Chiral estimate of the electric dipole moment of the neutron in quantum chromodynamics

R. J. Crewther, P. Di Vecchia, G. Veneziano, E. Witten

Research output: Contribution to journalArticlepeer-review

623 Scopus citations

Abstract

Current algebra for CP violating strong interactions is investigated. In particular, the neutron electric dipole moment Dn is shown to behave as θmπ21nmπ2 for small pion mass mπ and CP violating parameter θ. This logarithm is explicitly calculable: it contributes 5.2×10-16θ cm to Dn. This result is somewhat larger than a previous O(mπ2) estimate based on the bag model.

Original languageEnglish (US)
Pages (from-to)123-127
Number of pages5
JournalPhysics Letters B
Volume88
Issue number1-2
DOIs
StatePublished - Dec 3 1979
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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