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A new measurement of the quenching factor for low-energy nuclear recoils in CsI[Na] is presented. Past measurements are revisited, identifying and correcting several systematic effects. The resulting global data are well-described by a…

Nuclear Experiment · Physics 2019-08-28 J. I. Collar , A. R. L. Kavner , C. M. Lewis

Recent measurements of the germanium quenching factor deviate significantly from the predictions of the standard Lindhard model for nuclear recoil energies below a keV. This departure may be explained by the Migdal effect in neutron…

High Energy Physics - Phenomenology · Physics 2021-07-05 Jiajun Liao , Hongkai Liu , Danny Marfatia

The recent evidence for coherent elastic neutrino-nucleus scattering (CE$\nu$NS) in the NCC-1701 germanium detector using antineutrinos from the Dresden-II nuclear reactor is in good agreement with standard model expectations. However, we…

High Energy Physics - Phenomenology · Physics 2023-08-17 Jiajun Liao , Hongkai Liu , Danny Marfatia

The Dresden-II reactor experiment has recently reported a suggestive evidence for the observation of coherent elastic neutrino-nucleus scattering, using a germanium detector. Given the low recoil energy threshold, these data are…

High Energy Physics - Phenomenology · Physics 2022-09-19 D. Aristizabal Sierra , V. De Romeri , D. K. Papoulias

The 96.4 day exposure of a 3 kg ultra-low noise germanium detector to the high flux of antineutrinos from a power nuclear reactor is described. A very strong preference ($p<1.2\times10^{-3}$) for the presence of a coherent elastic…

High Energy Physics - Experiment · Physics 2022-11-22 J. Colaresi , J. I. Collar , T. W. Hossbach , C. M. Lewis , K. M. Yocum

Recent results on the Coherent Elastic Neutrino-Nucleus Scattering (CE$\nu$NS) on germanium present significant discrepancies among experiments. We perform a combined analysis of the Dresden-II, CONUS+ and COHERENT data, quantifying the…

High Energy Physics - Phenomenology · Physics 2025-05-02 Yulun Li , Gonzalo Herrera , Patrick Huber

Coherent elastic neutrino-nucleus scattering (CE$\nu$NS) represents a powerful tool to investigate key electroweak physics parameters and neutrino properties since its first observation in 2017 by the COHERENT experiment exploiting the…

High Energy Physics - Phenomenology · Physics 2023-03-15 M. Atzori Corona , M. Cadeddu , N. Cargioli , F. Dordei , C. Giunti , Y. F. Li , C. A. Ternes , Y. Y. Zhang

Germanium is the detector material of choice in many rare-event searches looking for low-energy nuclear recoils induced by dark matter particles or neutrinos. We perform a systematic exploration of its quenching factor for sub-keV nuclear…

Nuclear Experiment · Physics 2021-06-30 J. I. Collar , A. R. L. Kavner , C. M. Lewis

We present an updated analysis of the coherent neutrino-nucleus elastic scattering data of the COHERENT experiment taking into account the new quenching factor published recently in Phys. Rev. D100, 033003 (2019). Through a fit of the…

High Energy Physics - Phenomenology · Physics 2020-02-26 M. Cadeddu , F. Dordei , C. Giunti , Y. F. Li , Y. Y. Zhang

The CONUS+ collaboration has reported their first observation of coherent elastic neutrino-nucleus scattering (CE$\nu$NS). The experiment uses reactor electron antineutrinos and germanium detectors with recoil thresholds as low as…

High Energy Physics - Phenomenology · Physics 2025-04-24 Valentina De Romeri , Dimitrios K. Papoulias , Gonzalo Sanchez Garcia

We have developed a novel methodology utilizing molecular dynamics simulations to evaluate the ionization yields of nuclear recoils in crystalline silicon. This approach enables analytical exploration of atomic-scale transport within the…

Instrumentation and Methods for Astrophysics · Physics 2025-11-17 Chang-Hao Fang , Shin-Ted Lin , Shu-Kui Liu , Henry Tsz-King Wong , Hao-Yang Xing , Li-Tao Yang , Qian Yue , Jing-Jun Zhu

Plastic scintillators are widely used in industry, medicine and scientific research, including nuclear and particle physics. Although one of their most common applications is in neutron detection, experimental data on their response to…

This article reports the measurement of the ionization quenching factor in germanium for nuclear recoil energies between 0.4 and 6.3 keV$_{nr}$. Precise knowledge of this factor in this energy range is relevant for coherent elastic…

Instrumentation and Detectors · Physics 2022-09-20 A. Bonhomme , H. Bonet , C. Buck , J. Hakenmüller , G. Heusser , T. Hugle , M. Lindner , W. Maneschg , R. Nolte , T. Rink , E. Pirovano , H. Strecker

We employ an $^{88}$Y/Be photoneutron source to derive the quenching factor for neutron-induced nuclear recoils in germanium, probing recoil energies from a few hundred eV$_{nr}$ to 8.5keV$_{nr}$. A comprehensive Monte Carlo simulation of…

Instrumentation and Detectors · Physics 2016-12-28 B. J. Scholz , A. E. Chavarria , J. I. Collar , P. Privitera , A. E. Robinson

Recently an improved quenching factor (QF) measurement for low-energy nuclear recoils in CsI[Na] has been reported by the COHERENT Collaboration. The new energy-dependent QF is characterized by a reduced systematic uncertainty and leads to…

High Energy Physics - Phenomenology · Physics 2021-01-04 Dimitrios K. Papoulias

Neutrino scattering on electrons is considered as a tool for laboratory searches of the neutrino magnetic moment. We study inelastic $\bar\nu_ee^-$-scattering on electrons bound in the germanium (Z=32) and iodine (Z=53) atoms for…

High Energy Physics - Phenomenology · Physics 2009-10-31 S. A. Fayans , L. A. Mikaelyan , V. V. Sinev

We present a combined analysis of recent CE$\nu$NS data on germanium from two complementary experiments: COHERENT, which uses neutrinos from pion decay at rest, and CONUS+, which detects reactor antineutrinos. Exploiting the complementarity…

High Energy Physics - Phenomenology · Physics 2026-05-27 Valentina De Romeri , Laura Duque , Dimitrios K. Papoulias , G. Sanchez Garcia , Christoph A. Ternes

We propose an experimental setup to observe coherent elastic neutrino-atom scattering (CE$\nu$AS) using electron antineutrinos from tritium decay and a liquid helium target. In this scattering process with the whole atom, that has not beeen…

High Energy Physics - Phenomenology · Physics 2019-11-06 M. Cadeddu , F. Dordei , C. Giunti , K. A. Kouzakov , E. Picciau , A. I. Studenikin

We have performed measurements of sodium nuclear recoils in NaI:Tl crystals, following scattering by neutrons produced in a $^{7}$Li(p,n)$^{7}$Be reaction. Understanding the light output from such recoils, which is reduced relative to…

Elastic scattering off nuclei in target detectors, involving interactions with dark matter and coherent elastic neutrino nuclear recoil (CE$\nu$NS), results in the deposition of low energy within the nuclei, dissipating rapidly through a…

High Energy Physics - Experiment · Physics 2024-07-10 S. H. Lee , H. W. Joo , H. J. Kim , K. W. Kim , S. K. Kim , Y. D. Kim , Y. J. Ko , H. S. Lee , J. Y. Lee , H. S. Park , Y. S. Yoon
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