Title of article :
P- and T-violating πNN form factor Original Research Article
Author/Authors :
S. Kondratyuk، نويسنده , , P.G. Blunden، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2007
Pages :
14
From page :
351
To page :
364
Abstract :
The form factor of the parity and time-reversal violating (PTV) pion–nucleon interaction is calculated from one-loop vertex diagrams. The degrees of freedom included in the effective Lagrangian are nucleons, pions, η, ρ and ω mesons. We show that by studying the form factor one can constrain the PTV meson–nucleon coupling constants. We evaluate the mean square radius associated with the PTV πNN vertex. Using the mean square radius, we estimate the effect of the PTV πNN vertex on the neutron electric dipole moment, and find a very small correction. We also extract the renormalisation group β function and use it to discuss evolution of the PTV πNN coupling constant beyond the hadronic mass scale.
Journal title :
Nuclear physics A
Serial Year :
2007
Journal title :
Nuclear physics A
Record number :
1203422
Link To Document :
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