%0 Journal Article
%T Dark matter, dark photon and superfluid He-4 from effective field theory
%A Caputo, A.
%A Esposito, A.
%A Geoffray, E.
%A Polosa, A. D.
%A Sun, S. C.
%J Physics Letters B
%D 2020
%V 802
%I Elsevier
%@ 0370-2693
%G English
%F Caputo_etal2020
%O WOS:000515091400017
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4349), last updated on Thu, 18 Jun 2020 11:09:38 +0000
%X 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.
%K Light dark matter
%K Effective theory
%K Helium
%K Phonon
%K Dark photon
%R 10.1016/j.phystab.2020.135258
%U https://arxiv.org/abs/1911.04511
%U https://doi.org/10.1016/j.phystab.2020.135258
%P 135258-6pp