A5053399256- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Nuclear physics research studies
- Medical Imaging and Pathology Studies
- Atomic and Subatomic Physics Research
- Cancer Treatment and Pharmacology
- Medical Imaging Techniques and Applications
- Nuclear Physics and Applications
- Radiation Effects in Electronics
- Superconducting and THz Device Technology
- Muon and positron interactions and applications
- Radioactivity and Radon Measurements
- Integrated Circuits and Semiconductor Failure Analysis
- Cosmology and Gravitation Theories
- CCD and CMOS Imaging Sensors
- Radioactive contamination and transfer
- Radioactive Decay and Measurement Techniques
- VLSI and Analog Circuit Testing
- Radio Astronomy Observations and Technology
- Advanced Chemical Physics Studies
- Particle accelerators and beam dynamics
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2019-2025
Institut National de Physique Nucléaire et de Physique des Particules
2015-2024
Centre National de la Recherche Scientifique
2015-2024
Université Paris-Saclay
2016-2024
Université Paris-Sud
2015-2021
GANIL
2017-2021
Université Paris Cité
2021
University College London
2020
Mitochondrie, stress oxydant et protection musculaire
2008-2019
University of Manchester
2017
We report constraints on sub-GeV dark matter particles interacting with electrons from the first underground operation of DAMIC-M detectors. The search is performed an integrated exposure 85.23 g days, and exploits subelectron charge resolution low level current charge-coupled devices (CCDs). Dark-matter-induced ionization signals above detector are searched for in CCD pixels up to 7e^{-}. With this dataset we place limits mass between 0.53 1000 MeV/c^{2}, excluding unexplored regions...
The EDELWEISS-II Collaboration has completed a direct search for WIMP dark matter with an array of ten 400-g cryogenic germanium detectors in operation at the Laboratoire Souterrain de Modane. combined use thermal phonon sensors and charge collection electrodes interleaved geometry enables efficient rejection γ-induced radioactivity as well near-surface interactions. A total effective exposure 384 kg d been achieved, mostly coming from fourteen months continuous operation. Five nuclear...
Observing double beta decay with no neutrinos in the final state, would signal existence of lepton number violating processes and hint at neutrino being a Majorana particle. The impressive effort represented by NEMO-3 experiment sets important constraints on mass lepton-number processes.
We report on a search for low-energy (E < 20 keV) WIMP-induced nuclear recoils using data collected in 2009 - 2010 by EDELWEISS from four germanium detectors equipped with thermal sensors and an electrode design (ID) which allows to efficiently reject several sources of background. The indicate no evidence exponential distribution that could be attributed WIMP elastic scattering after exposure 113 kg.d. For WIMPs mass 10 GeV, the observation one event region results 90% CL limit 1.0x10^-5 pb...
Abstract CUPID-Mo is a bolometric experiment to search for neutrinoless double-beta decay ( $$0\nu \beta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>0</mml:mn><mml:mi>ν</mml:mi><mml:mi>β</mml:mi><mml:mi>β</mml:mi></mml:mrow></mml:math> ) of $$^{100}\hbox {Mo}$$ xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow /><mml:mn>100</mml:mn></mml:msup><mml:mtext>Mo</mml:mtext></mml:mrow></mml:math> . In this article, we detail the detector...
The CUPID-Mo experiment at the Laboratoire Souterrain de Modane (France) is a demonstrator for CUPID, next-generation ton-scale bolometric $0\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ experiment. It consists of 4.2 kg array 20 enriched ${\mathrm{Li}}_{2}$$^{100}\mathrm{Mo}{\mathrm{O}}_{4}$ scintillating bolometers to search lepton-number-violating process decay in $^{100}\mathrm{Mo}$. With more than one year operation ($^{100}\mathrm{Mo}$ exposure $1.17\text{ }\text{...
Abstract The CUPID-Mo experiment to search for 0 $$\nu \beta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>ν</mml:mi> <mml:mi>β</mml:mi> </mml:mrow> </mml:math> decay in $$^{100}$$ <mml:msup> <mml:mrow /> <mml:mn>100</mml:mn> </mml:msup> Mo has been recently completed after about 1.5 years of operation at Laboratoire Souterrain de Modane (France). It served as a demonstrator CUPID, next generation experiment. was comprised 20 enriched $$\hbox {Li}_{{2}}$$...
Dark matter (DM) particles with sufficiently large cross sections may scatter as they travel through Earth’s bulk. The corresponding changes in the DM flux give rise to a characteristic daily modulation signal detectors sensitive DM-electron interactions. Here, we report results obtained from first underground operation of DAMIC-M prototype detector searching for such MeV-scale mass. A model-independent analysis finds no rate <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"...
The CDMS and EDELWEISS collaborations have combined the results of their direct searches for dark matter using cryogenic germanium detectors. total data set represents 614 kg.d equivalent exposure. A straightforward method combination was chosen its simplicity before were exchanged between experiments. are interpreted in terms limits on spin-independent WIMP-nucleon cross-section. For a WIMP mass 90 GeV/c^2, where this analysis is most sensitive, cross-section 3.3 x 10^{-44} cm^2 excluded at...
The NEMO-3 experiment at the Modane Underground Laboratory has investigated double-$\beta$ decay of $^{48}{\rm Ca}$. Using $5.25$ yr data recorded with a $6.99\,{\rm g}$ sample Ca}$, approximately $150$ candidate events have been selected signal-to-background ratio greater than $3$. half-life for two-neutrino Ca}$ measured to be $T^{2\nu}_{1/2}\,=\,[6.4\, ^{+0.7}_{-0.6}{\rm (stat.)} \, ^{+1.2}_{-0.9}{\rm (syst.)}] \times 10^{19}\,{\rm yr}$. A search neutrinoless yields null result and...
The NEMO-3 collaboration reports the half-life of ${}^{150}$Nd via two-neutrino double-beta decay mode to an unprecedented accuracy. For zero-neutrino ${}^{150}$Nd, distinctive signature possible Majorana nature neutrinos, no observations but sets new upper bounds for in various scenarios beyond standard model.
The full data set of the NEMO-3 experiment has been used to measure half-life two-neutrino double beta decay $$^{100}$$ Mo ground state Ru, $$T_{1/2} = \left[ 6.81 \pm 0.01\,\left( \text{ stat }\right) ^{+0.38}_{-0.40}\,\left( syst \right] \times 10^{18}$$ year. two-electron energy sum, single electron spectra and distribution angle between electrons are presented with an unprecedented statistics $$5\times 10^5$$ events a signal-to-background ratio $$\sim $$ 80. Clear evidence for Single...
Abstract We report the measurement of two-neutrino double-beta ( $$2\nu \beta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>2</mml:mn><mml:mi>ν</mml:mi><mml:mi>β</mml:mi><mml:mi>β</mml:mi></mml:mrow></mml:math> ) decay $$^{100}$$ xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow /><mml:mn>100</mml:mn></mml:msup></mml:math> Mo to ground state Ru using lithium molybdate $$\hbox {Li}_2^{\;\;100}\hbox {MoO}_4$$...
Neutrinoless double beta decay (0νββ) is a yet unobserved nuclear process that would demonstrate Lepton number violation, clear evidence of beyond standard model physics. The two neutrino (2νββ) allowed by the and has been measured in numerous experiments. In this Letter, we report measurement 2νββ half-life Mo100 to ground state Ru100 [7.07±0.02(stat)±0.11(syst)]×1018 yr CUPID-Mo experiment. With relative precision ±1.6% most precise date rate Mo100. addition, constrain higher-order...
The EDELWEISS-II Collaboration has performed a direct search for WIMP dark matter with an array of ten 400 g heat-and-ionization cryogenic detectors equipped interleaved electrodes the rejection near-surface events. Six months continuous operation at Laboratoire Souterrain de Modane have been achieved. observation one nuclear recoil candidate above 20 keV in effective exposure 144 kg d is interpreted terms limits on cross-section spin-independent interactions WIMPs and nucleons. A 1.0×10−7...
We report the results of a search for neutrinoless double-$\ensuremath{\beta}$ decay ($0\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$) $^{100}\mathrm{Mo}$, using NEMO-3 detector to reconstruct full topology final state events. With an exposure $34.7\text{ }\text{ }\mathrm{kg}\ifmmode\cdot\else\textperiodcentered\fi{}\mathrm{y}$, no evidence $0\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ signal has been found, yielding limit light Majorana neutrino mass mechanism...
Using data from the NEMO-3 experiment, we have measured two-neutrino double beta decay ( $$2\nu \beta $$ ) half-life of $$^{82}$$ Se as $$T_{\smash {1/2}}^{2\nu } \!=\! \left[ 9.39 \pm 0.17\left( \text{ stat }\right) 0.58\left( syst \right] \times 10^{19}$$ y under single-state dominance hypothesis for this nuclear transition. The corresponding matrix element is $$\left| M^{2\nu }\right| = 0.0498 0.0016$$ . In addition, a search neutrinoless $$0\nu using 0.93 kg observed total 5.25 has been...
We present results from a 3.25 kg-day target exposure of two silicon charge-coupled devices (CCDs), each with 24 megapixels and skipper readout, deployed in the DAMIC setup at SNOLAB. With reduction pixel readout noise factor 10 relative to previous detector, we investigate excess population low-energy events CCD bulk previously observed above expected backgrounds. address dominant systematic uncertainty analysis through depth fiducialization designed reject surface backgrounds on CCDs. The...
The Antarctic muon and neutrino detector array (AMANDA) began collecting data with ten strings in 1997. Results from the first year of operation are presented. Neutrinos coming through Earth Northern Hemisphere identified by secondary muons moving upward array. Cosmic rays atmosphere generate a background downward muons, which about ${10}^{6}$ times more abundant than muons. Over 130 days exposure, we observed total 300 events. In same period, $1.05\ifmmode\times\else\texttimes\fi{}{10}^{9}$...
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> We report real-time SER characterization of CMOS 65 nm SRAM memories in both altitude and underground environments. Neutron alpha-particle SERs are compared with data obtained from accelerated tests values previously measured for 130 technology. </para>
The NEMO-3 experiment measured the half-life of $2\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ decay and searched for $0\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ $^{116}\mathrm{Cd}$. Using 410 g $^{116}\mathrm{Cd}$ installed in detector with an exposure 5.26 y, ($4968\ifmmode\pm\else\textpm\fi{}74$) events corresponding to ground state $^{116}\mathrm{Sn}$ have been observed a signal background ratio about 12. has be...
The EURECA (European Underground Rare Event Calorimeter Array) project is aimed at searching for dark matter particles using cryogenic bolometers. proponents of the present have decided to pool their strengths and expertise build a facility house up 1000 kg detectors, EURECA, consisting in first instance germanium CaWO4 crystals. shielding will be provided through large water tank which cryostat with detectors immersed. infrastructure an essential tool community interested searches. Beyond...