A5102751871- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Atmospheric Ozone and Climate
- Radiation Detection and Scintillator Technologies
- Radioactive Decay and Measurement Techniques
- Radioactivity and Radon Measurements
- Solar and Space Plasma Dynamics
- Nuclear Physics and Applications
- High-Energy Particle Collisions Research
- Quantum, superfluid, helium dynamics
- Cosmology and Gravitation Theories
- Molecular Spectroscopy and Structure
- Astro and Planetary Science
- Radioactive contamination and transfer
- Superconducting Materials and Applications
- Radiation Effects in Electronics
- Advanced Chemical Physics Studies
- Molecular Biology Techniques and Applications
- Catalysis and Oxidation Reactions
- Radiation Therapy and Dosimetry
- Reinforcement Learning in Robotics
Universität Hamburg
2016-2025
Université Libre de Bruxelles
2024
China Institute of Atomic Energy
2024
Universidade Estadual de Londrina
2024
China Academy of Space Technology
2024
Pontifical Catholic University of Rio de Janeiro
2024
A. Alikhanyan National Laboratory
2024
Beijing Normal University
2024
Forschungszentrum Jülich
2020
RWTH Aachen University
2020
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,...
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...
The OPERA neutrino oscillation experiment has been designed to prove the appearance of ντ in a nearly pure νμbeam (CNGS) produced at CERN and detected underground Hall C Gran Sasso Laboratory, 730 km away from source. In OPERA, τ leptons resulting interaction ντare target units called bricks made nuclear emulsion films interleaved with lead plates. contains 150000 such bricks, for total mass 1.25 kton, arranged into walls plastic scintillator strips. detector is split two identical...
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...
The Jiangmen Underground Neutrino Observatory (JUNO) is proposed to determine the neutrino mass hierarchy using an underground liquid scintillator detector. It located 53 km away from both Yangjiang and Taishan Nuclear Power Plants in Guangdong, China. experimental hall, spanning more than 50 meters, under a granite mountain of over 700 m overburden. Within six years running, detection reactor antineutrinos can resolve at confidence level 3-4$\sigma$, oscillation parameters...
The OPERA neutrino detector in the underground Gran Sasso Laboratory (LNGS) has been designed to perform first detection of oscillations direct appearance mode through study $\nu_\mu\rightarrow\nu_\tau$ channel. hybrid apparatus consists an emulsion/lead target complemented by electronic detectors and it is placed high energy long-baseline CERN LNGS beam (CNGS) 730 km away from source. Runs with CNGS neutrinos were successfully carried out 2008 2009. After a brief description beam,...
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,...
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...
A bstract Heavy Neutral Leptons (HNLs) are hypothetical particles predicted by many extensions of the Standard Model. These can, among other things, explain origin neutrino masses, generate observed matter-antimatter asymmetry in Universe and provide a dark matter candidate. The SHiP experiment will be able to search for HNLs produced decays heavy mesons travelling distances ranging between $$ \mathcal{O} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>O</mml:mi>...
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...
Borexino, a liquid scintillator detector at LNGS, is designed for the detection of neutrinos and antineutrinos from Sun, supernovae, nuclear reactors, Earth. The feeble nature these signals requires strong suppression backgrounds below few MeV. Very low intrinsic radiogenic contamination all components needs to be accompanied by efficient identification muons muon-induced backgrounds. Muons produce unstable nuclei spallation processes along their trajectory through whose decays can mimic...
We have measured the muon flux at underground Gran Sasso National Laboratory (3800 m w.e.) to be (3.41 \pm 0.01) \times 10-4m-2s-1 using four years of Borexino data. A modulation this signal is observed with a period (366\pm3) days and relative amplitude (1.29 0.07)%. The phase (179 6) days, corresponding maximum on 28th June. Using most complete atmospheric data models available, rate fluctuations are shown positively correlated temperature, an effective coefficient {\alpha}T = 0.93 0.04....
A search for 5.5-MeV solar axions produced in the $p+d\rightarrow\rm{^3He}+A (5.5 \rm{MeV})$ reaction was performed using Borexino detector. The Compton conversion of to photons, ${\rm A}+e\rightarrow e+\gamma$; axio-electric effect, A}+e+Z\rightarrow e+Z$; decay into two A}\rightarrow2\gamma$; and inverse Primakoff on nuclei, A}+Z\rightarrow\gamma+Z$, are considered. Model independent limits axion-electron ($g_{Ae}$), axion-photon ($g_{A\gamma}$), isovector axion-nucleon ($g_{3AN}$)...
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...
This paper presents a fast approach to simulating muons produced in interactions of the SPS proton beams with target SHiP experiment. The experiment will be able search for new long-lived particles 400 GeV/c beam dump and which travel distances between fifty metres tens kilometers. detector needs operate under ultra-low background conditions requires large simulated samples muon induced processes. Through use Generative Adversarial Networks it is possible emulate simulation interaction...
The Search for Hidden Particles (SHiP) Collaboration has shown that the CERN SPS accelerator with its 400 GeV/c proton beam offers a unique opportunity to explore Sector [1–3]. proposed experiment is an intensity frontier which capable of searching hidden particles through both visible decays and scattering signatures from recoil electrons or nuclei. high-intensity experimental facility developed by SHiP based on number key features developments provide possibility probing large part...
We report on an improved measurement of the $^{8}\mathrm{B}$ solar neutrino interaction rate with Borexino experiment at Laboratori Nazionali del Gran Sasso. Neutrinos are detected via their elastic scattering electrons in a large volume liquid scintillator. The measured scattered above 3 MeV energy is ${0.223}_{\ensuremath{-}0.016}^{+0.015}(\mathrm{stat}){\text{ }}_{\ensuremath{-}0.006}^{+0.006}(\mathrm{syst})\text{ }\text{ }\mathrm{cpd}/100\text{ }\mathrm{t}$, which corresponds to observed...
Abstract The Search for Hidden Particles (SHiP) Collaboration has proposed a general-purpose experimental facility operating in beam-dump mode at the CERN SPS accelerator to search light, feebly interacting particles. In baseline configuration, SHiP experiment incorporates two complementary detectors. upstream detector is designed recoil signatures of light dark matter (LDM) scattering and neutrino physics, particular with tau neutrinos. It consists spectrometer magnet housing layered system...
Abstract The core-collapse supernova (CCSN) is considered one of the most energetic astrophysical events in universe. early and prompt detection neutrinos before (pre-SN) during (SN) burst presents a unique opportunity for multi-messenger observations CCSN events. In this study, we describe monitoring concept present sensitivity system to pre-SN SN at Jiangmen Underground Neutrino Observatory (JUNO), 20 kton liquid scintillator detector currently under construction South China. real-time...
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...