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dc.contributor.authorTrzaska, Wladyslaw Henryk
dc.contributor.authorBarzilov, Alex
dc.contributor.authorEnqvist, Timo
dc.contributor.authorJędrzejczak, Karol
dc.contributor.authorKasztelan, Marcin
dc.contributor.authorKuusiniemi, Pasi
dc.contributor.authorLoo, Kai
dc.contributor.authorOrzechowski, Jerzy
dc.contributor.authorSłupecki, Maciej
dc.contributor.authorSzabelski, Jacek
dc.contributor.authorWard, Tom
dc.contributor.editorMokina, Valentyna
dc.date.accessioned2024-05-03T11:35:18Z
dc.date.available2024-05-03T11:35:18Z
dc.date.issued2024
dc.identifier.citationTrzaska, W. H., Barzilov, A., Enqvist, T., Jędrzejczak, K., Kasztelan, M., Kuusiniemi, P., Loo, K., Orzechowski, J., Słupecki, M., Szabelski, J., & Ward, T. (2024). New Evidence for DM-like Anomalies in neutron multiplicity spectra. In V. Mokina (Ed.), <i>TAUP2023 : XVIII International Conference on Topics in Astroparticle and Underground Physics</i> (Article 083). Sissa. POS Proceedings of Science, 441. <a href="https://doi.org/10.22323/1.441.0083" target="_blank">https://doi.org/10.22323/1.441.0083</a>
dc.identifier.otherCONVID_213485734
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/94696
dc.description.abstractSubterrestrial neutron spectra show weak but consistent anomalies at multiplicities ~100 and above. The origin of the excess events remains ambiguous, but, in principle, it could be a signature of Dark Matter WIMP annihilation-like interaction with a massive Pb target. However, since the results of the available measurements are below the 5-sigma discovery level, and the observed anomalous structures are on a significant muon-induced background, an independent verification at even greater depth is needed. For that purpose, we have launched NEMESIS 1.4 – a new dedicated experiment consisting of an 1134 kg Pb target and 14 He-3 detectors with PE moderators and a fully digital readout. NEMESIS 1.4 has been taking data at the deepest level (1.4 km, 4000 m.w.e.) of the Pyhäsalmi mine, Finland, since November 2022. We describe the idea behind the new setup, compare the first results with the previous data and Monte Carlo simulations, and give the outlook for further research. If the existence of the anomalies is unambiguously confirmed and the model interpretation positively verified, this will be the first Indirect Detection of Dark Matter in the laboratory.en
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherSissa
dc.relation.ispartofTAUP2023 : XVIII International Conference on Topics in Astroparticle and Underground Physics
dc.relation.ispartofseriesPOS Proceedings of Science
dc.rightsCC BY-NC-ND 4.0
dc.titleNew Evidence for DM-like Anomalies in neutron multiplicity spectra
dc.typeconferenceObject
dc.identifier.urnURN:NBN:fi:jyu-202405033425
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/ConferencePaper
dc.type.coarhttp://purl.org/coar/resource_type/c_5794
dc.description.reviewstatuspeerReviewed
dc.relation.issn1824-8039
dc.type.versionpublishedVersion
dc.rights.copyright© Authors 2024
dc.rights.accesslevelopenAccessfi
dc.relation.conferenceInternational Conference on Topics in Astroparticle and Underground Physics
dc.subject.ysoilmaisimet
dc.subject.ysohiukkasfysiikka
dc.subject.ysopimeä aine
dc.subject.ysoastrofysiikka
dc.subject.ysotutkimuslaitteet
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p4220
jyx.subject.urihttp://www.yso.fi/onto/yso/p15576
jyx.subject.urihttp://www.yso.fi/onto/yso/p14101
jyx.subject.urihttp://www.yso.fi/onto/yso/p20188
jyx.subject.urihttp://www.yso.fi/onto/yso/p2440
dc.rights.urlhttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.relation.doi10.22323/1.441.0083
jyx.fundinginformationFinancial support from the Helsinki Institute of Physics, TechSource and Wihuri Foundation is gratefully acknowledged.
dc.type.okmA4


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