A5102919684- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Ecosystem dynamics and resilience
- Nonlinear Dynamics and Pattern Formation
- Ecology and Vegetation Dynamics Studies
- Quantum Chromodynamics and Particle Interactions
- Atomic and Subatomic Physics Research
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Theoretical and Computational Physics
- Atmospheric Ozone and Climate
- Biocrusts and Microbial Ecology
- Land Use and Ecosystem Services
- Plant and animal studies
- Quantum chaos and dynamical systems
- stochastic dynamics and bifurcation
- Earth Systems and Cosmic Evolution
- Spectroscopy and Quantum Chemical Studies
- Nonlinear Photonic Systems
- Animal Ecology and Behavior Studies
- Sustainability and Ecological Systems Analysis
- Solar and Space Plasma Dynamics
Ben-Gurion University of the Negev
2016-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Milano
2015-2024
Agricultural Research Organization
2024
University of Milan
2001-2023
Petersburg Nuclear Physics Institute
2012-2022
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
2010-2022
Istituto Nazionale di Fisica Nucleare, Sezione di Genova
2008-2022
Johannes Gutenberg University Mainz
2021
University of Genoa
2009-2020
Forschungszentrum Jülich
2020
A new model for vegetation patterns is introduced. The reproduces a wide range of observed in water-limited regions, including drifting bands, spots, and labyrinths. It predicts transitions from bare soil at low precipitation to homogeneous high precipitation, through intermediate states spot, stripe, hole patterns. also ranges where different stable coexist. Using these predictions we propose novel explanation desertification phenomena approach classifying aridity.
A direct measurement of the 0.862 MeV 7Be solar neutrino interaction rate performed with Borexino detector at Laboratori Nazionali del Gran Sasso yields 46.0$\pm1.5_{\rm stat}$$^{+1.6}_{-1.5\,\rm syst}$ counts/day/(100 tons). Our result is first a sub-MeV an accuracy better than 5%. The hypothesis no oscillation for neutrinos rejected 4.9$\sigma$ C.L. Using latest Standard Solar Model (SSM) flux predictions, leads directly to precise determination survival probability $\nu_e$'s in vacuum,...
We report the direct measurement of 7Be solar neutrino signal rate performed with Borexino detector at Laboratori Nazionali del Gran Sasso. The interaction 0.862 MeV neutrinos is 49+/-3stat+/-4syst counts/(day.100 ton). hypothesis no oscillation for inconsistent our 4sigma C.L. Our result first survival probability nu(e) in transition region between matter-enhanced and vacuum-driven oscillations. improves experimental determination flux 7Be, pp, CNO nu(e), limit on effective magnetic moment...
We report the measurement of electron neutrino elastic scattering from 8B solar neutrinos with 3 MeV energy threshold by Borexino detector in Gran Sasso (Italy). The rate neutrino-induced events above this is 0.217 +- 0.038 (stat) 0.008 (syst) cpd/100 t, which corresponds to equivalent unoscillated flux (2.4 0.4 0.1 (syst))x10^6 cm^-2 s^-1, good agreement measurements SNO and SuperKamiokaNDE. Assuming predicted high metallicity Standard Solar Model, average survival probability measured be...
The mysterious ‘fairy circles’ are vegetation‐free discs that cover vast areas along the pro‐Namib Desert. Despite 30 yr of research their origin remains unknown. Here we adopt a novel approach focuses on analysis spatial patterns fairy circles obtained from representative 25‐ha aerial images north‐west Namibia. We use point pattern to quantify different features structures and then critically inspect existing hypotheses with respect ability generate observed circle patterns. Our working...
Borexino has been running since May 2007 at the LNGS with primary goal of detecting solar neutrinos. The detector, a large, unsegmented liquid scintillator calorimeter characterized by unprecedented low levels intrinsic radioactivity, is optimized for study lower energy part spectrum. During Phase-I (2007-2010) first detected and then precisely measured flux 7Be neutrinos, ruled out any significant day-night asymmetry their interaction rate, made direct observation pep set tightest upper...
We observed, for the first time, solar neutrinos in 1.0-1.5 MeV energy range. measured rate of pep neutrino interactions Borexino to be [3.1+-0.6(stat)+-0.3(syst)] counts/(day x 100 ton) and provided a constraint on CNO interaction <7.9 (95% C.L.). The absence signal is disfavored at 99.97% C.L., while 98% C.L. This unprecedented sensitivity was achieved by adopting novel data analysis techniques rejection cosmogenic 11C, dominant background 1-2 region. Assuming MSW-LMA solution...
We report the first results of DarkSide-50, a direct search for dark matter operating in underground Laboratori Nazionali del Gran Sasso (LNGS) and searching rare nuclear recoils possibly induced by weakly interacting massive particles (WIMPs). The detector is Liquid Argon Time Projection Chamber with (46.4+-0.7) kg active mass, operated inside 30 t organic liquid scintillator neutron veto, which turn installed at center 1 kt water Cherenkov veto residual flux cosmic rays. here null...
The trade-off between the need to obtain new knowledge and use that improve performance is one of most basic trade-offs in nature, optimal usually requires some balance exploratory exploitative behaviors. Researchers many disciplines have been searching for solution this dilemma. Here we present a novel model which exploration strategy itself dynamic varies with time order optimize definite goal, such as acquisition energy, money, or prestige. Our produced four very distinct phases:...
Significance Pattern-formation theory predicts that vegetation gap patterns, such as the fairy circles of Namibia, emerge through action pattern-forming biomass–water feedbacks and patterns should be found elsewhere in water-limited systems around world. We report here exciting discovery fairy-circle remote outback Australia. Using fieldwork, sensing, spatial pattern analysis, mathematical modeling, pattern-formation we show Australian share with their Namibian counterparts same...
Habitat and species richness in drylands are affected by the dynamics of a few key species, termed ``ecosystem engineers.'' These modulate landscape redistribute water resources so as to allow introduction other species. A mathematical model is developed for pair ecosystem engineers commonly found drylands: plants forming vegetation patterns cyanobacteria soil crusts. The highlights conditions habitat creation high richness, suggests novel mechanism loss events result environmental changes.
Geo-neutrinos, electron anti-neutrinos produced in beta decays of naturally occurring radioactive isotopes the Earth, are a unique direct probe our planet's interior. We report first observation at more than 3$\sigma$ C.L. geo-neutrinos, performed with Borexino detector Laboratori Nazionali del Gran Sasso. Anti-neutrinos detected through neutron inverse decay reaction. With 252.6 ton-yr fiducial exposure after all selection cuts, we 9.9^{+4.1}_{-3.4}(^{+14.6}_{-8.2}) geo-neutrino events,...
Domain patterns in reaction-diffusion systems often contain two spatial scales; a long scale determined by typical domain size, and short pertaining to front structures separating different domains. Such naturally develop bistable excitable systems, but may also appear far beyond Hopf Turing bifurcations. The global behaviour of strongly depends on the fronts' inner structures. In this paper we study symmetry breaking bifurcation expected occur wide class effects it has pattern formation...