A5034938264- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Atmospheric Ozone and Climate
- Cosmology and Gravitation Theories
- Force Microscopy Techniques and Applications
- Solar and Space Plasma Dynamics
- Mechanical and Optical Resonators
- Physics of Superconductivity and Magnetism
- Astronomy and Astrophysical Research
- Scientific Research and Discoveries
- Magnetic properties of thin films
- COVID-19 epidemiological studies
- Quantum, superfluid, helium dynamics
- Advanced MEMS and NEMS Technologies
- Galaxies: Formation, Evolution, Phenomena
- Astro and Planetary Science
- Nuclear Physics and Applications
- Finance, Taxation, and Governance
- Quantum and electron transport phenomena
- Radioactive contamination and transfer
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
2015-2024
Polytechnic Institute of Porto
2024
Rede de Química e Tecnologia
2024
University of Amsterdam
2024
Istituto Nazionale di Fisica Nucleare
2009-2023
Université Paris Cité
2013-2022
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2013-2022
Centre National de la Recherche Scientifique
2013-2022
Istituto Nazionale di Fisica Nucleare, Sezione di Genova
2022
University of Basel
2016-2022
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...
A search for the solar neutrino effective magnetic moment has been performed using data from 1291.5 days exposure during second phase of Borexino experiment. No significant deviations expected shape electron recoil spectrum neutrinos have found, and a new upper limit on $\mu_{\nu}^{eff}$ $<$ 2.8$\cdot$10$^{-11}$ $\mu_{B}$ at 90\% c.l. set constraints sum fluxes implied by radiochemical gallium experiments.Using moment, limits moments flavor states, elements matrix Dirac Majorana neutrinos,...
We present the simultaneous measurement of interaction rates ${R}_{pp}$, ${R}_{\mathrm{Be}}$, ${R}_{pep}$ $pp$, $^{7}\mathrm{Be}$, and $pep$ solar neutrinos performed with a global fit to Borexino data in an extended energy range (0.19--2.93) MeV particular attention details analysis methods. This result was obtained by analyzing 1291.51 days Phase-II data, collected after extensive scintillator purification campaign. Using counts per day $(\mathrm{cpd})/100\text{ }\mathrm{ton}$ as unit, we...
A bstract The very low radioactive background of the Borexino detector, its large size, and well proved capability to detect both energy electron neutrinos antineutrinos make an ideal case for study short distance neutrino oscillations with artificial sources at Gran Sasso. This paper describes possible layouts 51 Cr ( ν e ) 144 Ce- Pr $$ \left( {{{\overline{\nu}}_e}} \right) source experiments in shows expected sensitivity eV mass sterile three different phases experiment. Expected results...
We present a measurement of the geo--neutrino signal obtained from 1353 days data with Borexino detector at Laboratori Nazionali del Gran Sasso in Italy. With fiducial exposure (3.69 $\pm$ 0.16) $\times$ $10^{31}$ proton year after all selection cuts and background subtraction, we detected (14.3 4.4) geo-neutrino events assuming fixed chondritic mass Th/U ratio 3.9. This corresponds to $S_{geo}$ = (38.8 12.0) TNU just 6 $10^{-6}$ probability for null measurement. U Th left as free parameters...
We report an improved geo-neutrino measurement with Borexino from 2056 days of data taking. The present exposure is $(5.5\pm0.3)\times10^{31}$ proton$\times$yr. Assuming a chondritic Th/U mass ratio 3.9, we obtain $23.7 ^{+6.5}_{-5.7} (stat) ^{+0.9}_{-0.6} (sys)$ events. null observation geo-neutrinos alone has probability $3.6 \times 10^{-9}$ (5.9$\sigma$). A signal the mantle obtained at 98\% C.L. radiogenic heat production for U and Th best-fit result restricted to range 23-36 TW, taking...
The violation of Baryon Number, $\mathcal{B}$, is an essential ingredient for the preferential creation matter over antimatter needed to account observed baryon asymmetry in universe. However, such a process has yet be experimentally observed. HIBEAM/NNBAR %experiment program proposed two-stage experiment at European Spallation Source (ESS) search number violation. will include high-sensitivity searches processes that violate by one or two units: free neutron-antineutron oscillation...
We present an improved measurement of the carbon-nitrogen-oxygen (CNO) solar neutrino interaction rate at Earth obtained with complete Borexino Phase-III dataset. The measured rate, R_{CNO}=6.7_{-0.8}^{+2.0} counts/(day×100 tonnes), allows us to exclude absence CNO signal about 7σ C.L. correspondent flux is 6.6_{-0.9}^{+2.0}×10^{8} cm^{-2} s^{-1}, taking into account flavor conversion. use new evaluate C and N abundances in Sun respect H abundance for first time neutrinos. Our result...
Shrimp processing generates substantial waste, which is rich in valuable components such as polysaccharides, proteins, carotenoids, and fatty acids. This review provides a comprehensive overview of the valorization shrimp mainly shells, focusing on extraction methods, bioactivities, potential applications these bioactive compounds. Various techniques, including chemical extraction, microbial fermentation, enzyme-assisted microwave-assisted ultrasound-assisted pressurized techniques are...
We propose to achieve the proof-of-principle of PTOLEMY project directly detect Cosmic Neutrino Background (CNB). Each technological challenges described in [1,2] will be targeted and hopefully solved by use latest experimental developments profiting from low background environment provided LNGS underground site. The first phase focus on graphene technology for a tritium target demonstration TES microcalorimetry with an energy resolution better than 0.05 eV electrons. These technologies...
This paper presents a comprehensive geoneutrino measurement using the Borexino detector, located at Laboratori Nazionali del Gran Sasso (LNGS) in Italy. The analysis is result of 3262.74 days data between December 2007 and April 2019. describes improved techniques optimized selection, which includes enlarged fiducial volume sophisticated cosmogenic veto. reported exposure (1.29±0.05)×1032 protons ×year represents an increase by factor two over previous 2015. By observing...
The PTOLEMY project aims to develop a scalable design for Cosmic Neutrino Background (CNB) detector, the first of its kind and only one conceived that can look directly at image Universe encoded in neutrino background produced second after Big Bang. scope work next three years is complete conceptual this detector validate with direct measurements non-neutrino backgrounds are below expected cosmological signal. In paper we discuss details theoretical aspects experiment physics goals....
We discuss the consequences of quantum uncertainty on spectrum electron emitted by $\ensuremath{\beta}$-processes a tritium atom bound to graphene sheet. analyze quantitatively issue recently raised Cheipesh, Cheianov, and Boyarsky [Phys. Rev. D 104, 116004 (2021)], relevant timescales degrees freedom that can contribute intrinsic spread in energy. perform careful calculations potential between with different coverages geometries. With this at hand, we propose possible avenues mitigate...
We report the first measurement of CNO solar neutrinos by Borexino that uses Correlated Integrated Directionality (CID) method, exploiting sub-dominant Cherenkov light in liquid scintillator detector. The directional information origin is preserved fast photons from neutrino scattered electrons, and used to discriminate between signal background. independent spectral on which previous measurements were based. While analysis could only be applied Phase-III dataset, can use complete data...
The solar neutrino experiment Borexino, which is located in the Gran Sasso underground laboratories, a unique position to study muon-induced backgrounds an organic liquid scintillator. In this study, large sample of cosmic muons identified and tracked by muon veto detector external scintillator, specific light patterns observed when cross scintillator volume. yield neutrons found be Yn = (3.10±0.11)·10−4 n/(μ·(g/cm2)). distance profile between parent track neutron capture point has average...
Precision measurements of solar neutrinos emitted by specific nuclear reaction chains in the Sun are great interest for developing an improved understanding star formation and evolution. Given expected neutrino fluxes known detection reactions, such require detectors capable collecting neutrino-electron scattering data exposures on order 1 ktonne yr, with good energy resolution extremely low background. Two-phase liquid argon time projection chambers (LAr TPCs) under development direct Dark...
Borexino is a liquid scintillation detector located deep underground at the Laboratori Nazionali del Gran Sasso (LNGS, Italy). Thanks to unmatched radio-purity of scintillator, and well understood response low energy, new limit on stability electron for decay into neutrino single mono-energetic photon was obtained. This bound, tau > 6.6 10**28 yr 90 % C.L., two orders magnitude better than previous limit.
SABRE aims to directly measure the annual modulation of dark matter interaction rate with NaI(Tl) crystals. A compatible standard hypothesis in which our Galaxy is embedded a halo has been measured by DAMA experiment same target material. Other direct detection experiments, using different materials, seem exclude interpretation such simplest scenario WIMP-nucleon elastic scattering. The carry out an independent search sufficient sensitivity confirm or refute claim. concept and goal obtain...