Measuring the Solar pp Neutrino Flux using Electron Recoil Data from XENONnT
ORAL
Abstract
The XENONnT experiment, designed for dark matter detection, has exhibited exceptional sensitivity to low-energy ER (electron recoil) signals. In addition to the search for new signals, the low ER background down to O(10) events/(t·y·keV) and the multi-ton target mass also introduces a potential to improve Borexino's precision in measuring the pp neutrino flux with LXe detectors, especially XENONnT.
A key aspect of the solar pp neutrino measurement in XENONnT is constraining the Pb214 background, which is the dominant low-energy ER background. During the XENONnT SR1 (Science Run 1), we performed dedicated Rn222 calibrations to better understand and model this background, enhancing our sensitivity. We also applied novel data selection, spatially optimized for this signal, to improve the precision of efficiency modeling and background constraints. This talk will present our current progress, including our background model, radon calibration strategies and analyses, and preliminary sensitivity estimates.
A key aspect of the solar pp neutrino measurement in XENONnT is constraining the Pb214 background, which is the dominant low-energy ER background. During the XENONnT SR1 (Science Run 1), we performed dedicated Rn222 calibrations to better understand and model this background, enhancing our sensitivity. We also applied novel data selection, spatially optimized for this signal, to improve the precision of efficiency modeling and background constraints. This talk will present our current progress, including our background model, radon calibration strategies and analyses, and preliminary sensitivity estimates.
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Presenters
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Yue Ma
UCSD
Authors
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Yue Ma
UCSD