N. Di Marco
A5102024749- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Nuclear physics research studies
- Superconducting and THz Device Technology
- High-Energy Particle Collisions Research
- Muon and positron interactions and applications
- Quantum Chromodynamics and Particle Interactions
- Advanced Semiconductor Detectors and Materials
- Cosmology and Gravitation Theories
- CCD and CMOS Imaging Sensors
- Superconducting Materials and Applications
- Radiation Therapy and Dosimetry
- Advanced Frequency and Time Standards
- Particle Accelerators and Free-Electron Lasers
- Luminescence Properties of Advanced Materials
- Radiation Effects in Electronics
- Knowledge Societies in the 21st Century
- Advanced NMR Techniques and Applications
- Radio Astronomy Observations and Technology
- Accounting and Financial Management
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
2015-2024
Gran Sasso Science Institute
2017-2024
TU Wien
2023
Institute of High Energy Physics
2023
Instituto de Física Corpuscular
2022
Universitat de València
2022
Istituto Nazionale di Fisica Nucleare
2017-2020
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
2019
Institute for Physics
2019
National Agency for New Technologies, Energy and Sustainable Economic Development
2018
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...
A new general purpose fixed target facility is proposed at the CERN SPS accelerator which aimed exploring domain of hidden particles and make measurements with tau neutrinos. Hidden are predicted by a large number models beyond Standard Model. The high intensity 400~GeV beam allows probing wide variety containing light long-lived exotic masses below ${\cal O}$(10)~GeV/c$^2$, including very weakly interacting low-energy SUSY states. experimental programme capable being extended in future,...
The GERmanium Detector Array (GERDA) experiment searched for the lepton-number-violating neutrinoless double-$\beta$ ($0\nu\beta\beta$) decay of $^{76}$Ge, whose discovery would have far-reaching implications in cosmology and particle physics. By operating bare germanium diodes, enriched an active liquid argon shield, GERDA achieved unprecedently low background index $5.2\times10^{-4}$ counts/(keV$\cdot$kg$\cdot$yr) signal region met design goal to collect exposure 100 kg$\cdot$yr a...
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 GERDA experiment searches for the lepton-number-violating neutrinoless double-β decay of ^{76}Ge (^{76}Ge→^{76}Se+2e^{-}) operating bare Ge diodes with an enriched fraction in liquid argon. exposure broad-energy germanium type (BEGe) detectors is increased threefold respect to our previous data release. BEGe feature excellent background suppression from analysis time profile detector signals. In window a level 1.0_{-0.4}^{+0.6}×10^{-3} counts/(keV kg yr) has been achieved; if normalized...
The observation of neutrinoless double-beta decay (0${\nu}{\beta}{\beta}$) would show that lepton number is violated, reveal neutrinos are Majorana particles, and provide information on neutrino mass. A discovery-capable experiment covering the inverted ordering region, with effective masses 15 - 50 meV, will require a tonne-scale excellent energy resolution extremely low backgrounds, at level $\sim$0.1 count /(FWHM$\cdot$t$\cdot$yr) in region signal. current generation $^{76}$Ge experiments...
This paper introduces the neutrinoless double-beta decay (the rarest nuclear weak process) and describes status of research for this transition, both from point view theoretical physics in terms present future experimental scenarios. Implications phenomenon on crucial aspects particle are briefly discussed. The calculations matrix elements case mass mechanisms reviewed, a range these quantities is proposed most appealing candidates. After introducing general concepts—such as choice best...
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...
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>...
A discovery that neutrinos are not the usual Dirac but Majorana fermions, i.e. identical to their antiparticles, would be a manifestation of new physics with profound implications for particle and cosmology. generate neutrinoless double-$\beta$ ($0\nu\beta\beta$) decay, matter-creating process without balancing emission antimatter. So far, 0$\nu\beta\beta$ decay has eluded detection. The GERDA collaboration searches $0\nu\beta\beta$ $^{76}$Ge by operating bare germanium detectors in an...
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...
Sodium iodide (NaI)-based cryogenic scintillating calorimeters using quantum sensors for signal readout have shown promising first results toward a model-independent test of the annually modulating detected by DAMA/LIBRA dark matter experiment. The COSINUS Collaboration has previously reported on above-ground measurements dual-channel phonons and light based transition edge (TESs) that allows particle discrimination an event-by-event basis. In this article, we outline underground measurement...
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 GERDA collaboration is performing a sensitive search for neutrinoless double beta decay of $^{76}$Ge at the INFN Laboratori Nazionali del Gran Sasso, Italy. upgrade experiment from Phase I to II has been concluded in December 2015. first data release shows that goal suppress background by one order magnitude compared achieved. thus will remain background-free up its design exposure (100 kg yr). It reach thereby half-life sensitivity more than 10$^{26}$ yr within 3 years collection. This...
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 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 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...
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.
We propose the construction of LEGEND-1000, ton-scale Large Enriched Germanium Experiment for Neutrinoless $\beta \beta$ Decay. This international experiment is designed to answer one highest priority questions in fundamental physics. It consists 1000 kg Ge detectors enriched more than 90% $^{76}$Ge isotope operated a liquid argon active shield at deep underground laboratory. By combining lowest background levels with best energy resolution field, LEGEND-1000 will perform...
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,...