Time-Reversal Violation in Threshold $\vec{n}$ $\vec{p}$ Scattering

Abstract

We investigate parity and time-reversal violation in neutron-proton scattering in the optical regime. We calculate the neutron spin rotation and analyzing power in scattering on polarized protons. This allows us to quantify the sensitivity that such experiments should aim for in order to be competitive to present-day measurements of the neutron electric dipole moment in constraining the $P$- and $T$-odd two-nucleon interaction. While state-of-the-art techniques fall short by some three orders of magnitude for the neutron-proton case, specific neutron-nucleus experiments look promising, provided certain experimental and theoretical challenges are met.

10 pages, 2 figures, accepted by Phys. Lett. B

References in corpus (9)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• An accurate nucleon-nucleon potential with charge-independence breaking
• Construction of high-quality Nucleon-Nucleon potential models
• A new limit on the permanent electric dipole moment of ^{199}Hg
• $P$- and $T$-odd two-nucleon interaction and the deuteron electric dipole moment
• Parity-Violating Interaction Effects in the np System
• An Effective Field Theory Calculation of the Parity Violating Asymmetry in n+p -> d+gamma
• Statistical Theory of Parity Nonconservation in Compound Nuclei
• Measurement of parity-nonconserving rotation of neutron spin in the 0.734-eV p-wave resonance of ${}^{139}La$

Cited by in corpus (10)

• Renormalization Group Running of Dimension-Six Sources of Parity and Time-Reversal Violation
• Electric Dipole Moments of Light Nuclei From Chiral Effective Field Theory
• The Effective Chiral Lagrangian From the Theta Term
• Parity-Violating Observables of Two-Nucleon Systems in Effective Field Theory
• The Time-Reversal- and Parity-Violating Nuclear Potential in Chiral Effective Theory
• Violations of discrete space-time symmetries in chiral effective field theory
• Deuteron Magnetic Quadrupole Moment From Chiral Effective Field Theory
• Time Reversal Violation in Light Nuclei
• Strong CP violation in nuclear physics
• Parity nonconserving cold neutron-parahydrogen interactions