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Title

Weak K-amplitudes in the chiral and 1/Nc-expansions

AuthorsPich, Antonio CSIC ORCID; Rafael, Eduardo de
Issue DateMay-1996
PublisherElsevier
CitationPhysics Letters B 374(1-3): 186-192 (1996)
AbstractIt is shown that there exist symmetry constraints for non-leptonic weak amplitudes which emerge when the 1/Nc-expansion restricted to the leading and next-to-leading approximations only is systematically combined with χPT limited to the lowest non-trivial order. We discuss these constraints for the couplings g8 and g27 of ΔS = 1 transitions and the BK-parameter of $K^0-{\bar K}^0$ mixing.
Description7 páginas, 2 figuras.-- arXiv:hep-ph/9511465v1
Publisher version (URL)http://dx.doi.org/10.1016/0370-2693(96)00171-2
URIhttp://hdl.handle.net/10261/33266
DOI10.1016/0370-2693(96)00171-2
ISSN0370-2693
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