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 $3.6~\text{GeV}$.
Primary authors
Mr
Jason Ho
(University of Saskatchewan)
Mr
Ryan Berg
Dr
Derek Harnett
(University of the Fraser Valley)
Dr
Tom Steele
(University of Saskatchewan)
