Effective Masses of Diquarks |
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Authors: | P Maris |
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Institution: | (1) Department of Physics, North Carolina State University, Raleigh, NC 27695-8202, USA, US |
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Abstract: | We study meson and diquark bound states using the rainbow-ladder truncation of QCD’s Dyson-Schwinger equations. The infrared
strength of the rainbow-ladder kernel is described by two parameters. The ultraviolet behavior is fixed by the one-loop renormalization
group behavior of QCD, which ensures the correct asymptotic behavior of the Bethe-Salpeter amplitudes and brings important
qualitative benefits. The diquark with the lowest mass is the scalar, followed by the axialvector and pseudoscalar diquark.
This ordering can be anticipated from the meson sector.
Received March 4, 2002; accepted April 5, 2002 Published online June 24, 2002 |
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Keywords: | |
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