New Evidence for DM-like Anomalies in neutron multiplicity spectra
dc.contributor.author | Trzaska, Wladyslaw Henryk | |
dc.contributor.author | Barzilov, Alex | |
dc.contributor.author | Enqvist, Timo | |
dc.contributor.author | Jędrzejczak, Karol | |
dc.contributor.author | Kasztelan, Marcin | |
dc.contributor.author | Kuusiniemi, Pasi | |
dc.contributor.author | Loo, Kai | |
dc.contributor.author | Orzechowski, Jerzy | |
dc.contributor.author | Słupecki, Maciej | |
dc.contributor.author | Szabelski, Jacek | |
dc.contributor.author | Ward, Tom | |
dc.contributor.editor | Mokina, Valentyna | |
dc.date.accessioned | 2024-05-03T11:35:18Z | |
dc.date.available | 2024-05-03T11:35:18Z | |
dc.date.issued | 2024 | |
dc.identifier.citation | Trzaska, 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.other | CONVID_213485734 | |
dc.identifier.uri | https://jyx.jyu.fi/handle/123456789/94696 | |
dc.description.abstract | Subterrestrial 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.mimetype | application/pdf | |
dc.language.iso | eng | |
dc.publisher | Sissa | |
dc.relation.ispartof | TAUP2023 : XVIII International Conference on Topics in Astroparticle and Underground Physics | |
dc.relation.ispartofseries | POS Proceedings of Science | |
dc.rights | CC BY-NC-ND 4.0 | |
dc.title | New Evidence for DM-like Anomalies in neutron multiplicity spectra | |
dc.type | conferenceObject | |
dc.identifier.urn | URN:NBN:fi:jyu-202405033425 | |
dc.contributor.laitos | Fysiikan laitos | fi |
dc.contributor.laitos | Department of Physics | en |
dc.type.uri | http://purl.org/eprint/type/ConferencePaper | |
dc.type.coar | http://purl.org/coar/resource_type/c_5794 | |
dc.description.reviewstatus | peerReviewed | |
dc.relation.issn | 1824-8039 | |
dc.type.version | publishedVersion | |
dc.rights.copyright | © Authors 2024 | |
dc.rights.accesslevel | openAccess | fi |
dc.relation.conference | International Conference on Topics in Astroparticle and Underground Physics | |
dc.subject.yso | ilmaisimet | |
dc.subject.yso | hiukkasfysiikka | |
dc.subject.yso | pimeä aine | |
dc.subject.yso | astrofysiikka | |
dc.subject.yso | tutkimuslaitteet | |
dc.format.content | fulltext | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p4220 | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p15576 | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p14101 | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p20188 | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p2440 | |
dc.rights.url | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.relation.doi | 10.22323/1.441.0083 | |
jyx.fundinginformation | Financial support from the Helsinki Institute of Physics, TechSource and Wihuri Foundation is gratefully acknowledged. | |
dc.type.okm | A4 |