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Velocity independent constraints on spin-dependent DM-nucleon interactions from IceCube and PICO

IceCube Collaboration; Aartsen, M. G.; Ackermann, M.; Adams, J.; Aguilar, J. A.; Ahlers, M.; Ahrens, M.; Alispach, C.; Andeen, K.; Anderson, T.; Ansseau, I.; Anton, G.; Argüelles, C.; Auffenberg, J.; Axani, S.; Backes, P.; Bagherpour, H.; Bai, X.; Balagopal V., A.; Barbano, A.; Barwick, S. W.; ... mehr

Adopting the Standard Halo Model (SHM) of an isotropic Maxwellian velocity distribution for dark matter (DM) particles in the Galaxy, the most stringent current constraints on their spin-dependent scattering cross-section with nucleons come from the IceCube neutrino observatory and the PICO-60 C$_{3}$F$_{8}$ superheated bubble chamber experiments. The former is sensitive to high energy neutrinos from the self-annihilation of DM particles captured in the Sun, while the latter looks for nuclear recoil events from DM scattering off nucleons. Although slower DM particles are more likely to be captured by the Sun, the faster ones are more likely to be detected by PICO. Recent N-body simulations suggest significant deviations from the SHM for the smooth halo component of the DM, while observations hint at a dominant fraction of the local DM being in substructures. We use the method of Ferrer et al. (JCAP 1509: 052, 2015) to exploit the complementarity between the two approaches and derive conservative constraints on DM-nucleon scattering. Our results constrain σSD≲3×10$^{-39}$cm$^{2}$ (6×10$^{-38}$cm$^{2}$) at ≳90% C.L. for a DM particle of mass 1 TeV annihilating into τ$^{+}$τ$^{-}$ (bb̅) with a local density of ρ$_{DM}$=0.3 GeV/cm$^{3}$. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000123471
Veröffentlicht am 10.09.2020
DOI: 10.1140/epjc/s10052-020-8069-5
Zitationen: 3
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Kernphysik (IKP)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 09.2020
Sprache Englisch
Identifikator ISSN: 1434-6044, 1434-6052
KITopen-ID: 1000123471
HGF-Programm 51.03.04 (POF III, LK 01) Kosmische Strahlung Technologien
Erschienen in The European physical journal / C
Verlag Springer Verlag
Band 80
Heft 9
Seiten Art. Nr.: 819
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Vorab online veröffentlicht am 04.09.2020
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