A Fresh Look into the Neutron EDM and Magnetic Susceptibility

Understand

We reexamine the estimate of the neutron Electric Dipole Moment (NEDM) from chiral and QCD spectral sum rules (QSSR) approaches.

• In the former, we evaluate the pion mass corrections which are about 5% of the leading Log.
• results.
• However, the chiral estimate can be affected by the unknown value of the renormalizaton scale nu.