Renormalization of the Spin-dependent WIMP scattering off nuclei
arXiv:1301.1457
Abstract
We study the amplitude for the spin-dependent WIMP scattering off nuclei by including the leading long-range two-body currents in the most important isovector contribution. We show that such effects are essentially independent of the target nucleus and, as a result, they can be treated as a mere renormalization of the effective nucleon cross section or, equivalently, of the corresponding effective coupling with values around 25%.
15 pages, 4 figures, 2 tables. arXiv admin note: text overlap with arXiv:1211.3214
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