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)|
|Journal||Journal of High Energy Physics|
|State||Published - Oct 1 2007|
- 1/N expansion
ASJC Scopus subject areas
- Nuclear and High Energy Physics