paper

Towards Probing the Diffuse Supernova Neutrino Background in All Flavors

arXiv:2112.09168 · doi:10.1103/PhysRevD.105.043008

Abstract

Fully understanding the average core-collapse supernova requires detecting the diffuse supernova neutrino background (DSNB) in all flavors. While the DSNB flux is near detection, and the DSNB flux has a good upper limit and prospects for improvement, the DSNB (each of ) flux has a poor limit and heretofore had no clear path for improved sensitivity. We show that a succession of xenon-based dark matter detectors -- XENON1T (completed), XENONnT/LUX-ZEPLIN (running), and DARWIN (proposed) -- can dramatically improve sensitivity to DSNB the neutrino-nucleus coherent scattering channel. XENON1T could match the present sensitivity of per flavor, XENONnT/LUX-ZEPLIN would have linear improvement of sensitivity with exposure, and a long run of DARWIN could reach a flux sensitivity of . Together, these would also contribute to greatly improve bounds on non-standard scenarios. Ultimately, to reach the standard flux range of , even larger exposures will be needed, which we show may be possible with the series of proposed lead-based RES-NOVA detectors.

13 pages, 11 figures, 3 appendices. Minor clarifications added, matches version accepted for publication in Phys. Rev. D

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