-9739, eissn: 1434-6052,

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Authors: M. Tanimoto;

doi: 10.1007/bf01560226

Heavy fourth-generation neutrino and flavour-changing neutral currents

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Abstract

We study the flavour-changing neutral currents in the case that the fourth-generation neutrino exists and the known three left-handed neutrino masses are at the experimental limits of the direct measurements. The fourth-generation neutrino has the mass of order a few ten GeV and the flavour-changing processes of the heavy neutrinos are expected to be observed onZ0 ine+e− collisions. The heavy fourth-generation neutrino is significant to reveal the nature of the neutrino; Dirac or Majorana, the see-saw mechanism and the right-handed scale.

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Ehime University
Japan

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