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The Large N_c Baryon-Meson I_t = J_t Rule Holds for Three Flavors

Richard F. Lebed
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Abstract

It has long been known that nonstrange baryon-meson scattering in the 1/N_c expansion of QCD greatly simplifies when expressed in terms of t-channel exchanges: The leading-order amplitudes satisfy the selection rule I_t = J_t. We show that I_t = J_t, as well as Y_t = 0, also hold for the leading amplitudes when the baryon and/or meson contain strange quarks, and also characterize their 1/N_c corrections, thus opening a new front in the phenomenological study of baryon-meson scattering and baryon resonances.

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Richard F. Lebed. 2006-03-20. The Large N_c Baryon-Meson I_t = J_t Rule Holds for Three Flavors. https://doi.org/10.1016/j.physletb.2006.06.014

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