Directional detection of light dark matter from three-phonon events in superfluid He 4

Andrea Caputo, Angelo Esposito, Fulvio Piccinini, Antonio D. Polosa, Giuseppe Rossi

Research output: Contribution to journalArticlepeer-review

Abstract

We present the analysis of a new signature for light dark matter detection with superfluid He4: the emission of three phonons. We show that, in a region of mass below the MeV, the kinematics of this process can offer a way to reconstruct the dark matter interaction vertex while providing background rejection via coincidence requirements and directionality. We develop all the theoretical tools to deal with such an observable, and compute the associated differential distributions.

Original languageEnglish
Article number055017
JournalPhysical Review D
Volume103
Issue number5
DOIs
StatePublished - 23 Mar 2021
Externally publishedYes

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