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Title

Strong CP-violation in an effective chiral lagrangian approach

AuthorsPich, Antonio CSIC ORCID; Rafael, Eduardo de
Issue Date23-Dec-1991
PublisherElsevier
CitationNuclear Physics B 367(2): 313-333 (1991)
AbstractPossible long-distance effects like η → ππ and the electric dipole moment of the neutron (nEDM), which may originate in the strong CP-non-conserving sector of QCD, are re-examined in the light of an effective chiral lagrangian approach. Contrary to recent claims, we show that it is possible to obtain reliable estimates for these processes from chiral symmetry and low-energy phenomenology (modulo the size of the θ-vacuum angle, of course). We also discuss how an improvement of the presented estimate of the nEDM could be made, if necessary.
Description21 páginas, 2 figuras.-- CERN-TH-6071-91
Publisher version (URL)http://dx.doi.org/10.1016/0550-3213(91)90019-T
URIhttp://hdl.handle.net/10261/33360
DOI10.1016/0550-3213(91)90019-T
ISSN0550-3213
Appears in Collections:(IFIC) Artículos




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