# XIIIth Quark Confinement and the Hadron Spectrum

31 July 2018 to 6 August 2018
Maynooth University
Europe/Dublin timezone

## Searching for beauty-fully bound tetraquarks using lattice Non-relativistic QCD

2 Aug 2018, 14:20
20m
Hall H (Arts Bldg.)

### Hall H

#### Arts Bldg.

Invited talk C: Heavy quarks

Ciaran Hughes

### Description

Recently, an unapproved CMS study indicates that there appears to be a QCD bound state approximately 300MeV below the 2$\eta_b$ threshold. An obvious candidate for this would be a stable (in QCD) four quark bound-state composed of two bottom-quarks and two anti-bottom quarks: $bb\bar{b}\bar{b}$. This system has generated significant attention in the literature from model-dependent calculations. This talk will discuss the exciting search for this tetraquark state using the first-principles lattice QCD methodology and give a conclusive statement about the existence of such a tetraquark.

### Primary authors

Dr Estia Eichten (Fermilab) Dr Christine Davies (University of Glasgow)