Chiral Low-Energy Constants: Status and Prospects
arXiv:0710.4405
Abstract
Chiral 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.
7 pages. Talk given at the 31st International Conference of Theoretical Physics, 5-11 Sep 2007, Ustron (Katowice, Poland)
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