Solar neutrino detection in liquid xenon detectors via charged-current scattering to excited states
Haselschwardt, S., Lenardo, B., Pirinen, P., & Suhonen, J. (2020). Solar neutrino detection in liquid xenon detectors via charged-current scattering to excited states. Physical Review D, 102(7), Article 072009. https://doi.org/10.1103/physrevd.102.072009
Julkaistu sarjassa
Physical Review DPäivämäärä
2020Tekijänoikeudet
© Authors,, 2020
We investigate the prospects for real-time detection of solar neutrinos via the charged-current neutrino-nucleus scattering process in liquid xenon time projection chambers. We use a nuclear shell model, benchmarked with experimental data, to calculate the cross sections for populating specific excited states of the cesium nuclei produced by neutrino capture on 131Xe and 136Xe. The shell model is further used to compute the decay schemes of the low-lying 1+ excited states of 136Cs, for which there is sparse experimental data. We explore the possibility of tagging the characteristic deexcitation γ rays/conversion electrons using two techniques: spatial separation of their energy deposits using event topology and their time separation using delayed coincidence. The efficiencies in each case are evaluated within a range of realistic detector parameters. We find that the topological signatures are likely to be dominated by radon backgrounds, but that a delayed-coincidence signature from long-lived states predicted in 136Cs may enable background-free detection of CNO neutrino interactions in next-generation experiments with smaller uncertainty than current measurements. We also estimate the sensitivity as a function of exposure for detecting the solar-temperature-induced line shift in 7Be neutrino emission, which may provide a new test of solar models.
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American Physical Society (APS)ISSN Hae Julkaisufoorumista
2470-0010Asiasanat
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https://converis.jyu.fi/converis/portal/detail/Publication/43480791
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This work was supported by the U.S. Department of Energy Office of Science under Contract No. DE-AC02-05CH11231 and by DOE-NP Grant No. DE-SC0017970. B. L. acknowledges the support of a Karl Van Bibber fellowship from Stanford University. This work has been partially supported by the Academy of Finland under Project No. 318043.Lisenssi
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