Testing neutrino electromagnetic properties at current and future dark matter experiments

Light vector mediators at direct detection experiments

“…[40], though here the analysis is improved following the method of ref. [29], as explained previously. The thin magenta lines correspond to the analyses of PandaX-4T (dotted), LZ (solid) and XENONnT (dashed-dotted) data, while the thick magenta dashed line is the result from our combined analysis.…”

“…Strikingly, the increase in target size and sensitivity of current DD detectors has opened a whole new window for the observation of the scattering of solar neutrinos. While constituting an irreducible background for DM searches, through the so-called ν−floor [25] or fog [26], sizable fluxes of solar neutrinos also provide new opportunities for probing neutrino properties [27][28][29] and new physics connected to the neutrino sector [30][31][32][33][34][35][36][37].…”

“…Analyses along this line have been done previously to investigate neutrino properties and BSM interactions. These include, for instance, neutrino electromagnetic properties such as effective [27,29] and fundamental [40] neutrino magnetic moments. Future data from e.g.…”

“…Secondly, we carry out an improved statistical analysis by treating the background components of LZ, XENONnT and PandaX-4T separately, together with their own uncertainty, closely following ref. [29]. Finally, we perform a comprehensive exploration of various vector mediators that go beyond the simplest B − L model, as already introduced.…”