Quarkonium Resonance Model of the 125 GeV Boson

TL;DR

This paper proposes a quarkonium resonance model for the 125 GeV boson, identifying it as a mixed state of bottomonium and toponium, and discusses its decay properties and parity based on recent experimental data.

Contribution

It introduces a novel quarkonium mixing model for the 125 GeV boson, linking it to bottomonium and toponium states and analyzing its decay modes and parity.

Findings

The 125 GeV boson is modeled as a mixed state of bottomonium and toponium.

The model predicts a heavier resonance at 230 GeV, identified as $$.

Analysis of decay data supports the quarkonium resonance interpretation.

Abstract

A quarkonium model of the recently discovered X boson at 125 GeV is investigated. Two isosinglet $J^{PC}=0^{-+}$ resonances $\zeta$ and $\zeta'$ mix and their masses are determined by the masses of the bottomonium and toponium eigenstates. This mixing is enhanced by the non-perturbative gluon interaction produced by an axial $U_A(1)$ anomaly. The resonance $\zeta$ is identified with the 125 GeV boson X, while the heavier $\zeta'$ resonance has a mass 230 GeV. We assess the most recent data for the decay mode $X\rightarrow ZZ^*\rightarrow$ 4 leptons with a critical discussion of the determination of the parity of the $X$ boson.