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Light vector mediators facing XENON1T data

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arxiv 2006.12457 v3 pith:5CPIOY2Q submitted 2020-06-22 hep-ph

D. Aristizabal Sierra , V. De Romeri , L. J. Flores , D. K. Papoulias This is my paper · ORCID
classification hep-ph
keywords datavectorxenon1texcesslightlow-energyneutrinoastrophysical
verification ladder T0 review T1 audit T2 compute T3 formal
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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.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Neutrino electromagnetic properties and sterile dipole portal in light of the first solar CE$\nu$NS data

    hep-ph 2024-12 conditional novelty 6.0 of 10

    The paper derives the first 90% CL limits on neutrino magnetic moments, millicharges, and the sterile dipole portal from solar 8B CEνNS data in XENONnT and PandaX-4T.

  2. Bounds on new neutrino interactions from the first CE$\nu$NS data at direct detection experiments

    hep-ph 2024-11 conditional novelty 6.0 of 10

    Using the first solar 8B CEνNS hints from XENONnT and PandaX-4T, the authors derive a combined low-energy weak mixing angle and place 90% limits on scalar, vector, axial-vector, and tensor neutrino mediator couplings.

  3. Testing light and heavy vector mediators with solar CE$\nu$NS measurements

    hep-ph 2026-02 conditional novelty 5.0 of 10

    Combined solar CEνNS data from XENONnT, PandaX-4T, and LZ yield competitive constraints on vector NSI and light mediators and a weak mixing angle measurement at low momentum transfer.

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