A5034202054- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Astrophysics and Cosmic Phenomena
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Cold Fusion and Nuclear Reactions
- Radioactive Decay and Measurement Techniques
- Nuclear physics research studies
- International Science and Diplomacy
- Superconducting and THz Device Technology
- Cosmology and Gravitation Theories
- Particle accelerators and beam dynamics
- Computational Physics and Python Applications
- Muon and positron interactions and applications
Institut National de Physique Nucléaire et de Physique des Particules
2002-2023
Centre National de la Recherche Scientifique
2002-2023
Université Grenoble Alpes
1997-2023
Institut polytechnique de Grenoble
2018-2023
Laboratoire de Physique Subatomique et de Cosmologie
1990-2023
University of Hassan II Casablanca
2020
Université Joseph Fourier
1990-2008
Centre de Gestion Scientifique
1996
Centre de physique des particules de Marseille
1990
Collège de France
1990
The STEREO experiment is a very short baseline reactor antineutrino experiment. It designed to test the hypothesis of light sterile neutrinos being cause deficit observed interaction rate at baselines with respect predicted rate, known as anomaly. measures energy spectrum in six identical detector cells covering between 9 and 11 m from compact core ILL research reactor. In this article, results 179 days turned on 235 off are reported high degree detail. current include improvements modelling...
The reactor antineutrino anomaly might be explained by the oscillation of antineutrinos toward a sterile neutrino eV mass. In order to explore this hypothesis, STEREO experiment measures energy spectrum in six different detector cells covering baselines between 9 and 11 m from compact core ILL research reactor. Letter, results 66 days turned on 138 off are reported. A novel method extract rates has been developed based distribution pulse shape discrimination parameter. test new is performed...
The STEREO experiment is a very short baseline reactor antineutrino aiming at testing the hypothesis of light sterile neutrinos as an explanation deficit observed neutrino interaction rate with respect to predicted rate, known Reactor Antineutrino Anomaly. detector center located 10 m away from compact, highly 235U enriched core research nuclear Institut Laue Langevin in Grenoble, France. This paper describes site, components and associated shielding designed suppress external sources...
Abstract The future Ricochet experiment aims at searching for new physics in the electroweak sector by providing a high precision measurement of Coherent Elastic Neutrino-Nucleus Scattering (CENNS) process down to sub-100 eV nuclear recoil energy range. will deploy kg-scale low-energy-threshold detector array combining Ge and Zn target crystals 8.8 m away from 58 MW research reactor core Institut Laue Langevin (ILL) Grenoble, France. Currently, Collaboration is characterizing backgrounds its...
The MUNU experiment was carried out at the Bugey nuclear power reactor. aim study of ν̄ee− elastic scattering low energy. recoil electrons were recorded in a gas time projection chamber, immersed tank filled with liquid scintillator serving as veto detector, suppressing particular Compton electrons. measured electron spectrum is presented. Upper limits on neutrino magnetic moment derived and are discussed.
This article reports the measurement of $^{235}$U-induced antineutrino spectrum shape by STEREO experiment. 43'000 antineutrinos have been detected at about 10 m from highly enriched core ILL reactor during 118 full days equivalent nominal power. The measured inverse beta decay is unfolded to provide a pure $^{235}$U in energy. A careful study unfolding procedure, including cross-validation an independent framework, has shown that no major biases are introduced method. significant local...
The PROSPECT and STEREO collaborations present a combined measurement of the pure ^{235}U antineutrino spectrum, without site specific corrections or detector-dependent effects. spectral measurements two highest precision experiments at research reactors are found to be compatible with χ^{2}/ndf=24.1/21, allowing joint unfolding prompt energy into energy. This ν[over ¯]_{e} spectrum is provided community, an excess events relative Huber model in 5-6 MeV region. When Gaussian bump fitted...
We report a measurement of the antineutrino rate from fission ^{235}U with STEREO detector using 119 days reactor turned on. In our analysis, we perform several detailed corrections and achieve most precise single at reactors highly enriched fuel. measure an IBD cross section per σ_{f}=(6.34±0.06[stat]±0.15[sys]±0.15[model])×10^{-43} cm^{2}/fission observe deficit (5.2±0.8[stat]±2.3[sys]±2.3[model])% compared to model, consistent world average. Testing as sole source deficit, find tension...
Abstract. The STEREO experiment measures the electron antineutrino spectrum emitted in a research reactor using inverse beta decay reaction on H nuclei gadolinium loaded liquid scintillator. detection is based signal coincidence of prompt positron and delayed neutron capture event. simulated response crucial for comparison with data, particular case efficiency. Among all stable isotopes, 155 Gd 157 have highest cross sections thermal capture. excited after emit gamma rays total energy about...
Different extensions of the standard model particle physics, such as braneworld or mirror matter models, predict existence a neutron sterile state, possibly dark candidate. This Letter reports new experimental constraint on probability p for conversion into hidden neutron, set by STEREO experiment at high flux reactor Institut Laue-Langevin. The limit is p<3.1×10^{-11} 95% C.L. improving previous factor 13. result demonstrates that short-baseline neutrino experiments can be used competitive...
In this paper we present the results from measurements made with MUNU Time Projection Chamber (TPC) at 1 bar pressure of CF4 in energy region below MeV. Electron events down to 80 keV are successfully measured. The electron and direction reconstructed for every contained single above 200 keV. As a test 137Cs photopeak is by measuring both Compton electrons TPC.