Skip to Main content Skip to Navigation
Journal articles

Extra generations and discrepancies of electroweak precision data

Abstract : It is shown that additional chiral generations are not excluded by the latest electroweak precision data if one assumes that there is no mixing with the known three generations. In the case of ``heavy extra generations'', when all four new particles are heavier than $Z$ boson, quality of the fit for the one new generation is as good as for zero new generations (Standard Model). In the case of neutral leptons with masses around 50 GeV (``partially heavy extra generations'') the minimum of $\chi^2$ is between one and two extra generations.
Document type :
Journal articles
Complete list of metadata

http://hal.in2p3.fr/in2p3-00011251
Contributor : Magali Damoiseaux Connect in order to contact the contributor
Submitted on : Friday, March 8, 2002 - 10:25:43 AM
Last modification on : Tuesday, October 19, 2021 - 10:50:09 PM

Links full text

Identifiers

Collections

`

Citation

V A. Novikov, L B. Okun, a N. Rozanov, M I. Vysotsky. Extra generations and discrepancies of electroweak precision data. Physics Letters B, Elsevier, 2002, 529, pp.111-116. ⟨in2p3-00011251⟩

Share

Metrics

Record views

109