It has long been known that nonstrange baryon-meson scattering in the 1 / Nc expansion of QCD greatly simplifies when expressed in terms of t-channel exchanges: The leading-order amplitudes satisfy the selection rule It = Jt. We show that It = Jt, as well as Yt = 0, also hold for the leading amplitudes when the baryon and/or meson contain strange quarks, and also characterize their 1 / Nc corrections, thus opening a new front in the phenomenological study of baryon-meson scattering and baryon resonances.
|Original language||English (US)|
|Number of pages||6|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - Aug 3 2006|
ASJC Scopus subject areas
- Nuclear and High Energy Physics