科研之友
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摘要
We report a search for new physics signals using the low energy electron recoil events in the complete data set from PandaX-Ⅱ,in light of the recent event excess reported by XENON1 T.The data correspond to a total exposure of 100.7 ton·day with liquid xenon.With robust estimates of the dominant background spectra,we perform sensitive searches on solar axions and neutrinos with enhanced magnetic moment.It is found that the axionelectron coupling gAe <4.6 × 10-12 for an axion mass less than 0.1 keV/c2 and the neutrino magnetic momentμv <4.9 × 10-11μB at 90% confidence level.The observed excess from XENON1 T is within our experimental constraints.
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