Speaker
Derek Harnett
(University of the Fraser Valley)
Description
The Y(2175) resonance was first observed in an initial state radiation process by the BaBar Collaboration. It was later confirmed by the BES, Belle, and BESIII collaborations. A conventional strangeonium meson interpretation of the Y(2175) is disfavoured due to the resonance's relatively narrow width and unexpected decay patterns. As such, it may be an outside-the-quark-model hadron, e.g., a hybrid, tetraquark, and/or meson molecule. We use Gaussian sum-rules---a variant of QCD sum-rules well-suited to studying multi-resonance models---to investigate possible strangeonium hybrid content of the Y(2175).
Primary authors
Derek Harnett
(University of the Fraser Valley)
Jason Ho
(University of Saskatchewan)
Mr
Ryan Berg
Tom Steele
(U of Saskatchewan)
Wei Chen
(Sun Yat-sen University)
