Diurnal Effect of Sub-GeV Dark Matter Boosted by Cosmic Rays
Open Access
- 5 March 2021
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 126 (9), 091804
- https://doi.org/10.1103/physrevlett.126.091804
Abstract
We point out a new type of diurnal effect for the cosmic ray boosted dark matter (DM). The DM-nucleon interactions not only allow the direct detection of DM with nuclear recoils but also allow cosmic rays to scatter with and boost the nonrelativistic DM to higher energies. If the DM-nuclei scattering cross sections are sufficiently large, the DM flux is attenuated as it propagates through the Earth, leading to a strong diurnal modulation. This diurnal modulation provides another prominent signature for the direct detection of boosted sub-GeV DM, in addition to signals with higher recoil energy.Funding Information
- Shanghai Jiao Tong University (WF220442604, 20PJ1407800)
- National Natural Science Foundation of China (12090064, 11722328, 1185130522, 11775141, 12090061)
- Chinese Academy of Sciences
- Ministry of Science and Technology of the People’s Republic of China (2016YFA0400301)
- Science and Technology Commission of Shanghai Municipality (18JC1410200)
- Hongwen Foundation
- Tencent Foundation
This publication has 92 references indexed in Scilit:
- Diurnal modulation due to self-interacting mirror & hidden sector dark matterJournal of Cosmology and Astroparticle Physics, 2012
- Direction dependence and diurnal modulation in dark matter detectorsAstroparticle Physics, 2011
- WIMP event rates in directional experiments: The diurnal variation signatureOpen Physics, 2011
- Uncertainties in the composition of Earth, its core and silicate sphereJournal of Physics: Conference Series, 2008
- Diurnal and annual modulation of cold dark matter signalsPhysical Review D, 2004
- A consistent set of nuclear rms charge radii: properties of the radius surface R(N,Z)Atomic Data and Nuclear Data Tables, 2004
- Cold dark matter identification: Diurnal modulation reexaminedPhysical Review D, 1997
- Surface sputtering from cold dark matter interactions: proposed search for its diurnal modulationAstroparticle Physics, 1995
- Detectability of certain dark-matter candidatesPhysical Review D, 1985
- Solar Modulation of Galactic Cosmic RaysThe Astrophysical Journal, 1968