Abstract
We analyze in (S,T,U) space one-loop oblique (vacuum-polarization) corrections assuming the scenario for a naturally heavy fourth-generation neutrino proposed by Hill and Paschos. We present full analytic results as well as simple approximation formulae for the case that the novel leptons are heavy as compared to the weak scale. We confront our results with precise data from LEP and other experiments and derive mass bounds on the charged lepton and the Majorana neutrinos of the fourth generation. We also investigate the implications for the upper bound on the top-quark mass coming from measurements of the W-boson mass. A heavy Majorana neutrino in the third generation decouples from electroweak physics and cannot be excluded experimentally. (orig.).
Citation Formats
Kniehl, B A, and Kohrs, H G.
Oblique radiative corrections from Majorana neutrinos.
Germany: N. p.,
1992.
Web.
Kniehl, B A, & Kohrs, H G.
Oblique radiative corrections from Majorana neutrinos.
Germany.
Kniehl, B A, and Kohrs, H G.
1992.
"Oblique radiative corrections from Majorana neutrinos."
Germany.
@misc{etde_10141594,
title = {Oblique radiative corrections from Majorana neutrinos}
author = {Kniehl, B A, and Kohrs, H G}
abstractNote = {We analyze in (S,T,U) space one-loop oblique (vacuum-polarization) corrections assuming the scenario for a naturally heavy fourth-generation neutrino proposed by Hill and Paschos. We present full analytic results as well as simple approximation formulae for the case that the novel leptons are heavy as compared to the weak scale. We confront our results with precise data from LEP and other experiments and derive mass bounds on the charged lepton and the Majorana neutrinos of the fourth generation. We also investigate the implications for the upper bound on the top-quark mass coming from measurements of the W-boson mass. A heavy Majorana neutrino in the third generation decouples from electroweak physics and cannot be excluded experimentally. (orig.).}
place = {Germany}
year = {1992}
month = {Nov}
}
title = {Oblique radiative corrections from Majorana neutrinos}
author = {Kniehl, B A, and Kohrs, H G}
abstractNote = {We analyze in (S,T,U) space one-loop oblique (vacuum-polarization) corrections assuming the scenario for a naturally heavy fourth-generation neutrino proposed by Hill and Paschos. We present full analytic results as well as simple approximation formulae for the case that the novel leptons are heavy as compared to the weak scale. We confront our results with precise data from LEP and other experiments and derive mass bounds on the charged lepton and the Majorana neutrinos of the fourth generation. We also investigate the implications for the upper bound on the top-quark mass coming from measurements of the W-boson mass. A heavy Majorana neutrino in the third generation decouples from electroweak physics and cannot be excluded experimentally. (orig.).}
place = {Germany}
year = {1992}
month = {Nov}
}