Bulletin of the American Physical Society
APS April Meeting 2016
Volume 61, Number 6
Saturday–Tuesday, April 16–19, 2016; Salt Lake City, Utah
Session Y2: Recent Advances in Hadron SpectroscopyInvited
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Sponsoring Units: GHP DPF Chair: Raju Venugopalan, Brookhaven National Laboratory Room: Ballroom A |
Tuesday, April 19, 2016 1:30PM - 2:06PM |
Y2.00001: Light Exotic Mesons Invited Speaker: Paul Eugenio tudies of meson spectra via strong decays provide insight regarding QCD at the confinement scale. These studies have led to phenomenological models for QCD such as the constituent quark model. However, QCD allows for a much richer spectrum of meson states which include extra states such as hybrids, exotics, multi-quarks, and glueballs. Within the past two decades a number of experiments have put forth tantalizing evidence for the existence of light quark exotic hybrid mesons in the mass range below $2 ~GeV$. Recent Lattice QCD calculations of the light-quark meson spectrum indicate a constituent gluon-like excitation contributing an additional $J^{PC} = 1^{+-}$ and mass $1-1.5 ~GeV$ resulting in the lightest hybrid nonets with masses near $2.0 ~GeV$. High statistical yields from recent experiments along with new advances in analysis techniques have shed a new light towards the understanding the latest experimental exotic candidates. Recent results from hadro-production and photo-production will be presented followed by an overview of ongoing and future efforts to search for light exotic mesons. [Preview Abstract] |
Tuesday, April 19, 2016 2:06PM - 2:42PM |
Y2.00002: Hadron resonances from QCD Invited Speaker: Jozef Dudek I will discuss recent progress in utilizing lattice QCD techniques in the study of the hadron spectrum. State-of-the-art calculations are now able to determine hadron-hadron scattering amplitudes as a function of energy and to resolve resonant enhancements corresponding to excited hadrons. Going beyond now well-studied simple elastic cases like the $\rho$ resonance in $\pi \pi$ scattering, I will show results for coupled-channel meson-meson scattering, and consider situations in which a current external to QCD is present, illustrated with the first calculation of the amplitude for $\gamma \pi \to \pi \pi$. [Preview Abstract] |
Tuesday, April 19, 2016 2:42PM - 3:18PM |
Y2.00003: Exotic Spectroscopy at LHCb Invited Speaker: Yuanning Gao The recent results on the studies of exotic hadron states from LHCb will be reviewed in this talk. [Preview Abstract] |
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