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

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

doi:10.1016/0370-2693(79)90128-X

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

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

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Abstract

Current algebra for CP violating strong interactions is investigated. In particular, the neutron electric dipole moment D_n is shown to behave as θm_π²1nm_π² for small pion mass m_π and CP violating parameter θ. This logarithm is explicitly calculable: it contributes 5.2×10^-16θ cm to D_n. This result is somewhat larger than a previous O(m_π²) estimate based on the bag model.

Original language	English (US)
Pages (from-to)	123-127
Number of pages	5
Journal	Physics Letters B
Volume	88
Issue number	1-2
DOIs	https://doi.org/10.1016/0370-2693(79)90128-X
State	Published - Dec 3 1979
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/0370-2693(79)90128-X

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title = "Chiral estimate of the electric dipole moment of the neutron in quantum chromodynamics",

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.",

author = "Crewther, {R. J.} and {Di Vecchia}, P. and G. Veneziano and E. Witten",

year = "1979",

month = dec,

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doi = "10.1016/0370-2693(79)90128-X",

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T1 - Chiral estimate of the electric dipole moment of the neutron in quantum chromodynamics

AU - Crewther, R. J.

AU - Di Vecchia, P.

AU - Veneziano, G.

AU - Witten, E.

PY - 1979/12/3

Y1 - 1979/12/3

N2 - 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.

AB - 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.

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DO - 10.1016/0370-2693(79)90128-X

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EP - 127

JO - Physics Letters B

JF - Physics Letters B

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ER -

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

Abstract

All Science Journal Classification (ASJC) codes

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