Probing light mediators at ultralow threshold energies with coherent elastic neutrino-nucleus scattering
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© 2017 American Physical Society. Light neutral mediators, with mass a21 GeV, are common features of extensions to the Standard Model. Current astrophysical and terrestrial experiments have constrained the model parameter space, and planned experiments around the world promise continued improvement in sensitivity. In this paper we study the prospects for probing light neutral mediators using terrestrial stopped pion and reactor sources in combination with ultralow threshold nuclear and electron recoil detectors. We show that the coherent neutrino-nucleus and neutrino-electron scattering channels provide complementary sensitivity to light mediators. With low-threshold detectors, we show that most stringent bounds on models arise from the nuclear scattering process, improving upon previous bounds from electron scattering of solar neutrinos by nearly an order of magnitude for mediator masses a30.1 GeV.
author list (cited authors)
Dent, J. B., Dutta, B., Liao, S., Newstead, J. L., Strigari, L. E., & Walker, J. W
complete list of authors
Dent, James B||Dutta, Bhaskar||Liao, Shu||Newstead, Jayden L||Strigari, Louis E||Walker, Joel W