Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/33124
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Title

Odd-intrinsic-parity processes within the resonance effective theory of QCD

AuthorsRuiz Femenía, Pedro CSIC; Pich, Antonio CSIC ORCID; Portolés, Jorge CSIC ORCID
KeywordsChiral lagrangians
1/N Expansion
QCD
Global symmetries
Issue Date14-Jul-2003
PublisherInstitute of Physics Publishing
CitationJournal of High Energy Physics (7): 003 (2003)
AbstractWe analyse the most general odd-intrinsic-parity effective Lagrangian of QCD valid for processes involving one pseudoscalar with vector mesons described in terms of antisymmetric tensor fields. Substantial information on the odd-intrinsic-parity couplings is obtained by constructing the vector-vector-pseudoscalar Green's three-point function, at leading order in 1/Nc, and demanding that its short-distance behaviour matches the corresponding OPE result. The QCD constraints thus enforced allow us to predict the decay amplitude omega -> pion gamma, and the O(p^6) corrections to pion -> gamma gamma. Noteworthy consequences concerning the vector meson dominance assumption in the decay omega -> 3 pions are also extracted from the previous analysis.
Description19 páginas, 4 figuras.-- arXiv:hep-ph/0306157v1
Publisher version (URL)http://dx.doi.org/10.1088/1126-6708/2003/07/003
URIhttp://hdl.handle.net/10261/33124
DOI10.1088/1126-6708/2003/07/003
ISSN1126-6708
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