Spin-Dependent Weakly-Interacting-Massive-Particle--Nucleon Cross Section Limits from First Data of PandaX-II Experiment
New constraints are presented on the spin-dependent WIMP-nucleon interaction from the PandaX-II experiment, using a data set corresponding to a total exposure of 3.3\(\times10^4\) kg-days. Assuming a standard axial-vector spin-dependent WIMP interaction with \(^{129}\)Xe and \(^{131}\)Xe nuclei, the...
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Published in | arXiv.org |
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Main Authors | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format | Paper Journal Article |
Language | English |
Published |
Ithaca
Cornell University Library, arXiv.org
15.02.2017
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Subjects | |
Online Access | Get full text |
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Summary: | New constraints are presented on the spin-dependent WIMP-nucleon interaction from the PandaX-II experiment, using a data set corresponding to a total exposure of 3.3\(\times10^4\) kg-days. Assuming a standard axial-vector spin-dependent WIMP interaction with \(^{129}\)Xe and \(^{131}\)Xe nuclei, the most stringent upper limits on WIMP-neutron cross sections for WIMPs with masses above 10 GeV/c\(^{2}\) are set in all dark matter direct detection experiments. The minimum upper limit of \(4.1\times 10^{-41}\) cm\(^2\) at 90\% confidence level is obtained for a WIMP mass of 40 GeV/c\(^{2}\). This represents more than a factor of two improvement on the best available limits at this and higher masses. These improved cross-section limits provide more stringent constraints on the effective WIMP-proton and WIMP-neutron couplings. |
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ISSN: | 2331-8422 |
DOI: | 10.48550/arxiv.1611.06553 |