P. Fermani
A5114375711- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Radio Astronomy Observations and Technology
- Gamma-ray bursts and supernovae
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Pulsars and Gravitational Waves Research
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Microbial Community Ecology and Physiology
- Particle accelerators and beam dynamics
- Protist diversity and phylogeny
- Underwater Vehicles and Communication Systems
- Soil Moisture and Remote Sensing
- Atomic and Subatomic Physics Research
- Noncommutative and Quantum Gravity Theories
- Nuclear Physics and Applications
- bioluminescence and chemiluminescence research
- Adaptive optics and wavefront sensing
- International Science and Diplomacy
- Computational Physics and Python Applications
- Ocean Waves and Remote Sensing
- Optical Coatings and Gratings
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2014-2023
Sapienza University of Rome
2013-2023
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2016-2022
National Centre for Nuclear Research
2021
École Normale Supérieure de Lyon
2021
Ruhr University Bochum
2021
Centre National de la Recherche Scientifique
2021
Instituto de Física Corpuscular
2021
Universitat de València
2021
Parc Científic de la Universitat de València
2019-2021
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...
In this paper, a time-integrated search for point sources of cosmic neutrinos is presented using the data collected from 2007 to 2010 by ANTARES neutrino telescope. No statistically significant signal has been found and upper limits on flux have obtained. Assuming an E−2ν spectrum, these are at 1–10 ×10−8 GeV cm−2 s−1 declinations ranging −90° 40°. Limits specific models RX J1713.7−3946 Vela X, which include information source morphology also given.
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 high-energy neutrinos coming from the direction of Sun has been performed using data recorded by ANTARES neutrino telescope during 2007 and 2008. The selection criteria have chosen to maximize possible signals produced self-annihilation weakly interacting massive particles accumulated in centre with respect atmospheric background. After unblinding, number observed towards was found be compatible background expectations. $90\%$ CL upper limits terms spin-dependent...
A search for cosmic neutrino sources using six years of data collected by the ANTARES telescope has been performed. Clusters muon neutrinos over expected atmospheric background have looked for. No clear signal found. The most signal-like accumulation events is located at equatorial coordinates R.A. = −468 and decl. −649 corresponds to a 2.2σ fluctuation. In addition, upper limits on flux normalization an E−2 energy spectrum set 50 pre-selected astrophysical objects. Finally, motivated seven...
The ANTARES neutrino telescope, located 40km off the coast of Toulon in Mediterranean Sea at a mooring depth about 2475m, consists twelve detection lines equipped typically with 25 storeys. Every storey carries three optical modules that detect Cherenkov light induced by charged secondary particles (typically muons) coming from interactions. As these are flexible structures fixed to sea bed and held taut buoy, currents cause move storeys rotate. knowledge position precision better than 10cm...
The data taken with the ANTARES neutrino telescope from 2007 to 2010, a total live time of 863 days, are used measure oscillation parameters atmospheric neutrinos. Muon tracks reconstructed energies as low 20 GeV. Neutrino oscillations will cause suppression vertical upgoing muon neutrinos such crossing Earth. determining extracted by fitting event rate function ratio estimated energy and flight path through Measurement contours in two-flavour approximation derived. Assuming maximal mixing,...
The deep ocean is the largest and least known ecosystem on Earth. It hosts numerous pelagic organisms, most of which are able to emit light. Here we present a unique data set consisting 2.5-year long record light emission by deep-sea measured from December 2007 June 2010 at ANTARES underwater neutrino telescope in NW Mediterranean Sea, jointly with synchronous hydrological records. This longest continuous time-series bioluminescence ever recorded. Our reveals several weeks long, seasonal...
A search for muon neutrinos in coincidence with gamma-ray bursts the ANTARES neutrino detector using data from end of 2007 to 2011 is performed. Expected fluxes are calculated each burst individually. The most recent numerical calculations spectra NeuCosmA code employed, which include Monte Carlo simulations full underlying photohadronic interaction processes. discovery probability a selection 296 given period optimised an extended maximum-likelihood strategy. No significant excess over...
A bstract The three precision measurements of the cross section σ ( e + − → π γ(γ)) using initial state radiation by KLOE collaboration provide an important input for prediction hadronic contribution to anomalous magnetic moment muon. These are correlated both statistical and systematic uncertainties and, therefore, simultaneous use these requires covariance matrices that fully describe correlations. We present construction them determine a combined measurement γ(γ)). find, from this...
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...
Results are presented of a search for cosmic sources high energy neutrinos with the ANTARES neutrino telescope. The data were collected during 2007 and 2008 using detector configurations containing between 5 12 detection lines. integrated live time analyzed is 304 days. Muon tracks reconstructed likelihood-based algorithm. Studies timing indicate median angular resolution 0.5 +/- 0.1 degrees. flux sensitivity 7.5 x 10-8 ~ (E/GeV)^-2 GeV^-1 s^-1 cm^-2 part sky that always visible (declination...
We present the results of searches for point-like sources neutrinos based on first combined analysis data from both ANTARES and IceCube neutrino telescopes. The combination detectors which differ in size location forms a window Southern sky where sensitivity to point improves by up factor two compared individual analyses. Using recorded 2007 2012, 2008 2011, we search emission across pre-selected list candidate objects. No significant excess over background has been found these searches,...
Atmospheric neutrinos are produced during cascades initiated by the interaction of primary cosmic rays with air nuclei. In this paper, a measurement atmospheric \nu_\mu + \bar{\nu}_\mu energy spectrum in range 0.1 - 200 TeV is presented, using data collected ANTARES underwater neutrino telescope from 2008 to 2011. Overall, measured flux ~25% higher than predicted conventional flux, and compatible measurements reported ice. The single power-law dependence spectral index \gamma_{meas}=3.58\pm...
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...
The gSeaGen code is a GENIE-based application developed to efficiently generate high statistics samples of events, induced by neutrino interactions, detectable in telescope. able events all flavours, considering topological differences between track-type and shower-like events. Neutrino interactions are simulated taking into account the density composition media surrounding detector. main features presented together with some examples its within KM3NeT project. Program Title: CPC Library...
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...
We searched for the $μ^+μ^-$ decay of a light vector gauge boson, also known as dark photon, in $e^+ e^- \to μ^+ μ^- γ_{\rm ISR}$ process by means Initial State Radiation (ISR) method. used 1.93~fb$^{-1}$ data collected KLOE experiment at DA$Φ$NE $ϕ$-factory. No structures have been observed over irreducible $μ^+ μ^-$ background. A 90\% CL limit on ratio $\varepsilon^2=α^{\prime}/α$ between coupling constant and fine structure $ 3\times 10^{-6}-2\times 10^{-7}$ has set photon mass region 519...
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.
We present the results of first search for gravitational wave bursts associated with high energy neutrinos. Together, these messengers could reveal new, hidden sources that are not observed by conventional photon astronomy, particularly at energy. Our uses neutrinos detected underwater neutrino telescope ANTARES in its 5 line configuration during period January - September 2007, which coincided fifth and science runs LIGO Virgo, respectively. The LIGO-Virgo data were analysed candidate...
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...
A search for high-energy neutrinos coming from the direction of Galactic Centre is performed using data recorded by ANTARES neutrino telescope 2007 to 2012. The event selection criteria are chosen maximise sensitivity possible signals produced self-annihilation weakly interacting massive particles accumulated around centre Milky Way with respect atmospheric background. After unblinding, number observed in line sight found be compatible background expectations. 90% C.L. upper limits terms...