M. L. Benabderrahmane
A5035726370- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Atomic and Subatomic Physics Research
- Quantum Chromodynamics and Particle Interactions
- Radio Astronomy Observations and Technology
- Gamma-ray bursts and supernovae
- Nuclear physics research studies
- Particle Detector Development and Performance
- Cosmology and Gravitation Theories
- Ionosphere and magnetosphere dynamics
- Particle accelerators and beam dynamics
- Radiation Detection and Scintillator Technologies
- Arctic and Antarctic ice dynamics
- Nuclear reactor physics and engineering
- Earthquake Detection and Analysis
- Cryospheric studies and observations
- Quantum, superfluid, helium dynamics
- Acoustic Wave Phenomena Research
- Lightning and Electromagnetic Phenomena
- Solar and Space Plasma Dynamics
- Atmospheric Ozone and Climate
- Scientific Research and Discoveries
New York University Abu Dhabi
2015-2023
Heidelberg University
2005-2019
New York University
2019
University of Wisconsin–River Falls
2012-2013
Providence College
2011-2012
University of Alaska Anchorage
2011-2012
Clark Atlanta University
2012
The University of Adelaide
2012
Humboldt-Universität zu Berlin
2011-2012
University of Wisconsin–Madison
2011-2012
We report on a search for weakly interacting massive particles (WIMPs) using 278.8 days of data collected with the XENON1T experiment at LNGS. utilizes liquid xenon time projection chamber fiducial mass (1.30±0.01) ton, resulting in 1.0 ton yr exposure. The energy region interest, [1.4,10.6] keV_{ee} ([4.9,40.9] keV_{nr}), exhibits an ultralow electron recoil background rate [82_{-3}^{+5}(syst)±3(stat)] events/(ton keV_{ee}). No significant excess over is found, and profile likelihood...
We report on results of an all-sky search for high-energy neutrino events interacting within the IceCube detector conducted between May 2010 and 2012. The follows up previous detection two PeV events, with improved sensitivity extended energy coverage down to about 30 TeV. Twenty-six additional were observed, substantially more than expected from atmospheric backgrounds. Combined, both searches reject a purely origin 28 at 4σ level. These which include highest neutrinos ever have flavors,...
We report the first dark matter search results from XENON1T, a ∼2000-kg-target-mass dual-phase (liquid-gas) xenon time projection chamber in operation at Laboratori Nazionali del Gran Sasso Italy and ton-scale detector of this kind. The blinded used 34.2 live days data acquired between November 2016 January 2017. Inside (1042±12)-kg fiducial mass [5,40] keV_{nr} energy range interest for weakly interacting massive particle (WIMP) searches, electronic recoil background was (1.93±0.25)×10^{-4}...
We report on the observation of two neutrino-induced events which have an estimated deposited energy in IceCube detector 1.04±0.16 and 1.14±0.17 PeV, respectively, highest neutrino energies observed so far. These are consistent with fully contained particle showers induced by neutral-current ν(e,μ,τ) (ν(e,μ,τ)) or charged-current ν(e) (ν(e)) interactions within detector. The were discovered a search for ultrahigh neutrinos using data corresponding to 615.9 days effective live time. expected...
DARk matter WImp search with liquid xenoN (DARWIN) will be an experiment for the direct detection of dark using a multi-ton xenon time projection chamber at its core. Its primary goal to explore experimentally accessible parameter space Weakly Interacting Massive Particles (WIMPs) in wide mass-range, until neutrino interactions target become irreducible background. The prompt scintillation light and charge signals induced by particle observed VUV sensitive, ultra-low background photosensors....
We report results from searches for new physics with low-energy electronic recoil data recorded the XENON1T detector. With an exposure of 0.65 tonne-years and unprecedentedly low background rate 76±2stat events/(tonne×year×keV) between 1 30 keV, enable one most sensitive solar axions, enhanced neutrino magnetic moment using neutrinos, bosonic dark matter. An excess over known backgrounds is observed at energies prominent 2 3 keV. The axion model has a 3.4σ significance, three-dimensional 90%...
We report constraints on light dark matter (DM) models using ionization signals in the XENON1T experiment. mitigate backgrounds with strong event selections, rather than requiring a scintillation signal, leaving an effective exposure of (22±3) tonne day. Above ∼0.4 keV_{ee}, we observe <1 event/(tonne day keV_{ee}), which is more 1000 times lower similar searches other detectors. Despite observing higher rate at energies, no DM or CEvNS detection may be claimed because cannot model all our...
XENONnT is a dark matter direct detection experiment, utilizing 5.9 t of instrumented liquid xenon, located at the INFN Laboratori Nazionali del Gran Sasso. In this work, we predict experimental background and project sensitivity to weakly interacting massive particles (WIMPs). The expected average differential rate in energy region interest, corresponding (1, 13) keV (4, 50) for electronic nuclear recoils, amounts $12.3 \pm 0.6$ (keV y)$^{-1}$ $(2.2\pm 0.5)\times 10^{-3}$ y)$^{-1}$,...
We have performed a search for muon neutrinos from dark matter annihilation in the center of Sun with 79-string configuration IceCube neutrino telescope. For first time, DeepCore sub-array is included analysis, lowering energy threshold and extending to austral summer. The 317 days data collected between June 2010 May 2011 are consistent expected background atmospheric muons neutrinos. Upper limits therefore set on rate, conversions spin-dependent spin-independent WIMP-proton cross-sections...
The XENON1T experiment at the Laboratori Nazionali del Gran Sasso (LNGS) is first WIMP dark matter detector operating with a liquid xenon target mass above ton-scale. Out of its 3.2t inventory, 2.0t constitute active dual-phase time projection chamber. scintillation and ionization signals from particle interactions are detected low-background photomultipliers. This article describes instrument subsystems as well strategies to achieve an unprecedented low background level. First results on...
We report the first experimental results on spin-dependent elastic weakly interacting massive particle (WIMP) nucleon scattering from XENON1T dark matter search experiment. The analysis uses full ton year exposure of to constrain proton-only and neutron-only cases. No significant signal excess is observed, a profile likelihood ratio used set exclusion limits WIMP-nucleon interactions. This includes most stringent constraint date WIMP-neutron cross section, with minimum 6.3×10^{-42} cm^{2} at...
Direct dark matter detection experiments based on a liquid xenon target are leading the search for particles with masses above $\sim$ 5 GeV/c$^2$, but have limited sensitivity to lighter because of small momentum transfer in matter-nucleus elastic scattering. However, there is an irreducible contribution from inelastic processes accompanying scattering, which leads excitation and ionization recoiling atom (the Migdal effect) or emission Bremsstrahlung photon. In this letter, we report probe...
The nature of dark matter and properties neutrinos are among the most pressing issues in contemporary particle physics. dual-phase xenon time-projection chamber is leading technology to cover available parameter space for Weakly Interacting Massive Particles (WIMPs), while featuring extensive sensitivity many alternative candidates. These detectors can also study through neutrinoless double-beta decay a variety astrophysical sources. A next-generation xenon-based detector will therefore be...
A measurement of the atmospheric muon neutrino energy spectrum from 100 GeV to 400 TeV was performed using a data sample about 18 000 up-going events in IceCube. Boosted decision trees were used for event selection reject misreconstructed muons and obtain events. Background contamination final is less than 1%. This first neutrinos up TeV, fundamental understanding impact this background on astrophysical observations with The measured consistent predictions...
A search for muon neutrinos from neutralino annihilations in the Sun has been performed with IceCube 22-string neutrino detector using data collected 104.3 days of live time 2007. No excess over expected atmospheric background observed. Upper limits have obtained on annihilation rate captured neutralinos and converted to weakly interacting massive particle (WIMP) proton cross sections WIMP masses range 250-5000 GeV. These results are most stringent date Sun.
We report on the measurement of all-particle cosmic ray energy spectrum with IceTop air shower array in range from 1.58 PeV to 1.26 EeV. The is surface component IceCube Neutrino Observatory at geographical South Pole. analysis was performed using only information IceTop. data used this work were taken June 1, 2010 May 13, 2011. During that period consisted 73 stations compared 81 its final configuration. measured exhibits a clear deviation single power law above knee around 4PeV and below...
This paper describes the response of IceCube neutrino telescope located at geographic South Pole to outbursts MeV neutrinos from core collapse nearby massive stars. was completed in December 2010 forming a lattice 5160 photomultiplier tubes that monitor volume ~ 1 cubic kilometer deep Antarctic ice for particle induced photons. The designed detect with energies greater than 100 GeV. Owing subfreezing temperatures, dark noise rates are particularly low. Hence can also large numbers by...
We present the results of time-integrated searches for astrophysical neutrino sources in both northern and southern skies. Data were collected using partially completed IceCube detector 40-string configuration recorded between 2008 April 5 2009 May 20, totaling 375.5 days livetime. An unbinned maximum likelihood ratio method is used to search signals. The data sample contains 36,900 events: 14,121 from sky, mostly muons induced by atmospheric neutrinos, 22,779 high-energy muons. analysis...