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Effective Masses of Diquarks

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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.

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  1. Department of Physics, North Carolina State University, Raleigh, NC 27695-8202, USA, , , , , , US

    P. Maris

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  1. P. Maris
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Received March 4, 2002; accepted April 5, 2002 Published online June 24, 2002

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Maris, P. Effective Masses of Diquarks. Few-Body Systems 32, 41–52 (2002). https://doi.org/10.1007/s00601-002-0111-7

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  • DOI: https://doi.org/10.1007/s00601-002-0111-7

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