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dc.contributor.authorTrzaska, Wladyslaw H.
dc.contributor.authorBarzilov, A.
dc.contributor.authorEnqvist, T.
dc.contributor.authorJedrzejczak, K.
dc.contributor.authorJoutsenvaara, J.
dc.contributor.authorKasztelan, M.
dc.contributor.authorKotavaara, O.
dc.contributor.authorKuusiniemi, P.
dc.contributor.authorLoo, K.K.
dc.contributor.authorOrzechowski, J.
dc.contributor.authorPuputti, J.
dc.contributor.authorSlupecki, M.
dc.contributor.authorSzabelski, J.
dc.contributor.authorUsoskin, I.
dc.contributor.authorWard, E.
dc.date.accessioned2022-08-16T06:57:26Z
dc.date.available2022-08-16T06:57:26Z
dc.date.issued2022
dc.identifier.citationTrzaska, W. H., Barzilov, A., Enqvist, T., Jedrzejczak, K., Joutsenvaara, J., Kasztelan, M., Kotavaara, O., Kuusiniemi, P., Loo, K.K., Orzechowski, J., Puputti, J., Slupecki, M., Szabelski, J., Usoskin, I., & Ward, E. (2022). NEMESIS Setup for Indirect Detection of WIMPs. <i>Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment</i>, <i>1040</i>, Article 167223. <a href="https://doi.org/10.1016/j.nima.2022.167223" target="_blank">https://doi.org/10.1016/j.nima.2022.167223</a>
dc.identifier.otherCONVID_150950488
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/82567
dc.description.abstractWe summarize the evidence for DM-like anomalies in neutron multiplicity spectra collected underground with Pb targets by three independent experiments: NEMESIS (at 210 m.w.e.) NMDS (at 583 m.w.e.), and ZEPLIN-II (at 2850 m.w.e.). A new analysis shows small but persistent anomalies at high neutron multiplicities. Adjusted for differences in detection efficiencies, the positions of the anomalies are consistent between the three systems. Also, the intensities match when corrected for the acquisition time and estimated detection efficiency. While the three measurements are inconclusive when analyzed separately, together, they exclude a statistical fluke to better than one in a million. To prove the existence of the anomalies above the 5-sigma discovery threshold, we propose to upgrade the current NEMESIS setup. The upgrade concept and the critical components of the new experiment are described. The upgraded setup would already acquire the needed data sample during the first year of operation. Additional information, vital for the physics interpretation of the analysis, will be obtained with a Cu target.en
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherElsevier BV
dc.relation.ispartofseriesNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
dc.rightsCC BY 4.0
dc.subject.otherdark matter
dc.subject.otherWIMP
dc.subject.otherindirect detection
dc.subject.otherneutron detectors
dc.titleNEMESIS Setup for Indirect Detection of WIMPs
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202208164111
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.relation.issn0168-9002
dc.relation.volume1040
dc.type.versionpublishedVersion
dc.rights.copyright© 2022 The Author(s). Published by Elsevier B.V.
dc.rights.accesslevelopenAccessfi
dc.subject.ysopimeä aine
dc.subject.ysoneutronit
dc.subject.ysohiukkasfysiikka
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p14101
jyx.subject.urihttp://www.yso.fi/onto/yso/p15394
jyx.subject.urihttp://www.yso.fi/onto/yso/p15576
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1016/j.nima.2022.167223
jyx.fundinginformationThis work has been supported in part by the EU INTERREG for the Baltic Sea programme within the BSUIN project and by the Polish Ministry of Science and Higher Education (Grant no. 3988/INTERREG BSR/2018/2). Assistance from A. Sobkow from the Lodz University of Technology is gratefully acknowledged.
dc.type.okmA1


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