Time reversal invariance violating and parity conserving effects in neutron-deuteron scattering

Abstract

Time reversal invariance violating parity conserving effects for low energy elastic neutron deuteron scattering are calculated for meson exchange and EFT-type of potentials in a Distorted Wave Born Approximation, using realistic hadronic wave functions, obtained by solving three-body Faddeev equations in configuration space.

Time reversal invariance violating and parity conserving effects in proton-deuteron scattering

“…Calculations based on INOY NN interaction deviate from the AV18 case by 10% -20%. It should be noted that similar discrepancies with INOY potential was also observed in our previous calculations [1,6,14] of parity and time reversal violating effects in neutron deuteron interactions. This issue is clearly related with a softness of INOY potential and the qualitative difference of calculated nuclear wave functions at the short distance.…”

“…To compare TVPC effects in proton-deuteron scattering with the case of neutron-deuteron scattering, we include the corresponding TVPC scattering amplitudes of neutron-deuteron scattering at E cm = 100 KeV in the last line of table I. Note that there is a convention difference with [1], and unpolarized total proton-deuteron cross section can be written as σ el tot = 1 2 4π p Im(f + + f − )(E, θ = 0). To test how TVPC amplitudes depend on the choice of strong interaction potential we calculated them with three different phenomenological potentials AV18, AV18UIX and INOY.…”

“…Therefore, an observation of TVPC effects can be interpreted as a direct signal of new physics. TVPC effects in neutron-deuteron scattering have been calculated recently [1]. In this paper we consider similar effects of TVPC interaction in proton-deuteron scattering which are related to σ p • [p × I](p • I) correlation with tensor polarized target , where σ p is the proton spin, I is the target spin and p is the proton momentum.…”

“…We consider TVPC effects for proton energy range up to 2 MeV which could be calculated accurately in a formally exact framework based on Faddeev-Merkuriev equations [5] with realistic potentials. This gives an opportunity to compare directly these TVPC effects with the case of TVPC [1] effects in neutron-deuteron scattering, as well as to the cases of parity violation in proton-deuteron and neutron-deuteron [6] scattering.…”

Standard model contribution to the electric dipole moment of the deuteron, 3H, and 3He nuclei

“…Recently, the measurement of Tviolating neutron scattering using the spallation neutron source is being prepared at Oak Ridge National Laboratory Laboratory and at J-PARC. Quantitative theoretical studies of the CP violating neutron scattering off nuclear target have also begun, starting from the simplest neutron-deuteron system [201][202][203]. Here the SM contribution will also be an important systematics which have to be controlled.…”