THE ADLER-WEISBERGER SUM-RULE IN THE LARGE N(C) LIMIT

Authors
WIRZBA A KIRCHBACH M RISKA DO
Citation
A. Wirzba et al., THE ADLER-WEISBERGER SUM-RULE IN THE LARGE N(C) LIMIT, Journal of physics. G, Nuclear and particle physics, 20(10), 1994, pp. 1583-1589
Citations number
19
Categorie Soggetti
Physics, Particles & Fields","Physics, Nuclear
Journal title
Journal of physics. G, Nuclear and particle physics → ACNP
ISSN journal
09543899
Volume
20
Issue
10
Year of publication
1994
Pages
1583 - 1589
Database
ISI
SICI code
0954-3899(1994)20:10<1583:TASITL>2.0.ZU;2-C
Abstract
We determine the N(c) dependence of the resonance contributions to the Adler-Weisberger sum rule for the inverse square of the axial charge- coupling constant, and show that in the large N(c) limit the contribut ions of the radially excited even-parity resonances, as the P11 and P' 33 excitations, scale as O(1/N(c)). Consistency with the 1/N(c)2 scali ng of the 1/g(A)2 term in the sum rule requires these contributions to cancel each other out.