Large-scale nuclear structure calculations for spin-dependent WIMP scattering with chiral effective field theory currents
Abstract
We perform state-of-the-art large-scale shell-model calculations of the structure factors for elastic spin-dependent WIMP scattering off 129,131Xe, 127I, 73Ge, 19F, 23Na, 27Al, and 29Si. This comprehensive survey covers the non-zero-spin nuclei relevant to direct dark matter detection. We include a pedagogical presentation of the formalism necessary to describe elastic and inelastic WIMP-nucleus scattering. The valence spaces and nuclear interactions employed have been previously used in nuclear structure calculations for these mass regions and yield a good spectroscopic description of these isotopes. We use spin-dependent WIMP-nucleus currents based on chiral effective field theory (EFT) at the one-body level and including the leading long-range two-body currents due to pion exchange, which are predicted in chiral EFT. Results for all structure factors are provided with theoretical error bands due to the nuclear uncertainties of WIMP currents in nuclei.
Keywords
Cite
@article{arxiv.1304.7684,
title = {Large-scale nuclear structure calculations for spin-dependent WIMP scattering with chiral effective field theory currents},
author = {P. Klos and J. Menéndez and D. Gazit and A. Schwenk},
journal= {arXiv preprint arXiv:1304.7684},
year = {2015}
}
Comments
25 pages, 13 figures. Version v4 with small typos corrected in Eqs.(8),(10),(20) and in the Appendix