Heavy QQ(bar) "Fireball" Annihilation to Multiple Vector Bosons

TL;DR

This paper models the annihilation of heavy quark pairs into multiple longitudinal weak bosons at the LHC, using an analogy with nucleon-pion interactions, and predicts high multiplicity outcomes for TeV-scale quarks.

Contribution

It introduces a statistical model for heavy quark pair annihilation into multiple vector bosons, highlighting the significance of strong Yukawa coupling at TeV scales.

Findings

Mean number of bosons ranges from 6 to over 10 for quark masses 1-2 TeV.

Two or three boson production is negligible.

Qar Q o nV_L is the dominant process for very heavy quarks at the LHC.

Abstract

Drawing analogy of replacing the nucleon by heavy chiral quark $Q$, the pion by Goldstone boson $G$, and $\pi NN$ coupling by $GQQ$ coupling, we construct a statistical model for $Q\bar Q \to nG$ annihilation, i.e. into $n$ longitudinal weak bosons. This analogy is becoming prescient since the LHC direct bound $m_Q > 611$ GeV implies strong Yukawa coupling. Taking $m_Q \in (1, 2)$ TeV, the mean number $<n_G>$ ranges from 6 to over 10, with negligible two or three boson production. With individual $t'$ or $b'$ decays suppressed either by phase space or quark mixing, and given the strong Yukawa coupling, $Q\bar Q\to nV_L$ is the likely outcome for very heavy $Q\bar Q$ production at the LHC.