Neutron electric dipole moment from electric and chromoelectric dipole moments of quarks

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Abstract

Using QCD sum rules, we calculate the electric dipole moment of the neutron dn induced by all CP violating operators up to dimension five. We find that the chromoelectric dipole moments of quarks d̃i, including that of the strange quark, provide significant contributions comparable in magnitude to those induced by the quark electric dipole moments di. When the theta terra is removed via the Peccei-Quinn symmetry, the strange quark contribution is also suppressed and dn = (1 ± 0.5) {0.55e(d̃d + 0.5d̃u) + 0.7 (dd - 0.25du)}.

Original languageEnglish (US)
Article number073015
Number of pages5
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume63
Issue number7
DOIs
StatePublished - Aug 15 2001

Bibliographical note

Copyright:
Copyright 2006 Elsevier B.V., All rights reserved.

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