arXiv subjects

M. Zralek

Publications and source records attributed to M. Zralek.

39 records · Page 3Linked to original sources

arXiv1994

CP Violation in the Heavy Neutrinos Production Process $e^+e^-\rightarrow N_1N_2$

The problem of CP conservation and CP violation for two heavy neutrinos production in $e^+e^-$ interaction is considered. Very convenient way of parametrization of the neutrino mass matrix, from which necessary and sufficient condition for CP conservation easily follows, is presented. Contrary to the Kobayashi-Maskawa mechanism, the effects of CP violation in the lepton sector with Majorana neutrinos can be very large. Change of the total cross section caused by CP violation can be much larger then the cross section itself.

hep-ph↗

arXiv1993

Boson Pair Productions In $e^+$ $e^-$ Annihilation

We examine the processes $e^+ e^-\longrightarrow W^+ W^-$ and $Z^0 Z^0$ in the context of the $SP(6)_L\otimes U(1)_Y$ model. We find that there are significant deviations in the total cross sections $σ(s)$ from the standard model results due to the presence of additional gauge bosons $Z^\prime$ and $W^\prime$ in the model. These deviations could be detected at LEP.

hep-ph↗

arXiv1992

Test of the Dimopouos-Hall-Raby Ansatz for Fermion Mass Matrices

By evolution of fermion mass matrices of the Fritzsch and the Georgi-Jarlskog forms from the supersymmetric grand unified scale, DHR obtained predictions for the quark masses and mixings. Using Monte Carlo methods we test these predictions against the latest determinations of the mixings, the CP-violating parameter epsilon_K and the B_d^0--Bbar_d^0 mixing parameter r_d. The acceptable solutions closely specify the quark masses and mixings, but lie at the edges of allowed regions at 90% confidence level.

hep-ph↗