Abstract
Corrections to meson/ground-state baryon scattering amplitudes in the 1/N c expansion of QCD have previously been shown to be controlled by the t-channel difference |I t-J t| of isospin and angular momentum and by the change of hypercharge Y t. Here we derive the corresponding expressions in the original scattering s channel, allowing for nonzero meson spin and nontrivial SU(3) flavor quantum numbers, and provide explicit examples of the crossing relevant for πN ρN and KN scattering.
Original language | English (US) |
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Article number | 046 |
Journal | Journal of High Energy Physics |
Volume | 2007 |
Issue number | 10 |
DOIs | |
State | Published - Oct 1 2007 |
Keywords
- 1/N expansion
- QCD
ASJC Scopus subject areas
- Nuclear and High Energy Physics