Limits on CP-odd four-fermion operators containing the strange quark field

Hamzaoui, C. et Pospelov, M. (1999). « Limits on CP-odd four-fermion operators containing the strange quark field ». Physical Review D, 60(036003).

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Résumé

The bounds on the neutron electric dipole moment and T-odd nucleon-nucleon interaction are used to extract the limits on the effective CP-odd four-fermion operators containing a strange quark field. This completes the study of the dim=5,6 CP-odd operators built from light-quark fields. The limits are very strong and comparable to those obtained previously for operators containing up and down flavors. We also analyze the shift of the axionic vacuum, θeff, induced by four-fermion operators in the presence of the PQ mechanism and conclude that this gives subleading contributions to CP-odd observables as compared with the direct ones.

Type: Article de revue scientifique
Informations complémentaires: Source: http://arxiv.org/abs/hep-ph/9901363v1
Mots-clés ou Sujets: T invariance, CP invariance, neutrons, electric dipole moments, S quarks, nucleon-nucleon interactions, mercury, thalium
Unité d'appartenance: Faculté des sciences > Département des sciences de la Terre et de l'atmosphère
Déposé par: Chérif Hamzaoui
Date de dépôt: 29 avr. 2016 15:25
Dernière modification: 26 mai 2016 14:30
Adresse URL : http://www.archipel.uqam.ca/id/eprint/8377

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