A5079038131- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- High-Energy Particle Collisions Research
- Astrophysics and Cosmic Phenomena
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Synthesis and biological activity
- Particle Accelerators and Free-Electron Lasers
- Synthesis and Characterization of Heterocyclic Compounds
- Particle accelerators and beam dynamics
- Nuclear physics research studies
- Synthesis and Reactions of Organic Compounds
- Tuberculosis Research and Epidemiology
- Nuclear reactor physics and engineering
- Superconducting Materials and Applications
- Synthesis and Biological Evaluation
- Synthesis of heterocyclic compounds
- Atomic and Subatomic Physics Research
- Scientific Research and Discoveries
- Chemical and Physical Properties of Materials
- Radiation Detection and Scintillator Technologies
- Muon and positron interactions and applications
- Click Chemistry and Applications
- Nuclear Physics and Applications
University of Salerno
2013-2023
National Centre for Nuclear Research
2021
Institute for Physics
2019
Istituto Nazionale di Fisica Nucleare
2019
Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Salerno
2012-2017
University of Naples Federico II
2014-2016
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2015
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud
2014
University of Sassari
1988-2009
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
1998-2006
A bstract The OPERA neutrino experiment at the underground Gran Sasso Laboratory has measured velocity of neutrinos from CERN CNGS beam over a baseline about 730 km. measurement is based on data taken by in years 2009, 2010 and 2011. Dedicated upgrades timing system detector, as well high precision geodesy campaign for baseline, allowed reaching comparable systematic statistical accuracies. An arrival time muon with respect to one computed assuming speed light vacuum $ \left( {6.5\pm...
A bstract The OPERA neutrino experiment is designed to perform the first observation of oscillations in direct appearance mode ν μ → τ channel, via detection -leptons created charged current interactions. detector, located underground Gran Sasso Laboratory, consists an emulsion/lead target with average mass about 1.2 kt, complemented by electronic detectors. It exposed CERN Neutrinos beam, a baseline 730 km and mean energy 17 GeV. candidate event analysis 2008-2009 sample have been reported...
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...
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,...
The OPERA experiment was designed to search for $\nu_{\mu} \rightarrow \nu_{\tau}$ oscillations in appearance mode, i.e. by detecting the $\tau$-leptons produced charged current $\nu_{\tau}$ interactions. took data from 2008 2012 CERN Neutrinos Gran Sasso beam. observation of appearance, achieved with four candidate events a sub-sample data, previously reported. In this paper, fifth event, found an enlarged sample, is described. Together further reduction expected background, detected so far...
The OPERA experiment was designed to study ν_{μ}→ν_{τ} oscillations in the appearance mode CERN Gran Sasso Neutrino beam (CNGS). In this Letter, we report final analysis of full data sample collected between 2008 and 2012, corresponding 17.97×10^{19} protons on target. Selection criteria looser than previous analyses have produced ten ν_{τ} candidate events, thus reducing statistical uncertainty measurement oscillation parameters properties. A multivariate approach for event identification...
Results are presented on hyperon and antihyperon production in Pb–Pb, pPb pBe collisions at 158 GeV/c per nucleon. Λ, Ξ Ω yields have been measured central rapidity medium transverse momentum as functions of the centrality collision. Comparing Pb–Pb to those interactions, strangeness enhancement is observed. The increases with content hyperons, reaching a factor about 20 for collisions.
The OPERA experiment is designed to search for ${\ensuremath{\nu}}_{\ensuremath{\mu}}\ensuremath{\rightarrow}{\ensuremath{\nu}}_{\ensuremath{\tau}}$ oscillations in appearance mode, i.e., through the direct observation of $\ensuremath{\tau}$ lepton ${\ensuremath{\nu}}_{\ensuremath{\tau}}$-charged current interactions. has taken data five years, since 2008, with CERN Neutrino Gran Sasso beam. Previously, two ${\ensuremath{\nu}}_{\ensuremath{\tau}}$ candidates a decaying into hadrons were...
A new method of momentum measurement charged particles through multiple Coulomb scattering (MCS) in the OPERA lead-emulsion target is presented. It based on precise measurements track angular deviations carried out thanks to very high resolution nuclear emulsions. The algorithm has been tested with Monte Carlo pions. results are found describe within expected uncertainties data obtained from test beams. We also present a comparison muon momenta evaluated MCS those determined by electronic...
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...
The OPERA neutrino detector at the underground Gran Sasso Laboratory (LNGS) was designed to perform first detection of oscillations in appearance mode, through study νμ → ντ oscillations. apparatus consists a lead/emulsion-film target complemented by electronic detectors. It is placed high-energy, long-baseline CERN LNGS beam (CNGS) 730 km away from source. In August 2006, run with CNGS neutrinos successfully conducted. A sample events collected, statistically consistent integrated...
A bstract first result of the search for ν μ → e oscillations in OPERA experiment, located at Gran Sasso Underground Laboratory, is presented. The experiment looked appearance CNGS neutrino beam using data collected 2008 and 2009. Data are compatible with non-oscillation hypothesis three-flavour mixing model. further analysis same constrains non-standard oscillation parameters θ new $ \varDelta m_{\mathrm{new}}^2 suggested by LSND MiniBooNE experiments. For large values ( > 0.1 eV 2 ),...
The OPERA experiment is searching for nu_mu -> nu_tau oscillations in appearance mode i.e. via the direct detection of tau leptons charged current interactions. evidence has been previously reported with three candidate events using a sub-sample data from 2008-2012 runs. We report here fourth event, decaying into hadron, found after adding 2012 run without any muon final state to sample. Given number analysed and low background, are established significance 4.2sigma.
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...
A measurement of strange baryon and antibaryon production in Pb-Pb collisions has been carried out by the NA57 experiment at CERN SPS, with 40 158 GeV/c beam momentum. Results on $Λ$, $Ξ$ $Ω$ hyperon yields mid-rapidity most central 53% are presented compared those obtained higher energy, same collision centrality range. The $Λ$ $Ξ^-$ per unit rapidity stay roughly constant while $Ω^-$, $\barΛ$, $\barΞ^+$ $\barΩ^+$ increase when going to SPS energy. Hyperon from STAR $\sqrt{s_{NN}}$ = 130...
The OPERA experiment, designed to conclusively prove the existence of νμ→ντ oscillations in atmospheric sector, makes use a massive lead-nuclear emulsion target observe appearance ντ's CNGS νμ beam. location and analysis neutrino interactions quasi real-time required development fast computer-controlled microscopes able reconstruct particle tracks with sub-micron precision high efficiency at speed ∼20 cm2/h. This paper describes performance track reconstruction theEuropean Scanning System,...
The OPERA experiment is based on a hybrid technology combining electronic detectors and nuclear emulsions. collected muon-neutrino interactions during the 2008 2009 physics runs of CNGS neutrino beam, produced at CERN with an energy range about 5-35 GeV. A total $5.3 \times 10^{19}$ protons target equivalent luminosity has been analysed detectors: scintillator strips trackers magnetic muon spectrometers equipped resistive plate gas chambers drift tubes, allowing detailed reconstruction...
The OPERA neutrino detector in the underground Gran Sasso Laboratory (LNGS) was designed to perform first detection of oscillations appearance mode through study νμ → ντ oscillations. 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 2007 2008 fully operational its related facilities for emulsion handling analysis....
The nuclear emulsion target of the CHORUS detector was exposed to wide-band neutrino beam CERN SPS 27 GeV average energy from 1994 1997. In total, about 100 000 charged-current (CC) interactions with at least one identified muon were located in and fully reconstructed, using newly developed automated scanning systems. Charmed particles searched for by a program recognizing particle decays. observation decay makes it possible select sample very low background minimal kinematical bias. all,...
A bstract In spring 2012 CERN provided two weeks of a short bunch proton beam dedicated to the neutrino velocity measurement over distance 730 km. The OPERA experiment at underground Gran Sasso Laboratory used an upgraded setup compared 2011 measurements, improving time accuracy. An independent timing system based on Resistive Plate Chambers was exploited providing accuracy ~1 ns. Neutrino and anti-neutrino contributions were separated using information by magnetic spectrometers. new...