Light(ly)-coupled Dark Matter in the keV Range: Freeze-In and Constraints

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  • معلومة اضافية
    • Publication Date:
      2019
    • Collection:
      Astrophysics
      High Energy Physics - Phenomenology
    • Abstract:
      Dark matter produced from thermal freeze-out is typically restricted to have masses above roughly 1 MeV. However, if the couplings are small, the freeze-in mechanism allows for production of dark matter down to keV masses. We consider dark matter coupled to a dark photon that mixes with the photon and dark matter coupled to photons through an electric or magnetic dipole moment. We discuss contributions to the freeze-in production of such dark matter particles from standard model fermion-antifermion annihilation and plasmon decay. We also derive constraints on such dark matter from the cooling of red giant stars, horizontal branch stars, and the Sun, carefully evaluating the thermal processes as well as the Compton scattering that dominates for masses above the plasma frequency. For the dark photon portal dark matter, the parameters to obtain the observed relic abundance from freeze-in are excluded below a few tens of keV, depending on the value of the dark gauge coupling constant. For dark matter with an electric or magnetic dipole moment, the freeze-in production parameters are barely constrained through stellar cooling arguments. While laboratory probes are unlikely to probe these freeze-in scenarios in general, we show that for dark matter with an electric or magnetic dipole moment and for dark matter masses above the reheating temperature, the couplings needed for freeze-in to produce the observed relic abundance can be probed partially by upcoming direct-detection experiments.
      Comment: 27 pages + appendices and references, 8 figures
    • Accession Number:
      edsarx.1911.03389
  • Citations
    • ABNT:
      CHANG, J. H.; ESSIG, R.; REINERT, A. Light(ly)-coupled Dark Matter in the keV Range: Freeze-In and Constraints. [s. l.], 2019. Disponível em: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsarx&AN=edsarx.1911.03389&custid=s8280428. Acesso em: 13 dez. 2019.
    • AMA:
      Chang JH, Essig R, Reinert A. Light(ly)-coupled Dark Matter in the keV Range: Freeze-In and Constraints. 2019. http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsarx&AN=edsarx.1911.03389&custid=s8280428. Accessed December 13, 2019.
    • APA:
      Chang, J. H., Essig, R., & Reinert, A. (2019). Light(ly)-coupled Dark Matter in the keV Range: Freeze-In and Constraints. Retrieved from http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsarx&AN=edsarx.1911.03389&custid=s8280428
    • Chicago/Turabian: Author-Date:
      Chang, Jae Hyeok, Rouven Essig, and Annika Reinert. 2019. “Light(Ly)-Coupled Dark Matter in the KeV Range: Freeze-In and Constraints.” http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsarx&AN=edsarx.1911.03389&custid=s8280428.
    • Harvard:
      Chang, J. H., Essig, R. and Reinert, A. (2019) ‘Light(ly)-coupled Dark Matter in the keV Range: Freeze-In and Constraints’. Available at: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsarx&AN=edsarx.1911.03389&custid=s8280428 (Accessed: 13 December 2019).
    • Harvard: Australian:
      Chang, JH, Essig, R & Reinert, A 2019, ‘Light(ly)-coupled Dark Matter in the keV Range: Freeze-In and Constraints’, viewed 13 December 2019, .
    • MLA:
      Chang, Jae Hyeok, et al. Light(Ly)-Coupled Dark Matter in the KeV Range: Freeze-In and Constraints. 2019. EBSCOhost, search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsarx&AN=edsarx.1911.03389&custid=s8280428.
    • Chicago/Turabian: Humanities:
      Chang, Jae Hyeok, Rouven Essig, and Annika Reinert. “Light(Ly)-Coupled Dark Matter in the KeV Range: Freeze-In and Constraints,” 2019. http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsarx&AN=edsarx.1911.03389&custid=s8280428.
    • Vancouver/ICMJE:
      Chang JH, Essig R, Reinert A. Light(ly)-coupled Dark Matter in the keV Range: Freeze-In and Constraints. 2019 [cited 2019 Dec 13]; Available from: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsarx&AN=edsarx.1911.03389&custid=s8280428