We present a search for dark matter particles with sub-GeV=c2 masses whose interactions have final state electrons using the DarkSide-50 experiment’s ð12 306 184Þ kg d low-radioactivity liquid argon exposure. By analyzing the ionization signals, we exclude new parameter space for the dark matter-electron cross section σ̄ e , the axioelectric coupling constant gAe , and the dark photon kinetic mixing parameter κ. We also set the first dark matter direct-detection constraints on the mixing angle jU e4 j2 for keV=c2 sterile neutrinos.
Agnes, P., Albuquerque, I. F. M., Alexander, T., Alton, A. K., Ave, M., Back, H. O., et al. (2023). Search for Dark Matter Particle Interactions with Electron Final States with DarkSide-50. PHYSICAL REVIEW LETTERS, 130(10), 101002 [10.1103/PhysRevLett.130.101002].
Search for Dark Matter Particle Interactions with Electron Final States with DarkSide-50
Bussino, S.Membro del Collaboration Group
;Mari, S. M.Membro del Collaboration Group
;Sanfilippo, S.Membro del Collaboration Group
;
2023-01-01
Abstract
We present a search for dark matter particles with sub-GeV=c2 masses whose interactions have final state electrons using the DarkSide-50 experiment’s ð12 306 184Þ kg d low-radioactivity liquid argon exposure. By analyzing the ionization signals, we exclude new parameter space for the dark matter-electron cross section σ̄ e , the axioelectric coupling constant gAe , and the dark photon kinetic mixing parameter κ. We also set the first dark matter direct-detection constraints on the mixing angle jU e4 j2 for keV=c2 sterile neutrinos.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
