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Meson-Baryon Scattering in QCD_2 for any Coupling

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arxiv hep-ph/0305292 v2 pith:BN2VK2D5 submitted 2003-05-26 hep-ph hep-th

John Ellis (CERN) , Yitzhak Frishman (Weizmann Inst.) , Marek Karliner (Tel-Aviv Univ.) This is my paper · ORCID
classification hep-phhep-th
keywords meson-baryonscatteringcouplingactionamplitudescasescolourconstant
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Extending earlier work on strong-coupling meson-baryon scattering in QCD_2, we derive the effective meson-baryon action for any value of the coupling constant, in the large-N_c limit. Colour degrees of freedom play an important role, and we show that meson-baryon scattering can be formulated as a relativistic potential problem. We distinguish two cases that are non-trivial for unequal quark masses, and present the resulting equations for meson-baryon scattering amplitudes.

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  1. Meson spectrum in $QCD_2$ revisited

    hep-th 2019-08 accept novelty 5.0 of 10

    Adding VSR-style Lorentz-invariant terms to two-dimensional QCD does not alter the 't Hooft meson spectrum; a gluon-mass regulator recovers the standard equation in the zero-mass limit.

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