2020/06/30 by Haider Alhazmi, Doojin Kim, Kyoungchul Kong +3
Mathematics · Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Electron #Geometry #Interpretation (philosophy) #Mathematics #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Philosophy #Physics #Scalar (mathematics) #hep-ex #hep-ph
paper · pdf · doi:10.1007/jhep05(2021)055
17 pages, 5 figures, 2 tables. Comments are welcome
arxiv created 2020/12/11 · openalex publication_date 2021/05/01 · arxiv updated 2021/05/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
A bstract The dark matter interpretation for a recent observation of excessive electron recoil events at the XENON1T detector seems challenging because its velocity is not large enough to give rise to recoiling electrons of O(keV) <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>O</mml:mi> <mml:mfenced> <mml:mi>keV</mml:mi> </mml:mfenced> </mml:math> . Fast-moving or boosted dark matter scenarios are receiving attention as a remedy for this issue, rendering the dark matter interpretation a possibility to explain the anomaly. We investigate various scenarios where such dark matter of spin 0 and 1/2 interacts with electrons via an exchange of vector, axial-vector, pseudo-scalar, or scalar mediators. We find parameter values not only to reproduce the excess but to be consistent with existing bounds. Our study suggests that the scales of mass and coupling parameters preferred by the excess can be mostly affected by the type of mediator, and that significantly boosted dark matter can explain the excess depending on the mediator type and its mass choice. The method proposed in this work is general, and hence readily applicable to the interpretation of observed data in the dark matter direct detection experiment.