TY - JOUR
T1 - The large Nc baryon-meson It = Jt rule holds for three flavors
AU - Lebed, Richard
N1 - Funding Information:
I thank Tom Cohen for enlightening comments and the very successful collaboration that made this project possible. This work supported in part by the N.S.F. through grant No. PHY-0456520.
Copyright:
Copyright 2006 Elsevier B.V., All rights reserved.
PY - 2006/8/3
Y1 - 2006/8/3
N2 - 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.
AB - 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.
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U2 - 10.1016/j.physletb.2006.06.014
DO - 10.1016/j.physletb.2006.06.014
M3 - Article
AN - SCOPUS:33745931383
VL - 639
SP - 68
EP - 73
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 2
ER -