Earth Shielding and Daily Modulation from Electrophilic Boosted Dark Particles
Abstract
Boosted dark particles of astrophysical origin can lead to nonstandard nuclear or electron recoil signals in direct detection experiments. %It has been shown that this interpretation successfully explains the excess of keV electron recoil events recently observed by the XENON1T experiment, and that a daily modulation of the signal in the detector is expected. We conduct an investigation of the daily modulation feature of a potential future signal of this type. In particular, we perform simulations of the dark particle interactions with electrons in atoms building up the Earth on its path to the detector, and provide in-depth predictions for the expected daily changes in the signal for various direct detection experiments, including XENONnT, PandaX, and LUX-ZEPLIN.
Keywords
Cite
@article{arxiv.2110.09685,
title = {Earth Shielding and Daily Modulation from Electrophilic Boosted Dark Particles},
author = {Yifan Chen and Bartosz Fornal and Pearl Sandick and Jing Shu and Xiao Xue and Yue Zhao and Junchao Zong},
journal= {arXiv preprint arXiv:2110.09685},
year = {2023}
}
Comments
15 pages, 12 figures. published version in PRD. For the code to calculate the atomic ionization form factor, see https://github.com/XueXiao-Physics/AtomIonCalc (AtomIonCalc) . For the Monte Carlo simulation of the electrophilic dark particles traveling inside the earth, see https://github.com/XueXiao-Physics/realEarthScatterDM (realEarthScatterDM). v4: location of detectors corrected