Boosted Dark Matter Interpretation of the XENON1T Excess
[1];
[1];
[2];
- Univ. of Utah, Salt Lake City, UT (United States)
- Chinese Academy of Sciences (CAS), Beijing/Hangzhou (China); University of Chinese Academy of Sciences, Beijing (China); Peking Univ., Beijing (China); International Centre for Theoretical Physics Asia-Pacific, Beijing/Hangzhou (China)
- Univ. of Hong Kong (Hong Kong)
We propose boosted dark matter (BDM) as a possible explanation for the excess of keV electron recoil events observed by XENON1T. BDM particles have velocities much larger than those typical of virialized dark matter, and, as such, BDM-electron scattering can naturally produce keV electron recoils. We show that the required BDM-electron scattering cross sections can be easily realized in a simple model with a heavy vector mediator. Though these cross sections are too large for BDM to escape from the Sun, the BDM flux can originate from the Galactic Center or from halo dark matter annihilations. Furthermore, a daily modulation of the BDM signal will be present, which could not only be used to differentiate it from various backgrounds but would also provide important directional information for the BDM flux.
- Research Organization:
- Univ. of Utah, Salt Lake City, UT (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Science Foundation (NSF); National Natural Science Foundation of China (NSFC); Chinese Academy of Sciences; Research Grants Council of Hong Kong; USDOE
- Grant/Contract Number:
- SC0009959; PHY-1720282; 11947302; 11690022; 11851302; 11675243; 11761141011; XDB21010200; XDB23000000; 17305517
- OSTI ID:
- 1671859
- Alternate ID(s):
- OSTI ID: 1851236
- Journal Information:
- Physical Review Letters, Vol. 125, Issue 16; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Freeze-in dark matter from secret neutrino interactions
Pseudoscalar pair production via off-shell Higgs in composite Higgs models