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arXiv · 1701.07163

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

Young-Ho Song·Shung-Ichi Ando·Chang Ho Hyun
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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 $P_{y'}$, 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 $P_{y'}$ 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 $P_{y'}$ still persisting as well as an implication of our result to the first measurement of $T_{20}$ at low energies in the HIGS facility.

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Young-Ho Song, Shung-Ichi Ando, Chang Ho Hyun. 2017-06-24. Spin polarization observables of the deuteron photodisintegration at low energies in pionless effective field theory. https://doi.org/10.1103/physrevc.96.014001

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