The Electric Dipole Form Factor of the Nucleon in Chiral Perturbation Theory to Sub-leading Order

The electric dipole form factor (EDFF) of the nucleon stemming from the QCD theta term and from the quark color-electric dipole moments is calculated in chiral perturbation theory to sub-leading order. This is the lowest order in which the isoscalar EDFF receives a calculable, non-analytic contribut...

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Autores principales: Mereghetti, E, de Vries, J, Hockings, W H, Maekawa, C M, van Kolck, U
Lenguaje:eng
Publicado: 2010
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2010.12.018
http://cds.cern.ch/record/1301578
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author Mereghetti, E
de Vries, J
Hockings, W H
Maekawa, C M
van Kolck, U
author_facet Mereghetti, E
de Vries, J
Hockings, W H
Maekawa, C M
van Kolck, U
author_sort Mereghetti, E
collection CERN
description The electric dipole form factor (EDFF) of the nucleon stemming from the QCD theta term and from the quark color-electric dipole moments is calculated in chiral perturbation theory to sub-leading order. This is the lowest order in which the isoscalar EDFF receives a calculable, non-analytic contribution from the pion cloud. In the case of the theta term, the expected lower bound on the deuteron electric dipole moment is |d_d| > 1.4 10^(-4) \theta e fm. The momentum dependence of the isovector EDFF is proportional to a non-derivative time-reversal-violating pion-nucleon coupling, and the scale for momentum variation ---appearing, in particular, in the radius of the form factor--- is the pion mass.
id cern-1301578
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2010
record_format invenio
spelling cern-13015782019-09-30T06:29:59Zdoi:10.1016/j.physletb.2010.12.018http://cds.cern.ch/record/1301578engMereghetti, Ede Vries, JHockings, W HMaekawa, C Mvan Kolck, UThe Electric Dipole Form Factor of the Nucleon in Chiral Perturbation Theory to Sub-leading OrderParticle Physics - PhenomenologyThe electric dipole form factor (EDFF) of the nucleon stemming from the QCD theta term and from the quark color-electric dipole moments is calculated in chiral perturbation theory to sub-leading order. This is the lowest order in which the isoscalar EDFF receives a calculable, non-analytic contribution from the pion cloud. In the case of the theta term, the expected lower bound on the deuteron electric dipole moment is |d_d| > 1.4 10^(-4) \theta e fm. The momentum dependence of the isovector EDFF is proportional to a non-derivative time-reversal-violating pion-nucleon coupling, and the scale for momentum variation ---appearing, in particular, in the radius of the form factor--- is the pion mass.arXiv:1010.4078CERN-PH-TH-2010-180oai:cds.cern.ch:13015782010-10-21
spellingShingle Particle Physics - Phenomenology
Mereghetti, E
de Vries, J
Hockings, W H
Maekawa, C M
van Kolck, U
The Electric Dipole Form Factor of the Nucleon in Chiral Perturbation Theory to Sub-leading Order
title The Electric Dipole Form Factor of the Nucleon in Chiral Perturbation Theory to Sub-leading Order
title_full The Electric Dipole Form Factor of the Nucleon in Chiral Perturbation Theory to Sub-leading Order
title_fullStr The Electric Dipole Form Factor of the Nucleon in Chiral Perturbation Theory to Sub-leading Order
title_full_unstemmed The Electric Dipole Form Factor of the Nucleon in Chiral Perturbation Theory to Sub-leading Order
title_short The Electric Dipole Form Factor of the Nucleon in Chiral Perturbation Theory to Sub-leading Order
title_sort electric dipole form factor of the nucleon in chiral perturbation theory to sub-leading order
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.physletb.2010.12.018
http://cds.cern.ch/record/1301578
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