A second Higgs near 0.5 TeV from bottom-up holographic modeling of beyond the Standard Model strong sector

TL;DR

This paper develops a bottom-up holographic model based on the Soft Wall approach to predict a second Higgs boson near 515 GeV arising from a strong sector beyond the Standard Model.

Contribution

It introduces a novel holographic model for composite Higgs particles that predicts a new scalar at approximately 515 GeV.

Findings

Predicts a second Higgs boson at about 515 GeV

Models the strong sector using holographic Soft Wall approach

Provides a spectrum consistent with beyond Standard Model physics

Abstract

One of the simplest extensions of the Standard Model (SM) consists in adding a scalar singlet. This second Higgs boson is able to solve several fundamental problems of SM. Additional scalar particles arise naturally in composite Higgs scenarios in which some confining "strong sector" beyond the SM drives the electroweak symmetry breaking. The underlying strongly coupled gauge theory may be similar to QCD and could be modeled holographically. We construct a bottom-up holographic model for description of the spectrum of composite Higgs particles. The model is based on the holographic Soft Wall model and the Wilson confinement criterion. The constructed model predicts the existence of a second Higgs boson with a mass of about 515 GeV.