Deep-underground dark matter search with a COSINUS detector prototype

Fuente: arXiv

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Bibliographic Details
Main Authors:	The COSINUS Collaboration, Angloher, G., Bharadwaj, M. R., Dafinei, I., Di Marco, N., Einfalt, L., Ferroni, F., Fichtinger, S., Filipponi, A., Frank, T., Friedl, M., Fuss, A., Ge, Z., Heikinheimo, M., Hughes, M. N., Huitu, K., Kellermann, M., Maji, R., Mancuso, M., Pagnanini, L., Petricca, F., Pirro, S., Proebst, F., Profeta, G., Puiu, A., Reindl, F., Schaeffner, K., Schieck, J., Schmiedmayer, D., Schwertner, C., Shera, K., Stahlberg, M., Stendahl, A., Stukel, M., Tresca, C., Wagner, F., Yue, S., Zema, V., Zhu, Y.
Format:	Preprint
Published:	2023
Subjects:	Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics
Online Access:	Acceder al recurso
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author	The COSINUS Collaboration Angloher, G. Bharadwaj, M. R. Dafinei, I. Di Marco, N. Einfalt, L. Ferroni, F. Fichtinger, S. Filipponi, A. Frank, T. Friedl, M. Fuss, A. Ge, Z. Heikinheimo, M. Hughes, M. N. Huitu, K. Kellermann, M. Maji, R. Mancuso, M. Pagnanini, L. Petricca, F. Pirro, S. Proebst, F. Profeta, G. Puiu, A. Reindl, F. Schaeffner, K. Schieck, J. Schmiedmayer, D. Schwertner, C. Shera, K. Stahlberg, M. Stendahl, A. Stukel, M. Tresca, C. Wagner, F. Yue, S. Zema, V. Zhu, Y.
author_facet	The COSINUS Collaboration Angloher, G. Bharadwaj, M. R. Dafinei, I. Di Marco, N. Einfalt, L. Ferroni, F. Fichtinger, S. Filipponi, A. Frank, T. Friedl, M. Fuss, A. Ge, Z. Heikinheimo, M. Hughes, M. N. Huitu, K. Kellermann, M. Maji, R. Mancuso, M. Pagnanini, L. Petricca, F. Pirro, S. Proebst, F. Profeta, G. Puiu, A. Reindl, F. Schaeffner, K. Schieck, J. Schmiedmayer, D. Schwertner, C. Shera, K. Stahlberg, M. Stendahl, A. Stukel, M. Tresca, C. Wagner, F. Yue, S. Zema, V. Zhu, Y.
contents	Sodium iodide (NaI) based cryogenic scintillating calorimeters using quantum sensors for signal read out have shown promising first results towards 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 letter, we outline the first underground measurement of a NaI cryogenic calorimeter read out 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 $e^-$/$γ$-events to nuclear recoils was observed with a five-fold improvement in the nuclear recoil baseline resolution, achieving $σ$ = 441 eV. Furthermore, we present a limit on the spin-independent dark-matter nucleon elastic scattering cross-section achieving a sensitivity of $\mathcal{O}$(pb) with an exposure of only 11.6 g d.
format	Preprint
id	arxiv_https___arxiv_org_abs_2307_11139
institution	arXiv
publishDate	2023
record_format	arxiv
spellingShingle	Deep-underground dark matter search with a COSINUS detector prototype The COSINUS Collaboration Angloher, G. Bharadwaj, M. R. Dafinei, I. Di Marco, N. Einfalt, L. Ferroni, F. Fichtinger, S. Filipponi, A. Frank, T. Friedl, M. Fuss, A. Ge, Z. Heikinheimo, M. Hughes, M. N. Huitu, K. Kellermann, M. Maji, R. Mancuso, M. Pagnanini, L. Petricca, F. Pirro, S. Proebst, F. Profeta, G. Puiu, A. Reindl, F. Schaeffner, K. Schieck, J. Schmiedmayer, D. Schwertner, C. Shera, K. Stahlberg, M. Stendahl, A. Stukel, M. Tresca, C. Wagner, F. Yue, S. Zema, V. Zhu, Y. Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics Sodium iodide (NaI) based cryogenic scintillating calorimeters using quantum sensors for signal read out have shown promising first results towards 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 letter, we outline the first underground measurement of a NaI cryogenic calorimeter read out 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 $e^-$/$γ$-events to nuclear recoils was observed with a five-fold improvement in the nuclear recoil baseline resolution, achieving $σ$ = 441 eV. Furthermore, we present a limit on the spin-independent dark-matter nucleon elastic scattering cross-section achieving a sensitivity of $\mathcal{O}$(pb) with an exposure of only 11.6 g d.
title	Deep-underground dark matter search with a COSINUS detector prototype
topic	Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics
url	https://arxiv.org/abs/2307.11139