Weak mixing below the weak scale in dark-matter direct detection
High Energy Physics - Phenomenology
2018-04-04 v1
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.
Cite
@article{arxiv.1801.04240,
title = {Weak mixing below the weak scale in dark-matter direct detection},
author = {Joachim Brod and Benjamin Grinstein and Emmanuel Stamou and Jure Zupan},
journal= {arXiv preprint arXiv:1801.04240},
year = {2018}
}
Comments
29 pages, 6 figures