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Baryon exotics in the quark model, the skyrme model, and QCD
Elizabeth Jenkins1, Aneesh V Manohar
1Department of Physics, University of California at San Diego, La Jolla, California 92093, USA.
Abstract:
We derive the quantum numbers of baryon exotics in the quark model and the Skyrme model and show that they agree for arbitrary colors and flavors. We define exoticness E, which can be used to classify the states. The exotic baryons include the recently discovered qqqqq pentaquarks (E=1), as well as exotic baryons with additional qq pairs (E>/=1). The mass formula for nonexotic and exotic baryons is given as an expansion in 1/N(c) and allows one to relate the moment of inertia of the Skyrme soliton to the mass of a constituent quark.
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