6533b7d7fe1ef96bd1268eec

RESEARCH PRODUCT

Dark matter, dark photon and superfluid He-4 from effective field theory

Emma GeoffrayAngelo EspositoAntonio D. PolosaSichun SunAndrea Caputo

subject

High Energy Physics - Theorylight dark matterNuclear and High Energy PhysicsPhotonDark matterFOS: Physical scienceshelium01 natural sciencesDark photonVector bosonStandard ModelSuperfluidityeffective theoryHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesEffective field theory010306 general physicsphononLight dark matterPhysics010308 nuclear & particles physicslcsh:QC1-999High Energy Physics - PhenomenologyHigh Energy Physics - Theory (hep-th)Quantum electrodynamicsdark photondark photon; effective theory; helium; light dark matter; phononlcsh:Physics

description

We consider a model of sub-GeV dark matter whose interaction with the Standard Model is mediated by a new vector boson (the dark photon) which couples kinetically to the photon. We describe the possibility of constraining such a model using a superfluid He-4 detector, by means of an effective theory for the description of the superfluid phonon. We find that such a detector could provide bounds that are competitive with other direct detection experiments only for ultralight vector mediator, in agreement with previous studies. As a byproduct we also present, for the first time, the low-energy effective field theory for the interaction between photons and phonons.

10.1016/j.physletb.2020.135258http://hdl.handle.net/10261/216255