Conformal Completion of the Standard Model with a Fourth Generation

TL;DR

This paper explores a model where a fourth generation of particles arises from a string-inspired framework, leading to a conformal fixed point that addresses the hierarchy problem and predicts new particles detectable at the LHC.

Contribution

It introduces a novel conformal completion of the Standard Model with a fourth generation based on orbifolded AdS/CFT, providing a dynamical mechanism for electroweak symmetry breaking.

Findings

Predicts new gauge bosons accessible at the LHC

Demonstrates a TeV-scale conformal fixed point

Addresses the gauge hierarchy problem

Abstract

We study dynamical electroweak symmetry breaking with a fourth generation within the $Z_n$ orbifolded $AdS_5\otimes S^5$ framework. A realistic $Z_7$ example is discussed. The initial theory reduces dynamically, due to the induced condensates, to a four-family trinification near a TeV-scale conformal fixed point where the gauge hierarchy problem does not exist. We predict new gauge bosons and bifundamental fermions and scalars accessible by the LHC.