Quark Family Discrimination and Flavour-Changing Neutral Currents in the SU(3)_C X SU(3)_L X U(1) Model with Right-Handed Neutrinos

TL;DR

This paper investigates flavor-changing neutral currents in a 3-3-1 model with right-handed neutrinos, deriving constraints on new gauge boson masses and implications for quark family differences.

Contribution

It provides the first detailed calculation of FCNC effects in this specific 3-3-1 model, establishing bounds on the new gauge boson mass and highlighting family differences.

Findings

Lower bound on new gauge boson mass: 1.02 TeV

Third family differs from first two in this model

FCNC contributions affect neutral meson mass differences

Abstract

Contributions of flavour-changing neutral currents in the 3 3 1 model with right-handed neutrinos to mass difference of the neutral meson system $\Delta m_P (P = K, D, B)$ are calculated. Using the Fritzsch anzats on quark mixing, we show that the third family should be different from the first two. We obtain a lower bound on mass of the new heavy neutral gauge boson as 1.02 TeV.