TeV Scale Left Right Symmetry and Flavor Changing Neutral Higgs Effects

TL;DR

This paper explores a model within minimal left-right symmetric theories that decouples flavor-changing neutral Higgs effects from the W_R mass, making TeV-scale W_R detection at the LHC feasible.

Contribution

The authors propose a novel model that separates FCNH effects from the W_R mass, enabling lower W_R masses compatible with experimental bounds.

Findings

A new model allows W_R masses as low as 1-4 TeV.

Decoupling FCNH effects from W_R mass relaxes previous bounds.

Supports LHC searches for W_R in accessible energy range.

Abstract

In minimal left-right symmetric models, the mass of the neutral Higgs field mediating tree-level flavor changing effects (FCNH) is directly related to the parity breaking scale. Specifically, the lower bound on the Higgs mass coming from Higgs-induced tree-level effects, and exceeding about 15 TeV, would tend to imply a W_R mass bound much higher than that required by gauge exchange loop effects -- the latter allowing W_R masses as low as 2.5 TeV. Since a W_R mass below 4 TeV is accessible at the LHC, it is important to investigate ways to decouple the FCNH effects from the W_R mass. In this paper, we present a model where this happens, providing new motivation for LHC searches for W_R in the 1 - 4 TeV mass range.