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arxiv: 2405.06527 · v1 · pith:CXFMHJECnew · submitted 2024-05-10 · 🌌 astro-ph.CO

First observation of single photons in a CRESST detector and new dark matter exclusion limits

CRESST Collaboration: G. Angloher , S. Banik , G. Benato , A. Bento , A. Bertolini , R. Breier , C. Bucci , J. Burkhart
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L. Canonica A. D'Addabbo S. Di Lorenzo L. Einfalt A. Erb F. v. Feilitzsch S. Fichtinger D. Fuchs A. Garai V.M. Ghete P. Gorla P.V. Guillaumon S. Gupta D. Hauff M. Je\v{s}kovsk\'y J. Jochum M. Kaznacheeva A. Kinast H. Kluck H. Kraus S. Kuckuk A. Langenk\"amper M. Mancuso L. Marini B. Mauri L. Meyer V. Mokina M. Olmi T. Ortmann C. Pagliarone L. Pattavina F. Petricca W. Potzel P. Povinec F. Pr\"obst F. Pucci F. Reindl J. Rothe K. Sch\"affner J. Schieck S. Sch\"onert C. Schwertner M. Stahlberg L. Stodolsky C. Strandhagen R. Strauss I. Usherov F. Wagner V. Wagner V. Zema
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classification 🌌 astro-ph.CO
keywords darkmattercresstdetectiondetectorenergyexclusionfirst
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The main goal of the CRESST-III experiment is the direct detection of dark matter particles via their scattering off target nuclei in cryogenic detectors. In this work we present the results of a Silicon-On-Sapphire (SOS) detector with a mass of 0.6$\,$g and an energy threshold of (6.7$\, \pm \,$0.2)$\,$eV with a baseline energy resolution of (1.0$\, \pm \,$0.2)$\,$eV. This allowed for a calibration via the detection of single luminescence photons in the eV-range, which could be observed in CRESST for the first time. We present new exclusion limits on the spin-independent and spin-dependent dark matter-nucleon cross section that extend to dark matter particle masses of less than 100$\,$MeV/c$^{2}$.

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