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Nuclear Physics Seminars
Tuesday, October 25, 2005
Physics Building, Room 204
[Host: Donal Day]
"Search for Gluonic Excitations at Jefferson Lab"
One of the great mysteries of modern physics is the mechanism that
confines quarks into hadrons. Quarks are bound together due to the strong
interaction of gluons which themselves carry color charge. Although the
theory of quantum chromodynamics (QCD) describes the interaction, the
solutions can only be approximated at low energies. Nevertheless colored
gluons are expected to bind to each other and form flux tubes, which
lattice QCD predicts will be observable in the particle spectrum as new
excitations called hybrid mesons. We will describe the plans at Jefferson
Lab to double the energy of the machine to 12 GeV, which will allow access
these gluonic excitations experimentally, and describe the apparatus in
the new Hall D which will be used to search for them.
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