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SUMMARY:Probing the Structure of Hadrons -- Kanzo Nakayama
DESCRIPTION:Departmental Colloquium. Dr. Michael Geller will be hosting Dr. Kanzo Nakayama of the University of Georgia Department of Physics and Astronomy this week. His talk is entitled, "Probing the Structure of Hadrons."Quantum Chromodynamics (QCD) is believed to be the correct theory of strong interactions. The basic
degrees-of-freedom of QCD are the quarks which interact with each other by exchanging gluons due to ”color”
charges. This is analogous to Quantum Electrodynamics (QED), the theory of electromagnetic interaction, where the
electrons interact with each other by exchanging photons due to electric charges. Quarks come in three independent
color states. One of the three fundamental properties of QCD is known as the confinement, which is the mechanism
behind the fact that only color neutral particles are observed isolated in nature. Since quarks are colored particles,
the simplest color neutral particles are composed of quark-antiquark or 3-quark configurations. The former type of
particles are known as mesons and the latter as baryons; collectively, they are known as hadrons.
While two of the three fundamental properties of QCD are well understood, the confining mechanism of
quarks which results in physically observable particles (hadrons) still awaits a full understanding. In order to obtain
a deeper insight into this problem, a detailed experimental and theoretical investigation of hadron spectroscopy is
imperative.
In order to extract relevant physics information from the experimental data on hadron spectroscopy taken at
the major laboratories worldwide, a consistent reaction theory capable of quantitative predictions of the reaction
processes induced by both electromagnetic and hadronic probes is required. In this talk, an overview of the activities
at UGA in this field will be given.
LOCATION:Physics 202
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