Physics - High Energy Physics - Experiment Physics - High Energy Physics - Phenomenology High Energy Physics
Fermionic dark matter absorption on nuclear targets via neutral current interactions is explored using a non-relativistic effective field theory framework. An analysis of data from the PICO-60 C F bubble chamber sets leading constraints on spin-independent absorption for dark matter masses below 23 MeV/ and establishes the first limits on spin-dependent absorptive interactions. These results demonstrate the sensitivity of bubble chambers to low-mass dark matter and underscore the importance of absorption searches in expanding the parameter space of direct detection experiments.
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Absorption of Fermionic Dark Matter in the PICO-60 C$_{3}$F$_{8}$ Bubble Chamber