Article ID Journal Published Year Pages File Type
9861696 Physics Letters B 2005 6 Pages PDF
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.
Related Topics
Physical Sciences and Engineering Physics and Astronomy Nuclear and High Energy Physics
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