Weak mixing below the weak scale in dark-matter direct detection

Abstract

If dark matter couples predominantly to the axial-vector currents with heavy quarks, the leading contribution to dark-matter scattering on nuclei is either due to one-loop weak corrections or due to the heavy-quark axial charges of the nucleons. We calculate the effects of Higgs and weak gauge-boson exchanges for dark matter coupling to heavy-quark axial-vector currents in an effective theory below the weak scale. By explicit computation, we show that the leading-logarithmic QCD corrections are important, and thus resum them to all orders using the renormalization group.

29 pages, 6 figures

References in corpus (5)

• The Tevatron at the Frontier of Dark Matter Direct Detection
• From quarks to nucleons in dark matter direct detection
• Gamma Ray Line Constraints on Effective Theories of Dark Matter
• Connecting Dark Matter UV Complete Models to Direct Detection Rates via Effective Field Theory
• Electroweak effects in the extraction of the CKM angle $\gamma$ from $B\to D\pi$ decays

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