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Article: Boosted Dark Matter Interpretation of the XENON1T Excess

TitleBoosted Dark Matter Interpretation of the XENON1T Excess
Authors
KeywordsDirectional information
Galactic Center
Scattering cross section
Simple modeling
Issue Date2020
PublisherAmerican Physical Society. The Journal's web site is located at https://journals.aps.org/prl/
Citation
Physical Review Letters, 2020, v. 125 n. 16, p. article no. 161804 How to Cite?
AbstractWe 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.
Persistent Identifierhttp://hdl.handle.net/10722/290969
ISSN
2023 Impact Factor: 8.1
2023 SCImago Journal Rankings: 3.040
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorFornal, B-
dc.contributor.authorSandick, P-
dc.contributor.authorShu, J-
dc.contributor.authorSu, M-
dc.contributor.authorZhao, Y-
dc.date.accessioned2020-11-02T05:49:41Z-
dc.date.available2020-11-02T05:49:41Z-
dc.date.issued2020-
dc.identifier.citationPhysical Review Letters, 2020, v. 125 n. 16, p. article no. 161804-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10722/290969-
dc.description.abstractWe 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.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at https://journals.aps.org/prl/-
dc.relation.ispartofPhysical Review Letters-
dc.rightsCopyright [2020] by The American Physical Society. This article is available online at [http://dx.doi.org/10.1103/PhysRevLett.125.161804].-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectDirectional information-
dc.subjectGalactic Center-
dc.subjectScattering cross section-
dc.subjectSimple modeling-
dc.titleBoosted Dark Matter Interpretation of the XENON1T Excess-
dc.typeArticle-
dc.identifier.emailSu, M: mengsu84@hku.hk-
dc.identifier.authoritySu, M=rp02150-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevLett.125.161804-
dc.identifier.pmid33124870-
dc.identifier.scopuseid_2-s2.0-85094935791-
dc.identifier.hkuros318563-
dc.identifier.volume125-
dc.identifier.issue16-
dc.identifier.spagearticle no. 161804-
dc.identifier.epagearticle no. 161804-
dc.identifier.isiWOS:000576896200005-
dc.publisher.placeUnited States-
dc.identifier.issnl0031-9007-

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