A5031838241- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Particle Detector Development and Performance
- Computational Physics and Python Applications
- Black Holes and Theoretical Physics
- Superconducting Materials and Applications
- Magnetic confinement fusion research
- Atomic and Subatomic Physics Research
- Laser-Plasma Interactions and Diagnostics
- Fusion materials and technologies
- Ionosphere and magnetosphere dynamics
- Particle Accelerators and Free-Electron Lasers
- Cosmology and Gravitation Theories
- Radiation Detection and Scintillator Technologies
- Quantum and electron transport phenomena
- Nuclear physics research studies
- Physics of Superconductivity and Magnetism
- Advanced NMR Techniques and Applications
- NMR spectroscopy and applications
- Dust and Plasma Wave Phenomena
- Spacecraft and Cryogenic Technologies
- Viral Infections and Vectors
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2023
Roma Tre University
2018-2023
National Agency for New Technologies, Energy and Sustainable Economic Development
2021-2023
Istituto Nazionale di Fisica Nucleare, Sezione di Catania
2018-2023
Istituto Nazionale di Fisica Nucleare
2023
University of Milan
2023
Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre
2018-2022
Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
2020
Sapienza University of Rome
2020
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2020
A bstract The three precision measurements of the cross section σ ( e + − → π γ(γ)) using initial state radiation by KLOE collaboration provide an important input for prediction hadronic contribution to anomalous magnetic moment muon. These are correlated both statistical and systematic uncertainties and, therefore, simultaneous use these requires covariance matrices that fully describe correlations. We present construction them determine a combined measurement γ(γ)). find, from this...
In the frame of EU Next Generation Europe program, Italian Minister University and Research has approved IRIS project (Innovative Infrastructure for applied Superconductivity). will be active in six poles. The poles are spread all over Italy: Milano, hub infrastructure; Genova, Frascati, Napoli, Salerno, Lecce. scope is to provide an infrastructure accompany development superconductivity basic research like accelerators. It also aims at developing societal applications superconductivity,...
We searched for the $μ^+μ^-$ decay of a light vector gauge boson, also known as dark photon, in $e^+ e^- \to μ^+ μ^- γ_{\rm ISR}$ process by means Initial State Radiation (ISR) method. used 1.93~fb$^{-1}$ data collected KLOE experiment at DA$Φ$NE $ϕ$-factory. No structures have been observed over irreducible $μ^+ μ^-$ background. A 90\% CL limit on ratio $\varepsilon^2=α^{\prime}/α$ between coupling constant and fine structure $ 3\times 10^{-6}-2\times 10^{-7}$ has set photon mass region 519...
We have measured the running of effective QED coupling constant $\alpha(s)$ in time-like region $0.6<\sqrt s< 0.975$ GeV with KLOE detector at DA$\Phi$NE using Initial State Radiation process $e^+e^-\to\mu^+ \mu^-\gamma$. It represents first measurement this energy region. Our results show a more than 5$\sigma$ significance hadronic contribution to $\alpha(s)$, which is strongest direct evidence both time- and space-like regions achieved single measurement. By $e^+e^-\to\pi^+\pi^-$ cross...
We present the analysis of K− absorption processes on He4 leading to Λπ− final states, measured with KLOE spectrometer at DAΦNE e+e− collider and extract, for first time, modulus non-resonant K−n →Λπ− direct production amplitude about 33 MeV below K‾N threshold. This also allows disentangle nuclear at-rest from in-flight capture, momenta 120 MeV. The data are interpreted help a phenomenological model, is found be |AK−n→Λπ−|=(0.334±0.018stat−0.058+0.034syst)fm.
The determination of low-energy cross sections and branching ratios the $$\hbox {K}^-$$ multi-nucleon absorption processes in $$\Lambda \hbox {p}$$ $$\Sigma ^0\hbox final states performed by AMADEUS collaboration is presented. Low momentum ( $$p_{\mathrm{K}} \simeq 127\ {MeV}/\hbox {c}$$ ) produced at {DA}\Phi {NE}$$ collider are impinged on a Carbon target within KLOE detector two three nucleon disentangled comparing experimental data to phenomenological calculations. spectra interpreted...
Kinetic instabilities driven by runaway electrons (REs) have recently received attention in the fusion community as a means to control and diagnose REs tokamak. Experiments aimed at studying such kinetic been performed Frascati Tokamak Upgrade (FTU), where different families of waves identified, from wide-band bursting emissions quasi-monochromatic sharp lines, presence with energies few tens MeV. A specific family intense drive was directly observed for first time, during both early Ohmic...
Radiofrequency emission in the 0.4–3 GHz range from FTU tokamak presence of runaway electrons (REs) has been measured various plasma regimes. Rapid bursts associated with enhanced RE pitch-angle scattering reveal kinetic instabilities affecting evolution population buildup phase. Such measurements also provide a sensitive monitor for during early formation. The leading edge radio is much shorter than interleaving periods low emission; spectral broadening growth indicates nonlinear wave...
A bstract Using 1.63 fb −1 of integrated luminosity collected by the KLOE experiment about 7 × 10 4 K S → π ± e ∓ ν decays have been reconstructed. The measured value charge asymmetry for this decay is = (−4.9 5.7 stat 2.6 syst ) −3 , which almost twice more precise than previous result. combination these two measurements gives (−3.8 5.0 and, together with L semileptonic decay, provides significant tests CPT symmetry. obtained results are in agreement invariance.
The three precision measurements of the cross section $σ\big(e^+e^-\rightarrowπ^+π^-γ(γ)\big)$ using initial state radiation by KLOE collaboration provide an important input for prediction hadronic contribution to anomalous magnetic moment muon. These are correlated both statistical and systematic uncertainties and, therefore, simultaneous use these requires covariance matrices that fully describe correlations. We present construction them determine a combined measurement...
Based on a sample of 300 million $K_S$ mesons produced in $\phi \to K_L K_S$ decays recorded by the KLOE experiment at DA$\Phi$NE $e^+e^-$ collider we have measured branching fraction for decay $K_S \pi \mu \nu$. The are identified interaction $K_L$ detector. \nu$ selected boosted decision tree built with kinematic variables and time-of-flight measurement. Signal efficiencies evaluated data control samples $K_L decays. A fit to reconstructed muon mass distribution finds $7223 \pm 180$ signal...
In the frame of Next Generation Europe program, EU program to boost after-covid recovery, Italian Minister University and Research has funded a project called IRIS (Innovative Infrastructure for applied Superconductivity). New laboratories will be built or upgraded in six poles: Milan (hub infrastructure), Genoa, Frascati, Naples, Salerno Lecce, carry out basic research on magnetism superconducting materials, test wires, tapes large current cables, magnets construction with advanced...
Simultaneous measurements of the K−p→Σ0π0 and K−p→Λπ0 cross sections below 100 MeV/c kaon momentum have been performed. The beam delivered by DAΦNE collider was exploited to detect K− absorptions on hydrogen atoms populating gas mixture KLOE drift chamber. are determined with highest yet obtained precision in low regime [σK−p→Σ0π0=42.8±1.5(stat)−2.0+2.4(syst)mb σK−p→Λπ0=31.0±0.5(stat)−1.2+1.2(syst)mb] impacting pending questions several fields, ranging from nuclear particle physics,...
This work is a critical re-analysis of the results obtained by AMADEUS collaboration, concerning measurement K− multi-nucleon absorption reactions, on 12C target, in Λp final state (Del Grande et al 2019 Eur. Phys. J. C 79, 190). We show that good estimate two-nucleon total branching ratio can be extracted, given measured interactions and conversion reactions contain information almost all remaining hyperon-nucleon combinations. The main contribution to Carbon extracted from ratios found ,...
Based on an integrated luminosity of 1.61 fb$^{-1}$ $e^+e^-$ collision data collected with the KLOE detector at DA$\Phi$NE, Frascati $\phi$-factory, a search for $P$- and $CP$-violating decay $\eta\to\pi^{+}\pi^{-}$ has been performed. Radiative $\phi\to\eta\gamma$ is exploited to access $\eta$ mesons. No signal observed in $\pi^{+}\pi^{-}$ invariant mass spectrum, upper limit branching fraction 90\% confidence level determined be ${\mathcal B}(\eta\to\pi^{+}\pi^{-})<4.9\times10^{-6}$, which...
A bstract The ratio $$ \mathcal{R} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>R</mml:mi> </mml:math> = Γ( K S → πeν ) / π + − has been measured with a sample of 300 million mesons produced in ϕ L decays recorded by the KLOE experiment at DAΦNE e collider. events are selected boosted decision tree built kinematic variables and time-of-flight measurements. Data control samples used to evaluate signal selection efficiencies. With 49647 ± 316 we measure (1 . 0421 0 0066...
Tests of the T, CP and CPT symmetries in neutral kaon system are performed by direct comparison probabilities a transition process to its symmetry-conjugate. The exchange out states required for genuine test involving an antiunitary transformation implied time-reversal is implemented exploiting entanglement K0K‾0 pairs produced at ϕ-factory. A data sample collected KLOE experiment DAΦNE corresponding integrated luminosity about 1.7 fb−1 analysed study Δt distributions ϕ→KSKL→π+π−π±e∓ν...
Abstract The KLOE-2 experiment at the upgraded e + − DAΦNE collider of INFN Laboratori Nazionali di Frascati completed its data taking campaign end March 2018, collecting 5.5 fb −1 center mass energy corrisponding to ϕ -meson. Together with set predecessor KLOE, acquired sample 8 corresponds 2.4×10 10 -meson produced: largest ever collected (1020) colliders. Collaboration activities are now focused on reconstruction and analysis, continuing KLOE long-standing tradition flavour physics...
The aim of the AMADEUS experiment is to investigate lowenergy antikaon interaction with nucleons and nuclei, exploiting unique lowmomentum beam kaons produced by DAΦNE collider at LNF-INFN, constrain hadronic nuclear physics models in strangeness -1 sector. As a first step data collected 2004/2005 KLOE collaboration, consisting complex K − absorptions H, 4 He, 9 Be 12 C, was analyzed, leading invariant mass spectroscopic study very low momentum (about 100 MeV) in-flight captures. A dedicated...
EuPRAXIA@SPARC_LAB is a new multi-disciplinary user-facility that currently under construction at the Laboratori Nazionali di Frascati of INFN in framework EuPRAXIA collaboration. The electron beam will be accelerated by an X-band normal conducting linac followed Plasma WakeField Acceleration (PWFA) stage. It characterized small footprint and it drive two FEL beamlines for experiments, one VUV (50 to 180 nm) other XUV-soft x-rays (4 10 spectral region. As ancillary beamline, we are also...