| Title: |
Searches for new physics below twice the electron mass with GERDA |
| Authors: |
Agostini, M; Alexander, A; Araujo, G; Bakalyarov, AM; Balata, M; Barabanov, I; Baudis, L; Bauer, C; Belogurov, S; Bettini, A; Bezrukov, L; Biancacci, V; Bossio, E; Bothe, V; Brugnera, R; Caldwell, A; Calgaro, S; Cattadori, C; Chernogorov, A; Chiu, PJ; Comellato, T; D’Andrea, V; Demidova, EV; Marco, ND; Doroshkevich, E; Fomina, M; Gangapshev, A; Garfagnini, A; Gooch, C; Grabmayr, P; Gurentsov, V; Gusev, K; Hakenmüller, J; Hemmer, S; Hofmann, W; Huang, J; Hult, M; Inzhechik, LV; Csáthy, JJ; Jochum, J; Junker, M; Kazalov, V; Kermaïdic, Y; Khushbakht, H; Kihm, T; Kilgus, K; Kirpichnikov, IV; Klimenko, A; Knöpfle, KT; Kochetov, O; Kornoukhov, VN; Krause, P; Kuzminov, VV; Laubenstein, M; Lindner, M; Lippi, I; Lubashevskiy, A; Lubsandorzhiev, B; Lutter, G; Macolino, C; Majorovits, B; Maneschg, W; Marshall, G; Misiaszek, M; Morella, M; Müller, Y; Nemchenok, I; Neuberger, M; Pandola, L; Pelczar, K; Pertoldi, L; Piseri, P; Pullia, A; Ransom, C; Rauscher, L; Redchuk, M; Riboldi, S; Rumyantseva, N; Sada, C; Sailer, S; Salamida, F; Schönert, S; Schreiner, J; Schütz, AK; Schulz, O; Schwarz, M; Schwingenheuer, B; Selivanenko, O; Shevchik, E; Shirchenko, M; Shtembari, L; Simgen, H; Smolnikov, A; Stukov, D; Sullivan, S; Vasenko, AA; Veresnikova, A; Vignoli, C; Sturm, KV; Wester, T |
| Source: |
European Physical Journal C , 84 (9) , Article 940. (2024) |
| Publisher Information: |
Springer Science and Business Media LLC |
| Publication Year: |
2024 |
| Collection: |
University College London: UCL Discovery |
| Subject Terms: |
GERDA Collaboration |
| Description: |
A search for full energy depositions from bosonic keV-scale dark matter candidates of masses between 65 and 1021 keV has been performed with data collected during Phase II of the GERmanium Detector Array (Gerda) experiment. Our analysis includes direct dark matter absorption as well as dark Compton scattering. With a total exposure of 105.5 kg years, no evidence for a signal above the background has been observed. The resulting exclusion limits deduced with either Bayesian or Frequentist statistics are the most stringent direct constraints in the major part of the 140–1021 keV mass range. As an example, at a mass of 150 keV the dimensionless coupling of dark photons and axion-like particles to electrons has been constrained to α′/α1.3×1024 years at 90% CI. For the electron decay e-→νeγ a lower limit of τe>5.4×1025 years at 90% CI has been determined. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
https://discovery.ucl.ac.uk/id/eprint/10199045/ |
| Availability: |
https://discovery.ucl.ac.uk/id/eprint/10199045/1/s10052-024-13020-0.pdf; https://discovery.ucl.ac.uk/id/eprint/10199045/ |
| Rights: |
open |
| Accession Number: |
edsbas.F19F787E |
| Database: |
BASE |