TY - JOUR
T1 - Phenomenology of large Nc QCD
AU - Lebed, Richard F.
N1 - Funding Information:
Many thanks to the organizers and students for making the summer school a success. I would especially like to acknowledge C. Carlson, 0. Carone, and J. Goity for comments on this manuscript. This work was supported by the U.S. Department of Energy under contract No. DE-AC05-84ER40150.
PY - 1999/9
Y1 - 1999/9
N2 - These lectures are designed to introduce the methods and results of large Nc QCD in a presentation intended for nuclear and particle physicists alike. Beginning with definitions and motivations of the approach, we demonstrate that all quark and gluon Feynman diagrams are organized into classes based on powers of 1/Nc. We then show that this result can be translated into definite statements about mesons and baryons containing arbitrary numbers of constituents. In the mesons, numerous well-known phenomenological properties follow as immediate consequences of simply counting powers of Nc, while for the baryons, quantitative large Nc analyses of masses and other properties are seen to agree with experiment, even when "large" Nc is set equal to its observed value of 3. Large Nc reasoning is also used to explain some simple features of nuclear interactions.
AB - These lectures are designed to introduce the methods and results of large Nc QCD in a presentation intended for nuclear and particle physicists alike. Beginning with definitions and motivations of the approach, we demonstrate that all quark and gluon Feynman diagrams are organized into classes based on powers of 1/Nc. We then show that this result can be translated into definite statements about mesons and baryons containing arbitrary numbers of constituents. In the mesons, numerous well-known phenomenological properties follow as immediate consequences of simply counting powers of Nc, while for the baryons, quantitative large Nc analyses of masses and other properties are seen to agree with experiment, even when "large" Nc is set equal to its observed value of 3. Large Nc reasoning is also used to explain some simple features of nuclear interactions.
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U2 - 10.1023/A:1022820227262
DO - 10.1023/A:1022820227262
M3 - Article
AN - SCOPUS:0033433227
SN - 0011-4626
VL - 49
SP - 1273
EP - 1306
JO - Czechoslovak Journal of Physics
JF - Czechoslovak Journal of Physics
IS - 9
ER -