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Weakly-induced strong CP-violation

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Gérard, Jean-Marc [UCL] Mertens, Philippe [UCL]

Weak interaction contributions to the strong θ parameter are revisited in the frame of a large-Nc Chiral Perturbation Theory. Focusing on the hadronic η→ππ amplitudes, we express these second-order corrections in terms of the CP-violating parameter in K→ππ decays to obtain Δwθ≈10-17 at O(GF2ε‧).

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès libre
Publication date 2012
Language Anglais
Journal information "Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics" - Vol. 716, no. 2, p. 316-321 (2012)
Peer reviewed yes
Publisher Elsevier BV * North-Holland ((Netherlands) Amsterdam)
issn 0370-2693
e-issn 1873-2445
Publication status Publié
Affiliations UCL - SST/IRMP - Institut de recherche en mathématique et physique
UCL - SSS/IONS/NEUR - Clinical Neuroscience
UCL - (SLuc) Service d'oto-rhino-laryngologie
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Bibliographic reference Gérard, Jean-Marc ; Mertens, Philippe. Weakly-induced strong CP-violation. In: Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 716, no. 2, p. 316-321 (2012)
Permanent URL http://hdl.handle.net/2078.1/117418