Constraints on economical 331 models from mixing of K, Bd and Bs neutral mesons

TL;DR

This paper investigates how flavor changing neutral currents in minimal scalar sector 331 models affect neutral meson mixing, deriving bounds on model parameters from experimental data on K, B, and Bs mesons.

Contribution

It provides new constraints on the mixing angles, phases, and Z' boson parameters in economical 331 models based on meson mixing observables.

Findings

Bounds on down quark mixing angles and phases

Limits on Z' gauge boson mass and mixing parameters

Compatibility of economical 331 models with experimental meson data

Abstract

We analyze the effect of flavor changing neutral currents within 331 models. In particular, we concentrate in the so-called "economical" models, which have a minimal scalar sector. Taking into account the experimental measurements of observables related to neutral K and B meson mixing, we study the resulting bounds for angles and phases in the mixing matrix for the down quark sector, and the mass and mixing parameters related to the new Z' gauge boson.