Deep-underground dark matter search with a COSINUS detector prototype

Sodium iodide (NaI)-based cryogenic scintillating calorimeters using quantum sensors for signal readout have shown promising first results toward a model-independent test of the annually modulating signal detected by the DAMA/LIBRA dark matter experiment. The COSINUS Collaboration has previously reported on the first above-ground measurements using a dual-channel readout of phonons and light based on transition edge sensors (TESs) that allows for particle discrimination on an event-by-event basis. In this article, we outline the first underground measurement of a NaI cryogenic calorimeter readout via the novel remoTES scheme. A 3.67 g NaI absorber with an improved silicon light detector design was operated at the Laboratori Nazionali del Gran Sasso, Italy. A significant improvement in the discrimination power of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msup><a:mrow><a:mi>e</a:mi></a:mrow><a:mrow><a:mo>−</a:mo></a:mrow></a:msup><a:mo>/</a:mo><a:mi>γ</a:mi></a:mrow></a:math> events to nuclear recoils was observed with a fivefold improvement in the nuclear recoil baseline resolution, achieving <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mi>σ</c:mi><c:mo>=</c:mo><c:mn>441</c:mn><c:mtext> </c:mtext><c:mtext> </c:mtext><c:mi>eV</c:mi></c:math>. Furthermore, we present a limit on the spin-independent dark matter nucleon elastic scattering cross section, achieving a sensitivity of <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mi mathvariant="script">O</e:mi><e:mo stretchy="false">(</e:mo><e:mi>pb</e:mi><e:mo stretchy="false">)</e:mo></e:math> with an exposure of only 11.6 g d. Published by the American Physical Society 2024

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Journal
Physical review. D/Physical review. D.
Published
2024-08-05
DOI
https://doi.org/10.1103/physrevd.110.043010
Citations
14
Primary Topic
Dark Matter and Cosmic Phenomena
Type
article
Field-Weighted Citation Impact
9.23

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article

Deep-underground dark matter search with a COSINUS detector prototype

A. Stendahl, I. Dafinei, Z. W. Ge, F. Petricca et al.
14 citations
Physical review. D/Physical review. D.
Dark Matter and Cosmic Phenomena
9.23
article

Deep-underground dark matter search with a COSINUS detector prototype

A. Stendahl, I. Dafinei, Z. W. Ge, F. Petricca, S. Fichtinger, V. Zema, M. Stukel, Cesare Tresca, C. Schwertner, L. Pagnanini, F. Reindl, Matti Heikinheimo, F. Wagner, A. Fuß, Y. Zhu, M. Mancuso, M. Stahlberg, Martin Hughes, D. Schmiedmayer, G. Angloher, A. Filipponi, Shijing Yue, G. Profeta, F. Pröbst, L. Einfalt, J. Schieck, A. Puiu, K. Shera, N. Di Marco, S. Pirro, Katri Huitu, Moritz Kellermann, M. Friedl, F. Ferroni, K. Schäffner, T. Frank, R. Maji
article en
14 citations

Abstract

Sodium iodide (NaI)-based cryogenic scintillating calorimeters using quantum sensors for signal readout have shown promising first results toward a model-independent test of the annually modulating signal detected by the DAMA/LIBRA dark matter experiment. The COSINUS Collaboration has previously reported on the first above-ground measurements using a dual-channel readout of phonons and light based on transition edge sensors (TESs) that allows for particle discrimination on an event-by-event basis. In this article, we outline the first underground measurement of a NaI cryogenic calorimeter readout via the novel remoTES scheme. A 3.67 g NaI absorber with an improved silicon light detector design was operated at the Laboratori Nazionali del Gran Sasso, Italy. A significant improvement in the discrimination power of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msup><a:mrow><a:mi>e</a:mi></a:mrow><a:mrow><a:mo>−</a:mo></a:mrow></a:msup><a:mo>/</a:mo><a:mi>γ</a:mi></a:mrow></a:math> events to nuclear recoils was observed with a fivefold improvement in the nuclear recoil baseline resolution, achieving <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mi>σ</c:mi><c:mo>=</c:mo><c:mn>441</c:mn><c:mtext> </c:mtext><c:mtext> </c:mtext><c:mi>eV</c:mi></c:math>. Furthermore, we present a limit on the spin-independent dark matter nucleon elastic scattering cross section, achieving a sensitivity of <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mi mathvariant="script">O</e:mi><e:mo stretchy="false">(</e:mo><e:mi>pb</e:mi><e:mo stretchy="false">)</e:mo></e:math> with an exposure of only 11.6 g d. Published by the American Physical Society 2024

Physical review. D/Physical review. D.Vol. 110(4)
University of Helsinki (FI), TU Wien (AT), University of L'Aquila (IT), Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso (IT), Max Planck Institute for Physics (DE), Institute of High Energy Physics (AT), Gran Sasso Science Institute (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Roma I (IT), Shanghai Institute of Ceramics (CN)
Academy of Finland, Austrian Science Fund, Österreichische Forschungsförderungsgesellschaft, Väisälän Rahasto
Reduced inequalities
Openalex Percentile: Top 2%
Dark Matter and Cosmic Phenomena
9.23
DOIOpen Access PDFOpenAlex
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