CP-violation in Compton scattering

Abstract

I consider Compton scattering off the nucleon in the presence of $CP$ violation. I construct the Compton tensor which possesses these features and consider low energy expansion (LEX) of the corresponding amplitudes. It allows to separate out the Born contribution which only depends on the static properties of the nucleon, such as the electric charge, the mass, the magnetic moment, and the electric dipole moment (EDM). I introduce new structure constants, the $T$-odd nucleon polarizabilities which parametrize the unknown non-Born part. These constants describe the response of the $T$-violating content of the nucleon to the external quasistatic electromagnetic field. As an estimate, I provide a HBChPT calculation for these new polarizabilities and discuss the implications for the experiment.

7 pages, 5 figures, revtex

References in corpus (8)

• An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
• Measurement of the electron electric dipole moment using YbF molecules
• The electric dipole form factor of the nucleon
• Proposal for a sensitive search for electric dipole moment of electron with matrix-isolated radicals
• Parity Violation in gamma proton Compton Scattering
• Parity Violation in Polarized-Gamma Proton Compton Scattering
• Atomic CP-violating polarizability
• Molecular CP-violating magnetic moment

Cited by in corpus (5)

• The Effective Chiral Lagrangian From the Theta Term
• Expanding Nuclear Physics Horizons with the Gamma Factory
• Dispersive Light Propagation at Cosmological Distances: Matter Effects
• Two-photon interactions with Majorana fermions
• Aligning a Majorana fermion's anapole moment with an external current through photon emission mediated by the fermion's generalized polarizabilities