The electric dipole form factor of the nucleon

W. H. Hockings, Ubirajara Van Kolck

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Abstract

The electric dipole form factor of the nucleon stemming from the QCD θ term is calculated in chiral perturbation theory in leading order. To this order, the form factor originates from the pion cloud. Its momentum-dependence 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.

Original languageEnglish (US)
Pages (from-to)273-278
Number of pages6
JournalPhysics Letters B
Volume605
Issue number3-4
DOIs
Publication statusPublished - Jan 13 2005

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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