Spin polarization observables of the deuteron photodisintegration at low energies in pionless effective field theory

Abstract

Spin polarization observables of the deuteron photodisintegration at low energies are studied in a pionless effective field theory up to next-to-next-to-leading order (NNLO). The total and differential cross sections, induced neutron polarization $P_{y^{\prime }}$, and tensor analyzing powers $T_{20}$ and $T_{22}$ of the process are calculated at photon energies from the breakup threshold to 20~MeV. We find that the NNLO corrections in the cross sections and $P_{y^{\prime }}$ converge well whereas they turn out to be important contributions in $T_{20}$ and $T_{22}$. We discuss the discrepancy between theory and experiment in $P_{y^{\prime }}$ still persisting as well as an implication of our result to the first measurement of $T_{20}$ at low energies in the HIGS facility.

To be published in Physical Review C

References in corpus (2)

• Pion-less Effective Field Theory on Low-Energy Deuteron Electro-Disintegration
• Spin Polarization in $\gamma d\to \vec{n}p$ at Low Energies with a Pionless Effective Field Theory

Cited by in corpus (4)

• Nuclear effective field theory: status and perspectives
• Radiative Capture of Cold Neutrons by Protons and Deuteron Photodisintegration with Twisted Beams
• Neutrino-Deuteron Reactions at Solar Neutrino Energies in Pionless Effective Field Theory with Dibaryon Fields
• Analysis of elastic $\alpha$-${}^{12}$C scattering with global optimization in the cluster effective field theory