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Large-Nc estimate of the chiral low-energy constants

AuthorsPortolés, Jorge
Quantum chromodynamics (QCD)
[PACS] Expansions for large numbers of components (e.g., 1/Nc expansions)
[PACS] Chiral Lagrangians
Issue DateSep-2007
PublisherJagiellonian University
Polish Academy of Arts and Sciences
CitationActa Physica Polonica B 38(9): 2789-2796 (2007)
AbstractChiral low-energy constants incorporate short-distance information from the dynamics involving heavier degrees of freedom not present in the chiral Lagrangian. We have studied the contribution of the lightest resonances to the chiral low-energy constants, up to O(p^6), within a systematic procedure guided by the large-Nc limit of QCD and also including short-distance asymptotic constraints.
Description8 pages, 1 figure.-- PACS nrs.: 11.15.Pg, 12.38.–t, 12.39.Fe.-- ISI Article Identifier: 000249819800009.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ph/0702179
Talk given at the Final Euridice Meeting "Effective Theories of colours and flavours : from EURODAPHNE to EURIDICE", 24th-27th August 2006, Kazimierz (Poland).
Publisher version (URL)http://th-www.if.uj.edu.pl/acta/vol38/pdf/v38p2789.pdf
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