First search for the absorption of fermionic dark matter with the PandaX-4T experiment

L Gu, A Abdukerim, Z Bo, W Chen, X Chen, Y Chen… - Physical Review Letters, 2022 - APS
L Gu, A Abdukerim, Z Bo, W Chen, X Chen, Y Chen, C Cheng, Y Cheng, Z Cheng, X Cui…
Physical Review Letters, 2022APS
Compared with the signature of dark matter elastic scattering off nuclei, the absorption of
fermionic dark matter by nuclei opens up a new searching channel for light dark matter with
a characteristic monoenergetic signal. In this Letter, we explore the 95.0-day data from the
PandaX-4T commissioning run and report the first dedicated searching results of the
fermionic dark matter absorption signal through a neutral current process. No significant
signal was found, and the lowest limit on the dark matter-nucleon interaction cross section is …
Compared with the signature of dark matter elastic scattering off nuclei, the absorption of fermionic dark matter by nuclei opens up a new searching channel for light dark matter with a characteristic monoenergetic signal. In this Letter, we explore the 95.0-day data from the PandaX-4T commissioning run and report the first dedicated searching results of the fermionic dark matter absorption signal through a neutral current process. No significant signal was found, and the lowest limit on the dark matter-nucleon interaction cross section is set to be for a fermionic dark matter mass of with 90% confidence level.
American Physical Society