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Chiral low-energy constants: Status and prospects

AutorPortolés, Jorge
Palabras clavePerturbation theory
Resonance region
[PACS] Expansions for large numbers of components (e.g., 1/Nc expansions)
[PACS] Quantum chromodynamics (QCD)
[PACS] Chiral Lagrangians
Fecha de publicaciónnov-2007
EditorJagiellonian University
Polish Academy of Arts and Sciences
CitaciónActa Physica Polonica B 38(11): 3459-3465 (2007)
ResumenChiral low-energy constants (LECs) carry the information of short-distance dynamics involving heavier degrees of freedom not present in the chiral Lagrangian. Our knowledge of the LECs is all-important at phenomenological level because their relevance in the prediction of hadronic observables at low-energies and, on the other side, because they provide hints on the construction of a dual theory of QCD in the low-energy regime. I review briefly the status of these important couplings.
Descripción7 pages.-- PACS nrs.: 11.15.Pg, 12.38.-t, 12.39.Fe.-- ISI Article Identifier: 000252187200017.-- ArXiv pre-print available at: http://arxiv.org/abs/0710.4405
Presented at the XXXI International Conference of Theoretical Physics, "Matter to the Deepest", Ustroń, Poland, September 5–11, 2007.
Versión del editorhttp://th-www.if.uj.edu.pl/acta/vol38/abs/v38p3459.htm
ISSN0587-4254 (Print)
1509-5770 (Online)
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