Evidence of Coherent Elastic Neutrino-Nucleus Scattering with COHERENT’s Germanium Array
We report the first detection of coherent elastic neutrino-nucleus scattering (CEvNS) on natural germanium, measured at the Spallation Neutron Source at Oak Ridge National Laboratory. The Ge-Mini detector of the COHERENT collaboration employs large-mass, low-noise, high-purity germanium spectrometers, enabling excellent energy resolution, and an analysis threshold of 1.5 keV electron-equivalent ionization energy. We observe an on-beam excess of 20.6_{-6.3}^{+7.1} counts with a total exposure of 10.22 GWhkg, and we reject the no-CEvNS hypothesis with 3.9σ significance. The result agrees with the predicted standard model of particle physics signal rate within 2σ.
Authors
- V. da Silva
- V. Belov
- K. Ding (ORCID: https://orcid.org/0009-0005-8055-0858)
- A. Khromov
- Kulwinder Singh Mann (ORCID: https://orcid.org/0000-0001-5013-7919)
- C.-H. Yu (ORCID: https://orcid.org/0000-0002-9849-842X)
- G. Simakov
- A. Erlandson (ORCID: https://orcid.org/0000-0002-7165-1121)
- D. Rudik (ORCID: https://orcid.org/0000-0001-5585-7253)
- H. F. Jones (ORCID: https://orcid.org/0000-0003-1383-1527)
- J. Runge (ORCID: https://orcid.org/0000-0001-9797-9769)
- L. Fabris (ORCID: https://orcid.org/0000-0001-5605-5615)
- B. Suh
- Hwancheol Jeong (ORCID: https://orcid.org/0000-0002-9544-6421)
- O. Kyzylova
- P. E. Mueller
- J. Liu
- K. Tellez-Giron-Flores
- G. C. Rich (ORCID: https://orcid.org/0000-0001-7699-2083)
- D. J. Kim (ORCID: https://orcid.org/0000-0002-4816-283X)
- T. Johnson
- H. Ray
- Bankole A. Johnson (ORCID: https://orcid.org/0000-0002-8901-6177)
- Myunggeun Ahn
- D. M. Markoff (ORCID: https://orcid.org/0000-0002-2313-5763)
- S. Hedges (ORCID: https://orcid.org/0000-0001-6255-2933)
- Y. Efremenko
- B. Sur (ORCID: https://orcid.org/0000-0002-4979-6930)
- I. Bernardi
- T. Subedi (ORCID: https://orcid.org/0009-0001-0860-0946)
- E. M. Ward
- J. Hakenmüller (ORCID: https://orcid.org/0000-0003-0470-3320)
- J. Yoo (ORCID: https://orcid.org/0000-0002-3826-1332)
- D. J. Salvat (ORCID: https://orcid.org/0000-0002-0556-5436)
- E. Kozlova
- A. M. Konovalov (ORCID: https://orcid.org/0000-0003-0647-9211)
- M. Luxnat
- S. R. Elliott
- L. Li (ORCID: https://orcid.org/0000-0001-6411-6107)
- Angela Rivera (ORCID: https://orcid.org/0000-0003-0827-0788)
- W. M. Snow (ORCID: https://orcid.org/0000-0002-8931-5513)
- J. A. Detwiler (ORCID: https://orcid.org/0000-0002-9050-4610)
- A. Galindo-Uribarri (ORCID: https://orcid.org/0000-0001-7450-404X)
- M. Stringer
- A. Bolozdynya
- B. Cabrera-Palmer
- M. P. Green (ORCID: https://orcid.org/0000-0002-1958-8030)
- C. J. Virtue
- J. Sander
- M. R. Heath
- E. E. van Nieuwenhuizen
- M. R. Durand
- J. M. Link (ORCID: https://orcid.org/0000-0002-1514-0650)
- C. G. Prior (ORCID: https://orcid.org/0000-0003-4684-0788)
- K. Scholberg (ORCID: https://orcid.org/0000-0002-7007-2021)
- J. Daughhetee
- V. Sosnovtsev (ORCID: https://orcid.org/0000-0001-6465-8280)
- R. Bouabid
- A. Kumpan (ORCID: https://orcid.org/0000-0002-3947-7661)
- J. O’Reilly (ORCID: https://orcid.org/0000-0001-6695-9693)
- Y. Yang (ORCID: https://orcid.org/0009-0003-8956-256X)
- O. Razuvaeva
- D. Reyna
- D. Pérez–Loureiro (ORCID: https://orcid.org/0000-0002-0609-1308)
- A. Shakirov (ORCID: https://orcid.org/0000-0003-1749-2251)
- P. S. Barbeau (ORCID: https://orcid.org/0000-0002-8891-8988)
- K. Walkup (ORCID: https://orcid.org/0009-0002-4550-7203)
- J. Moye
- D. S. Parno (ORCID: https://orcid.org/0000-0002-9363-0401)
- R. Tayloe (ORCID: https://orcid.org/0000-0002-3732-6093)
- Adryanna Major (ORCID: https://orcid.org/0000-0002-5754-2316)
- R. Rapp (ORCID: https://orcid.org/0000-0003-4590-687X)
- D. Pershey (ORCID: https://orcid.org/0000-0003-4298-0337)
- N. Ogoi
- J. Queen
- A. Zaalishvili
- S. Adamski
- N. Cedarblade-Jones
- J. Newby (ORCID: https://orcid.org/0000-0003-3571-1067)
- Carolyn Mattingly (ORCID: https://orcid.org/0000-0002-2146-9436)
- E. Conley (ORCID: https://orcid.org/0000-0003-1839-8910)
- Gordon Li (ORCID: https://orcid.org/0000-0001-8372-0676)
- J. Browning (ORCID: https://orcid.org/0009-0001-4914-0595)
- T. Wongjirad
- Y. Lee
- Y.-T. Tsai
- C. Bock
- G. Visser
Institutions
- Florida State University (US)
- Tufts University (US)
- North Carolina Central University (US)
- Oak Ridge National Laboratory (US)
- Los Alamos National Laboratory (US)
- North Carolina State University (US)
- Seoul National University (KR)
- Duke University (US)
- University of South Dakota (US)
- Joint Institute for Nuclear Astrophysics (US)
- Sandia National Laboratories California (US)
- University of Washington (US)
- Kurchatov Institute (RU)
- SLAC National Accelerator Laboratory (US)
- Washington and Jefferson College (US)
- University of Florida (US)
- Triangle Universities Nuclear Laboratory (US)
- Sandia National Laboratories (US)
- Indiana University Bloomington (US)
- Canadian Nuclear Laboratories (CA)
- Laurentian University (CA)
- Indiana University (US)
- Concord University (US)
- Carnegie Mellon University (US)
- University of Tennessee at Knoxville (US)
- Virginia Tech (US)
- National Research Nuclear University MEPhI (RU)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2025-06-09
- DOI
- https://doi.org/10.1103/physrevlett.134.231801
- Citations
- 19
- Primary Topic
- Particle physics theoretical and experimental studies
- Type
- article
- Field-Weighted Citation Impact
- 35.53
Funders
- National Science Foundation
- U.S. Department of Energy
- Alfred P. Sloan Foundation
- National Research Foundation
- National Research Foundation of Korea
- Ministry of Science and Higher Education of the Russian Federation
- Office of Science
- Laboratory Directed Research and Development
- Oak Ridge National Laboratory