Exothermic isospin-violating dark matter after SuperCDMS and CDEX
High Energy Physics - Phenomenology
2015-03-03 v4
Abstract
We show that exothermic isospin-violating dark matter (IVDM) can make the results of the latest CDMS-Si experiment consistent with recent null experiments, such as XENON10, XENON100, LUX, CDEX, and SuperCDMS, whereas for the CoGeNT experiment, a strong tension still persists. For CDMS-Si, separate exothermic dark matter or isospin-violating dark matter cannot fully ameliorate the tensions among these experiments; the tension disappears only if exothermic scattering is combined with an isospin-violating effect of f_n/f_p=-0.7. For such exothermic IVDM to exist, at least a new vector gauge boson (dark photon or dark Z') that connects SM quarks to Majorana-type DM particles is required.
Keywords
Cite
@article{arxiv.1404.6043,
title = {Exothermic isospin-violating dark matter after SuperCDMS and CDEX},
author = {Nan Chen and Qing Wang and Wei Zhao and Shin-Ted Lin and Qian Yue and Jin Li},
journal= {arXiv preprint arXiv:1404.6043},
year = {2015}
}
Comments
12 pages, 6 figures