Light vector mediators facing XENON1T data

Abstract

Recently the XENON1T collaboration has released new results on searches for new physics in low-energy electronic recoils. The data shows an excess over background in the low-energy tail, particularly pronounced at about $2-3$ keV. With an exposure of $0.65$ tonne-year, large detection efficiency and energy resolution, the detector is sensitive as well to solar neutrino backgrounds, with the most prominent contribution given by $pp$ neutrinos. We investigate whether such signal can be explained in terms of new neutrino interactions with leptons mediated by a light vector particle. We find that the excess is consistent with this interpretation for vector masses below $\lesssim 0.1$ MeV. The region of parameter space probed by the XENON1T data is competitive with constraints from laboratory experiments, in particular GEMMA, Borexino and TEXONO. However we point out a severe tension with astrophysical bounds and cosmological observations.

6 pages, 4 figures. V3: Few typos corrected and one reference added. Matches version published in PLB

References in corpus (20)

• New solar opacities, abundances, helioseismology, and neutrino fluxes
• Status of neutrino oscillations 2018: first hint for normal mass ordering and improved CP sensitivity
• DarkSide-20k: A 20 Tonne Two-Phase LAr TPC for Direct Dark Matter Detection at LNGS
• Precision measurement of the 7Be solar neutrino interaction rate in Borexino
• Measurement of Neutrino-Electron Scattering Cross-Section with a CsI(Tl) Scintillating Crystal Array at the Kuo-Sheng Nuclear Power Reactor
• Neutrino Coherent Scattering Rates at Direct Dark Matter Detectors
• How Magnetic is the Dirac Neutrino?
• COHERENT analysis of neutrino generalized interactions
• Constraints on Dark Photon from Neutrino-Electron Scattering Experiments
• First observation of two-neutrino double electron capture in ${}^{124}$Xe with XENON1T
• Model Independent Bounds on Magnetic Moments of Majorana Neutrinos
• Probing non-standard neutrino-electron interactions with solar and reactor neutrinos
• Co-SIMP Miracle
• Comment on "Is Dark Matter with Long-Range Interactions a Solution to All Small-Scale Problems of ΛCDM Cosmology?"
• GEMMA experiment: three years of the search for the neutrino magnetic moment
• $Z^{\prime }$s in neutrino scattering at DUNE
• Non-standard interactions of solar neutrinos in dark matter experiments
• Probing light mediators at ultra-low threshold energies with coherent elastic neutrino-nucleus scattering
• Chameleon Vector Bosons
• Constraints on Neutrino-Neutrino Interactions from Primordial Nucleosynthesis

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