Theory Seminars

Sub-MeV dark matter detection with superfluid He-4: an effective theory approach

by Angelo Esposito (EPFL)

Europe/Madrid
IFAE seminar room (IFAE)

IFAE seminar room

IFAE

Description

I will discuss the possibility of looking for sub-MeV dark matter using superfluid helium-4, which is currently the most promising proposal for such a mass range. In particular, I will employ the recently developed relativistic effective theory for the superfluid phonon to describe the response of the detector to the passing dark matter. Being formulated in a quantum field theory language, this approach is particularly suitable for a particle physics problem like the one at hand, and presents several advantages with respect to the standard techniques. I will apply the formalism to a model of dark matter with both a scalar and vector mediator, and discuss what kind of constraints such an experiment can put on these model.

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