Constraining neutrino-DM interactions with Milky Way dwarf spheroidals and supernova neutrinos

Journal Article · 08 July 2024 · Physical Review. D.

DOI: https://doi.org/10.1103/PhysRevD.110.023004 · OSTI ID:2395996

Heston, Sean ; Horiuchi, Shunsaku; Shirai, Satoshi

We constrain the neutrino-dark matter cross section using properties of the dark matter density profiles of Milky Way dwarf spheroidal galaxies. The constraint arises from core-collapse supernova neutrinos scattering on dark matter as a form of energy injection, allowing the transformation of the dark matter density profile from a cusped profile to a flatter profile. We assume a standard cosmology of dark energy and cold, collisionless, and non-self-interacting dark matter. By requiring that the dark matter cores do not lose too much mass or overshoot constraints from stellar kinematics, we place an upper limit on the cross section of ${\sigma }_{\nu -\mathrm{DM}}(E_{\nu }=15\mathrm{MeV},m_{\chi }\lesssim 130\mathrm{GeV})\approx 3.4\times {10}^{-23}{\mathrm{cm}}^2$ and ${\sigma }_{\nu -\mathrm{DM}}(E_{\nu }=15\mathrm{MeV},m_{\chi }\gtrsim 130\mathrm{GeV})\approx 3.2\times {10}^{-27}{\left(\frac{m_{\chi }}{1\mathrm{GeV}}\right)}^2{\mathrm{cm}}^2$ , which is stronger than previous bounds for these energies. Consideration of baryonic feedback or host galaxy effects on the dark matter profile can strengthen this constraint. Published by the American Physical Society 2024

• Sponsoring Organization: USDOE
• Grant/Contract Number: SC0020262
• OSTI ID: 2395996
• Journal Information: Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 2 Vol. 110; ISSN PRVDAQ; ISSN 2470-0010
• Publisher: American Physical SocietyCopyright Statement
• Country of Publication: United States
• Language: English