2018 CAP Congress / Congrès de l'ACP 2018

Masses of Light Quarkonium $0^{+-}$ Hybrids from Gaussian Sum-Rules

12 Jun 2018, 08:30

15m

SUB 224 (cap.50) (Dalhousie University)

Oral (Non-Student) / Orale (non-étudiant(e)) Particle Physics / Physique des particules (PPD) T1-5 Quirks and Quarks (PPD/DTP) I « Quirks » et quarks (PPD/DPT)

Speaker

Dr Derek Harnett (University of the Fraser Valley)

Description

We compute masses of light quarkonium and strangeonium $0^{+-}$ hybrids using Gaussian sum-rules. Correlation functions account for condensates up to dimension-six and are calculated at leading-order in $\alpha_s$. Our analysis indicates that the resonance signal strength in this channel is distributed over a wide range, inconsistent with a single narrow resonance. A single wide resonance is also disfavoured as the resonance width would have to be extremely large. Using a double narrow resonance model, we find excellent agreement between QCD and hadron phenomenology, and extract mass predictions of $2.6~\text{GeV}$ and $3.6~\text{GeV}$.