A5107220501- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Radio Astronomy Observations and Technology
- Gamma-ray bursts and supernovae
- Particle Detector Development and Performance
- Pulsars and Gravitational Waves Research
- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Nuclear physics research studies
- Particle accelerators and beam dynamics
- Atomic and Subatomic Physics Research
- Catalysis and Hydrodesulfurization Studies
- High-Energy Particle Collisions Research
- Catalysts for Methane Reforming
- Particle Accelerators and Free-Electron Lasers
- Mesoporous Materials and Catalysis
- Analytical chemistry methods development
- Microplastics and Plastic Pollution
- Particle Dynamics in Fluid Flows
- Methane Hydrates and Related Phenomena
- Black Holes and Theoretical Physics
- Cephalopods and Marine Biology
Centre National de la Recherche Scientifique
2016-2025
Aix-Marseille Université
2016-2025
Centre de physique des particules de Marseille
2016-2024
University of Amsterdam
2021-2024
Parc Científic de la Universitat de València
2021-2024
Instituto de Física Corpuscular
2021
Laboratoire AstroParticule et Cosmologie
2021
Friedrich-Alexander-Universität Erlangen-Nürnberg
2021
University of Utah
2021
Université Paris Cité
2021
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...
The next generation of water Cherenkov neutrino telescopes in the Mediterranean Sea are under construction offshore France (KM3NeT/ORCA) and Sicily (KM3NeT/ARCA). KM3NeT/ORCA detector features an energy detection threshold which allows to collect atmospheric neutrinos study flavour oscillation. This paper reports sensitivity this phenomenon. event reconstruction, selection classification described. determine mass ordering was evaluated found be 4.4 $\sigma$ if true is normal 2.3 inverted,...
The detection of cosmic neutrinos with energies above a teraelectronvolt (TeV) offers unique exploration into astrophysical phenomena1–3. Electrically neutral and interacting only by means the weak interaction, are not deflected magnetic fields rarely absorbed interstellar matter: their direction indicates that origin might be from farthest reaches Universe. High-energy can produced when ultra-relativistic cosmic-ray protons or nuclei interact other matter photons, observation could...
KM3NeT will be a network of deep-sea neutrino telescopes in the Mediterranean Sea. The KM3NeT/ARCA detector, to installed at Capo Passero site (Italy), is optimised for detection high-energy neutrinos cosmic origin. Thanks its geographical location on Northern hemisphere, can observe upgoing from most Galactic Plane, including Centre. Given effective area and excellent pointing resolution, measure or significantly constrain flux potential astrophysical sources. At same time, it test...
A search for muon neutrinos originating from dark matter annihilations in the Sun is performed using data recorded by ANTARES neutrino telescope 2007 to 2012. In order obtain best possible sensitivities signals, an optimisation of event selection criteria taking into account background atmospheric muons, and energy spectra expected signals. No significant excess over observed $90\%$ C.L. upper limits on flux, spin--dependent spin--independent WIMP-nucleon cross--sections are derived WIMP...
Abstract The optical module of the KM3NeT neutrino telescope is an innovative multi-faceted large area photodetection module. It contains 31 three-inch photomultiplier tubes in a single 0.44 m diameter pressure-resistant glass sphere. sensory device also comprising calibration instruments and electronics for power, readout data acquisition. capped with breakout-box connection to electro-optical cable power long-distance communication onshore control station. design was qualified first time...
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...
The first prototype of a photo-detection unit the future KM3NeT neutrino telescope has been deployed in deep waters Mediterranean Sea. This digital optical module novel design with very large photocathode area segmented by use 31 three inch photomultiplier tubes. It integrated ANTARES detector for in-situ testing and validation. paper reports on months data taking rate measurements. analysis results highlight capabilities new terms background suppression signal recognition. directionality...
Using data recorded with the ANTARES telescope from 2007 to 2015, a new search for dark matter annihilation in Milky Way has been performed. Three halo models and five channels, $\rm WIMP + \to b \bar b, W^+ W^-, \tau^+ \tau^-, \mu^{+} \mu^{-}$ $\nu \bar{\nu}$, masses ranging 50 $\frac{\text{GeV}}{\text{c}^2}$ 100 $\frac{\text{TeV}}{\text{c}^2}$, were considered. No excess over expected background was found, limits on thermally averaged cross--section set.
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 The KM3NeT/ARCA neutrino detector is currently under construction at 3500 m depth offshore Capo Passero, Sicily, in the Mediterranean Sea. main science objectives are detection of high-energy cosmic neutrinos and discovery their sources. Simulations were conducted for full detector, instrumenting a volume 1 km $$^3$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mn>3</mml:mn> </mml:mmultiscripts> </mml:math> , to estimate sensitivity...
KM3NeT/ARCA is a Cherenkov neutrino telescope under construction in the Mediterranean sea, optimised for detection of astrophysical neutrinos with energies above ∼1 TeV. In this work, using Monte Carlo simulations including all-flavour neutrinos, integrated and differential sensitivities are presented considering case diffuse flux as well extended point-like sources. This analysis applied to Starburst Galaxies demonstrating that detector has capability tracing TeV from these Remarkably,...
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...
A prototype detection unit of the KM3NeT deep-sea neutrino telescope has been installed at 3500m depth 80 km offshore Italian coast. in its final configuration will contain several hundreds units. Each is a mechanical structure anchored to sea floor, held vertical by submerged buoy and supporting optical modules for Cherenkov light emitted charged secondary particles emerging from interactions. This string implements three with 31 photomultiplier tubes each. These were developed...
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...
Abstract The KM3NeT research infrastructure is under construction in the Mediterranean Sea. It consists of two water Cherenkov neutrino detectors, ARCA and ORCA, aimed at astrophysics oscillation research, respectively. Instrumenting a large volume sea with $$\sim {6200}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>∼</mml:mo> <mml:mn>6200</mml:mn> </mml:mrow> </mml:math> optical modules comprising total {200{,}000}$$ <mml:mn>200</mml:mn> <mml:mo>,</mml:mo>...
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...
A highly significant excess of high-energy astrophysical neutrinos has been reported by the IceCube Collaboration. Some features energy and declination distributions events hint at a North/South asymmetry neutrino flux. This could be due to presence bulk our Galaxy in Southern hemisphere. The ANTARES telescope, located Mediterranean Sea, taking data since 2007. It offers best sensitivity muon produced galactic cosmic ray interactions this region sky. In letter search for an extended flux...
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...
The Hamamatsu R12199-02 3-inch photomultiplier tube is the photodetector chosen for first phase of KM3NeT neutrino telescope. About 7000 photomultipliers have been characterised dark count rate, timing spread and spurious pulses. quantum efficiency, gain peak-to-valley ratio also measured a sub-sample in order to determine parameter values needed as input numerical simulations detector.
Abstract The Protvino accelerator facility located in the Moscow region, Russia, is a good position to offer rich experimental research program field of neutrino physics. Of particular interest possibility direct beam from towards KM3NeT/ORCA detector, which currently under construction Mediterranean Sea 40 km offshore Toulon, France. This proposal known as P2O. Thanks its baseline 2595 km, this experiment would yield an unparalleled sensitivity matter effects Earth, allowing for...
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.