Detection of sub-MeV Dark Matter with Three-Dimensional Dirac Materials - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review D Année : 2018

Detection of sub-MeV Dark Matter with Three-Dimensional Dirac Materials

Yonit Hochberg
  • Fonction : Auteur
Yonatan Kahn
  • Fonction : Auteur
Mariangela Lisanti
  • Fonction : Auteur
Kathryn M. Zurek
  • Fonction : Auteur
Adolfo G. Grushin
  • Fonction : Auteur
Roni Ilan
  • Fonction : Auteur
Sinéad M. Griffin
  • Fonction : Auteur
Zhen-Fei Liu
  • Fonction : Auteur
Sophie F. Weber
  • Fonction : Auteur
Jeffrey B. Neaton
  • Fonction : Auteur

Résumé

We propose the use of three-dimensional Dirac materials as targets for direct detection of sub-MeV dark matter. Dirac materials are characterized by a linear dispersion for low-energy electronic excitations, with a small band gap of O(meV) if lattice symmetries are broken. Dark matter at the keV scale carrying kinetic energy as small as a few meV can scatter and excite an electron across the gap. Alternatively, bosonic dark matter as light as a few meV can be absorbed by the electrons in the target. We develop the formalism for dark matter scattering and absorption in Dirac materials and calculate the experimental reach of these target materials. We find that Dirac materials can play a crucial role in detecting dark matter in the keV to MeV mass range that scatters with electrons via a kinetically mixed dark photon, as the dark photon does not develop an in-medium effective mass. The same target materials provide excellent sensitivity to absorption of light bosonic dark matter in the meV to hundreds of meV mass range, superior to all other existing proposals when the dark matter is a kinetically mixed dark photon.

Dates et versions

hal-03276476 , version 1 (08-02-2018)
hal-03276476 , version 2 (02-07-2021)

Identifiants

Citer

Yonit Hochberg, Yonatan Kahn, Mariangela Lisanti, Kathryn M. Zurek, Adolfo G. Grushin, et al.. Detection of sub-MeV Dark Matter with Three-Dimensional Dirac Materials. Physical Review D, 2018, 97 (1), pp.015004. ⟨10.1103/PhysRevD.97.015004⟩. ⟨hal-03276476v1⟩
75 Consultations
32 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More