F. Sargeni
A5049258671- Particle physics theoretical and experimental studies
- Neural Networks Stability and Synchronization
- Quantum Chromodynamics and Particle Interactions
- Neural Networks and Applications
- Advanced Memory and Neural Computing
- Dark Matter and Cosmic Phenomena
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Computational Physics and Python Applications
- Neutrino Physics Research
- Numerical Methods and Algorithms
- Cryptography and Residue Arithmetic
- Photonic and Optical Devices
- Particle Accelerators and Free-Electron Lasers
- Cellular Automata and Applications
- Atomic and Subatomic Physics Research
- Magnetic Properties and Applications
- Digital Filter Design and Implementation
- Neural dynamics and brain function
- Optical Network Technologies
- Analog and Mixed-Signal Circuit Design
- Radiation Detection and Scintillator Technologies
- Quantum-Dot Cellular Automata
- Cryptographic Implementations and Security
- Advanced Photonic Communication Systems
University of Rome Tor Vergata
2014-2025
Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
2017-2024
Roma Tre University
1991-2024
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2017-2024
Charles University
2023-2024
UCLouvain
2022
Joint Institute for Nuclear Research
2020
University of Pisa
2018
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
2018
Johannes Gutenberg University Mainz
2017
A bstract The NA62 experiment reports the branching ratio measurement $$ \mathrm{BR}\left({K}^{+}\to {\pi}^{+}\nu \overline{\nu}\right)=\left({10.6}_{-3.4}^{+4.0}\left|{}_{\mathrm{stat}}\right.\pm {0.9}_{\mathrm{syst}}\right)\times {10}^{-11} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>BR</mml:mi> <mml:mfenced> <mml:mrow> <mml:msup> <mml:mi>K</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:mo>→</mml:mo> <mml:mi>π</mml:mi> <mml:mi>ν</mml:mi> <mml:mover> <mml:mo>¯</mml:mo>...
A search for heavy neutral lepton production in $K^+$ decays using a data sample collected with minimum bias trigger by the NA62 experiment at CERN 2015 is reported. Upper limits $10^{-7}$ to $10^{-6}$ level are established on elements of extended neutrino mixing matrix $|U_{\ell 4}|^2$ ($\ell=e,\mu$) mass range $170-448~{\rm MeV}/c^2$. This improves results from previous searches decays, setting more stringent and extending range.
A search for heavy neutral lepton (N) production in K+→e+N decays using the data sample collected by NA62 experiment at CERN 2017–2018 is reported. Upper limits of extended neutrino mixing matrix element |Ue4|2 are established level 10−9 over most accessible mass range 144–462 MeV/c2, with assumption that lifetime exceeds 50 ns. These improve significantly upon those previous and decay searches. The favoured Big Bang Nucleosynthesis excluded up to a about 340 MeV/c2.
Single-photon sources are important for integrated photonics and quantum technologies, can be used in key distribution, computing, sensing. Color centers the solid state a promising candidate development of next generation single-photon devices. They point defects crystal lattice that absorb emit light at given wavelengths single photons with high efficiency. The landscape color has changed abruptly recent years, identification wider set emergence new solid-state platforms room-temperature...
Integrated photonics on Silicon-On-Insulator (SOI) substrates is a well developed research field that has already significantly impacted various fields, such as quantum computing, micro sensing devices, biosensing, and high-rate communications. Although quite complex circuits can be made with technology, everything based few ’building blocks’ which are then combined to form more circuits. This review article provides detailed examination of the state art integrated photonic building blocks...
Abstract This research proposes a data processing pipeline employing Fourier analysis and deep neural networks to replicate the phenomenon of magnetic hysteresis, in particular frequency components derived from experimental gathered using newly developed 3D‐printed material. The characterisation hysteresis is essential for enhancing material performance constructing precise models anticipate behaviour under diverse operating circumstances, especially materials where properties can be...
Searches for lepton number violating K+→π−e+e+ and K+→π−π0e+e+ decays have been performed using the complete dataset collected by NA62 experiment at CERN in 2016–2018. Upper limits of 5.3×10−11 8.5×10−10 are obtained on decay branching fractions 90% confidence level. The former result improves a factor four over previous best limit, while latter represents first limit rate.
A bstract The NA62 experiment at CERN, designed to study the ultra-rare decay K + → π $$ \nu \overline{\nu} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>ν</mml:mi> <mml:mover> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> , has also collected data in beam-dump mode. In this configuration, dark photons may be produced by protons dumped on an absorber and reach a volume beginning 80 m downstream. search for decaying flight μ − pairs is reported, based sample of 1 . 4 × 10 17...
Since the 1980s, researchers have taken giant steps in understanding how to use quantum mechanics for solving real problems—for example, making a computer that works according laws of mechanics. In recent decades, tried develop platform information and computation can be integrated into digital telecom technologies without need cryogenic environment. The current status research field photonics will reviewed. A review most common photonic platforms given, together with main achievements...
The development of innovative materials, based on the modern technologies and processes, is key factor to improve energetic sustainability reduce environmental impact electrical equipment. In particular, modeling magnetic hysteresis crucial for design construction electronic devices. recent years, additive manufacturing techniques are playing a decisive role in project production elements circuits applications various engineering fields. To this aim, use deep learning paradigm, integrated...
A major problem in the VLSI implementations of cellular neural networks (CNNs) is that achieving ease programmability templates. The authors present a very efficient implementation digitally programmable transconductance amplifier for network applications with discrete
The implementation of a versatile VLSI chip represents an important step to develop cellular neural networks (CNN). In this paper realization the multi-chip oriented, 6/spl times/6 digitally programmable network (6/spl DPCNN) chip, is presented. This covers most available one-neighbourhood templates for image processing applications. Moreover, it can be easily interconnected others form very large CNN arrays.
A neural network model to predict the dynamic hysteresis loops and energy-loss curves (i.e., energy versus amplitude of magnetic induction) soft ferromagnetic materials at different operating frequencies is proposed herein. Firstly, an innovative Fe-Si alloy, grade 35H270, experimentally characterized via Epstein frame in a wide range frequencies, from 1 Hz up 600 Hz. Parts obtained through experiments are involved training feedforward network, while remaining ones considered validate model....
The NA62 experiment at CERN, designed to study the ultra-rare decay $K^+ \to \pi^+\nu\overline{\nu}$, has also collected data in beam-dump mode. In this configuration, dark photons may be produced by protons dumped on an absorber and reach a volume beginning 80 m downstream. A search for decaying flight $\mu^+\mu^-$ pairs is reported, based sample of $1.4 \times 10^{17}$ dump 2021. No evidence photon signal observed. region parameter space excluded 90% CL, improving previous experimental...
The successful development of cellular neural networks is dependent on hardware implementation. This letter presents a VLSI implementation multichip-oriented, fully programmable, 3/spl times/3 digitally programmable network (DPCNN). chip covers most the available one-neighborhood templates for image processing applications. Moreover, it can be easily interconnected to others carry out very large CNN arrays.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML"...
In this paper a high performance VLSI implementation of 3/spl times/3 Digitally Programmable Cellular Neural Network with discrete templates is presented. This chip, manufactured and successfully tested, gives an efficient solution to the hardware Networks. Moreover chip can be connected others carry out very large CNN arrays. covers 66% available one-neighborhood fixed for image processing applications.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML"...
A computationally efficient hysteresis model, based on a standalone deep neural network, with the capability of reproducing evolution magnetization under arbitrary excitations, is here presented and applied in simulation commercial grain-oriented electrical steel sheet. The main novelty proposed approach to embed past history dependence, typical hysteretic materials, net, illustrate an optimized training procedure. Firstly, experimental investigation was carried out sample GO by means...
Integrated photonic platforms have rapidly emerged as highly promising and extensively investigated systems for advancing classical quantum information technologies, since their ability to seamlessly integrate components within the telecommunication band with existing silicon-based industrial processes offers significant advantages. However, despite this integration facilitating development of novel devices, fostering fast reliable communication protocols manipulation information,...
Abstract The NA62 experiment at CERN utilises a differential Cherenkov counter with achromatic ring focus (CEDAR) for tagging kaons within an unseparated monochromatic beam of charged hadrons. CEDAR-H detector was developed to minimise the amount material in path by using hydrogen gas as radiator medium. shown satisfy kaon requirements test-beam before installation and commissioning experiment. performance measured data collected 2023.
The NA62 experiment at CERN, configured in beam-dump mode, has searched for dark photon decays flight to electron-positron pairs using a sample of 1.4×10^{17} protons on dump collected 2021. No evidence signal is observed. combined result searches lepton-antilepton final states presented and region the parameter space excluded 90% confidence level, improving previous experimental limits mass values between 50 600 MeV/c^{2} coupling range 10^{-6} 4×10^{-5}. An interpretation e^{+}e^{-} search...
The development of innovative materials, based on the modern technologies and processes, is key factor to improve energetic sustainability reduce environmental impact electrical equipment. In particular, modeling magnetic hysteresis crucial for design construction electronic devices. recent years, additive manufacturing techniques are playing a decisive role in project production elements circuits applications various engineering fields. To this aim, use Deep learning paradigm, integrated...
Hardware implementation of programmable neural networks requires multiplications input analogue voltages and constant values. In the Letter a very efficient cellular with digital templates is presented.