B. Belhorma
A5114378449- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- High-Energy Particle Collisions Research
- Radiation Detection and Scintillator Technologies
- Pulsars and Gravitational Waves Research
- Radio Astronomy Observations and Technology
- Gamma-ray bursts and supernovae
- Quantum Chromodynamics and Particle Interactions
- Nuclear Physics and Applications
- ZnO doping and properties
- Glass properties and applications
- Superconducting Materials and Applications
- Copper-based nanomaterials and applications
- Luminescence Properties of Advanced Materials
- Quantum Dots Synthesis And Properties
- Nuclear reactor physics and engineering
- Chalcogenide Semiconductor Thin Films
- Hybrid Renewable Energy Systems
- Wind Turbine Control Systems
- Ferroelectric and Piezoelectric Materials
- Adsorption and biosorption for pollutant removal
- Wind Energy Research and Development
National Centre for Nuclear Energy, Science and Technology
2016-2025
Université Joseph Fourier
2000-2020
University of Bologna
2020
University of Hassan II Casablanca
2014
Centre National de la Recherche Scientifique
2000-2011
Université Grenoble Alpes
2010-2011
Laboratoire de Physique Subatomique et de Cosmologie
2000-2011
Institut National de Physique Nucléaire et de Physique des Particules
2000-2011
European Organization for Nuclear Research
2011
Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Udine
2010
The main objectives of the KM3NeT Collaboration are (i) discovery and subsequent observation high-energy neutrino sources in Universe (ii) determination mass hierarchy neutrinos. These strongly motivated by two recent important discoveries, namely: (1) astrophysical signal reported IceCube (2) sizable contribution electron neutrinos to third eigenstate as Daya Bay, Reno others. To meet these objectives, plans build a new Research Infrastructure consisting network deep-sea telescopes...
Interactions of cosmic ray protons, atomic nuclei, and electrons in the interstellar medium inner part Milky Way produce a $\gamma$-ray flux from Galactic Ridge. If emission is dominated by proton nuclei interactions, neutrino comparable to expected same sky region. Data collected ANTARES telescope are used constrain Ridge 1-100 TeV energy range. Neutrino events reconstructed both as tracks showers considered analysis selection optimized for search an excess region $|l| < 30\deg$, $|b|...
In the theoretical framework of left-right symmetric model, we report on discovery potential for new charged gauge bosons ${(W}_{R}^{+}$ and ${W}_{R}^{\ensuremath{-}})$ as well right-handed Majorana neutrinos ${(N}_{l}'\mathrm{s})$ at future CERN LHC. The $p\stackrel{\ensuremath{\rightarrow}}{p}{W}_{R}\ensuremath{\rightarrow}{\mathrm{lN}}_{l}$ signals have been simulated in ATLAS detector. Discovery contours ${(m}_{{W}_{R}}{,m}_{{N}_{l}})$ plane a study observable polarization effects are presented.
A search for cosmic neutrino sources using the data collected with ANTARES telescope between early 2007 and end of 2015 is performed. For first time, all interactions---charged- neutral-current interactions flavors---are considered in a point-like detector. In previous analyses, only muon charged-current were used. This achieved by novel reconstruction algorithm shower-like events addition to standard track reconstruction. The shower channel contributes about 23% signal an...
We present the results of first combined dark matter search targeting Galactic Centre using ANTARES and IceCube neutrino telescopes. For particles with masses from 50 to 1000 GeV, sensitivities on self-annihilation cross section set by are comparable, making this mass range particularly interesting for a joint analysis. Dark through $\tau^+\tau^-$, $\mu^+\mu^-$, $b\bar{b}$ $W^+W^-$ channels is considered both Navarro-Frenk-White Burkert halo profiles. In combination 2,101.6 days data 1,007...
Abstract Active galaxies, especially blazars, are among the most promising extragalactic candidates for high-energy neutrino sources. To date, ANTARES searches included these objects and used GeV–TeV γ -ray flux to select blazars. Here, a statistically complete blazar sample selected by their bright radio emission is as target of origins neutrinos collected telescope over 13 yr operation. The hypothesis neutrino–blazar directional correlation tested pair counting complementary...
Abstract Position calibration in the deep sea is typically done by means of acoustic multilateration using three or more emitters installed at known positions. Rather than hydrophones as receivers that are exposed to ambient pressure, sound signals can be coupled piezo ceramics glued inside existing containers for electronics measuring instruments a infrastructure. The ANTARES neutrino telescope operated from 2006 until 2022 Mediterranean Sea depth exceeding 2000 m . It comprised nearly 900...
The ANTARES detector is at present the most sensitive neutrino telescope in Northern Hemisphere. highly significant cosmic excess observed by Antarctic IceCube can be studied with ANTARES, exploiting its complementing field of view, exposure, and lower energy threshold. Searches for an all-flavor diffuse signal, covering 9 years data taking, are presented this letter. Upward-going events used to reduce atmospheric muon background. This work includes first time both track-like (mainly...
This study investigated the power of hydroxyapatite adsorbent prepared by a combined precipitation-microwave method, for removing cationic dye methylene blue in aqueous media. The used was characterized X-ray diffraction (XRD) and infrared spectroscopy (IR). adsorption tests were conducted batch mode. effect temperature, pH solution mass on determined. It is found that temperature dependent. kinetic showed second-order model gives better description kinetics reaction than first-order model....
Neutrino detectors participate in the indirect search for fundamental constituents of dark matter (DM) form weakly interacting massive particles (WIMPs). In WIMP scenarios, candidate DM can pair-annihilate into Standard Model products, yielding considerable fluxes high-energy neutrinos. A detector like ANTARES, located Northern Hemisphere, is able to perform a competitive looking towards Galactic Centre, where high density thought accumulate. Both this directional information and spectral...
The flux of very high-energy neutrinos produced in our Galaxy by the interaction accelerated cosmic rays with interstellar medium is not yet determined. characterization this will shed light on Galactic accelerator features, gas distribution morphology and ray transport. central plane can be site an enhanced neutrino production, thus leading to anisotropies extraterrestrial signal as measured IceCube Collaboration. ANTARES telescope, located Mediterranean Sea, offers a favourable view part...
Abstract The results of three different searches for neutrino candidates, associated with the IceCube-170922A event or from direction TXS 0506+056, by ANTARES telescope, are presented. first search refers to online follow-up IceCube alert; second is based on standard time-integrated method employed Collaboration point-like sources; third uses information time-dependent analysis that reported bursting activity centered 2014 December 13, as input an analysis. and yield no events related...
A bstract The ANTARES neutrino telescope has an energy threshold of a few tens GeV. This allows to study the phenomenon atmospheric muon disappearance due oscillations. In similar way, constraints on 3+1 model, which foresees existence one sterile neutrino, can be inferred. Using data collected by from 2007 2016, new measurement Δ m 32 2 and θ 23 been performed — is consistent with world best-fit values model have derived.
Since 2015 the LIGO and Virgo interferometers have detected gravitational waves from almost one hundred coalescences of compact objects (black holes neutron stars). This article presents results a search performed with data ANTARES telescope to identify neutrino counterparts wave sources during third LIGO/Virgo observing run reported in catalogues GWTC-2, GWTC-2.1, GWTC-3. is sensitive all-sky neutrinos all flavours energies $>100$ GeV, thanks inclusion both track-like events (mainly induced...
The existence of diffuse Galactic neutrino production is expected from cosmic ray interactions with gas and radiation fields. Thus, neutrinos are a unique messenger offering the opportunity to test products up energies hundreds TeV. Here we present search for this using ten years ANTARES track shower data, as well seven IceCube data. data combined into joint likelihood emission according KRA$_\gamma$ model assuming 5 PeV per nucleon cutoff. No significant excess found. As consequence, limits...
Addressing the origin of astrophysical neutrino flux observed by IceCube is paramount importance. Gamma-Ray Bursts (GRBs) are among few sources capable achieving required energy to contribute such through p$\gamma$ interactions. In this work, ANTARES data have been used search for upward going muon neutrinos in spatial and temporal coincidence with 784 GRBs occurred from 2007 2017. For each GRB, expected has calculated framework internal shock model impact lack knowledge on majority source...
A search for astrophysical point-like neutrino sources using the data collected by ANTARES detector between January 29, 2007 and December 31, 2017 is presented. likelihood stacking method used to assess significance of an excess muon neutrinos inducing track-like events in correlation with location a list possible sources. Different sets objects are tested analysis: a) sub-sample \textit{Fermi} 3LAC catalog blazars, b) jet-obscured AGN population, c) sample soft gamma-ray selected radio...
Abstract For several decades, the origin of ultra-high-energy cosmic rays (UHECRs) has been an unsolved question high-energy astrophysics. One approach for solving this puzzle is to correlate UHECRs with neutrinos, since neutrinos are a direct probe hadronic interactions and not deflected by magnetic fields. In paper, we present three different approaches correlating arrival directions UHECRs. The neutrino data provided IceCube Neutrino Observatory ANTARES, while UHECR energies above ∼50 EeV...
Abstract High-significance evidences of the existence a high-energy diffuse flux cosmic neutrinos have emerged in last decade from several observations by IceCube Collaboration. The ANTARES neutrino telescope took data for 15 years Mediterranean Sea, 2007 to 2022, and collected high-purity all-flavour sample. search signal using this dataset is presented article. This final analysis did not provide statistically significant observation flux. However, converted into limits on properties...
Kesterite Cu2ZnSnS4 (CZTS) is a very promising absorber material for low cost and high efficiency thin film photovoltaic cells due to its direct band gap absorption coefficient. In this work, CZTS layers were deposited onto Mo-coated glass substrates using single step electrodeposition process. Sulfurization treatment was performed under Argon atmosphere at 500 °C. The effect of the deposition time in range 10 min- 40 min investigated. X-ray diffraction Raman spectroscopy have confirmed...
This work relates to the study and characterization of response function two scintillation detectors with similar size: 2″×2″ NaI(Tl) LaBr3(Ce). The photon detection efficiency energy resolution curve were measured for detector in gamma range from 60 keV 1408 keV. A precise mathematical model scintillators was developed using Monte Carlo simulation code MCNP. Comparison data MCNP simulations showed good agreement enabling validation computational models both LaBr3(Ce) detectors.