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Title

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

AuthorsCaputo, Andrea; Esposito, A.; Geoffray, E.; Polosa, A.D.; Sun, S.
Issue DateMar-2020
PublisherElsevier BV
CitationPHYSICS LETTERS B 802: 135258 (2020)
AbstractWe 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.
Publisher version (URL)http://dx.doi.org/10.1016/j.physletb.2020.135258
URIhttp://hdl.handle.net/10261/216255
DOIhttp://dx.doi.org/10.1016/j.physletb.2020.135258
Identifiersdoi: 10.1016/j.physletb.2020.135258
issn: 0370-2693
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