M. Barbanera
A5106976707- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Quantum Chromodynamics and Particle Interactions
- Radiation Detection and Scintillator Technologies
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Computational Physics and Python Applications
- Radiation Therapy and Dosimetry
- CCD and CMOS Imaging Sensors
- Astrophysics and Cosmic Phenomena
- Astrophysical Phenomena and Observations
- Nuclear Physics and Applications
- Advanced X-ray and CT Imaging
- Atomic and Subatomic Physics Research
- Solar and Space Plasma Dynamics
- Calibration and Measurement Techniques
- Planetary Science and Exploration
- Medical Imaging Techniques and Applications
- Electron and X-Ray Spectroscopy Techniques
- Astronomical Observations and Instrumentation
- Distributed and Parallel Computing Systems
- Radiation Effects in Electronics
- Underwater Vehicles and Communication Systems
- Advanced Radiotherapy Techniques
Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
2015-2025
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2017-2024
Centre National de la Recherche Scientifique
2023-2024
Aix-Marseille Université
2023-2024
Roma Tre University
2024
University of Perugia
2015-2023
University of Geneva
2023
European Organization for Nuclear Research
2018-2023
Czech Technical University in Prague
2023
Istituto Nazionale di Fisica Nucleare
2018-2023
Launched on 2021 December 9, the Imaging X-ray Polarimetry Explorer (IXPE) is a NASA Small Mission in collaboration with Italian Space Agency (ASI). The mission will open new window of investigation—imaging x-ray polarimetry. observatory features three identical telescopes, each consisting mirror module assembly polarization-sensitive imaging detector at focus. A coilable boom, deployed orbit, provides necessary 4-m focal length. utilizes three-axis-stabilized spacecraft, which services such...
NA62 is a fixed-target experiment at the CERN SPS dedicated to measurements of rare kaon decays. Such measurements, like branching fraction K+ → π+ ν decay, have potential bring significant insights into new physics processes when comparison made with precise theoretical predictions. For this purpose, innovative techniques been developed, in particular, domain low-mass tracking devices. Detector construction spanned several years from 2009 2014. The collaboration started detector...
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>...
While X-ray Spectroscopy, Timing and Imaging have improved verymuch since 1962, when the first astronomical non-solar source was discovered, especially with launch of Newton/X-ray Multi-Mirror Mission, Rossi/X-ray Explorer Chandra/Advanced Astrophysics Facility, progress polarimetry has been meager. This is in part due to lack sensitive polarization detectors, fate approved missions because celestial sources appeared less polarized than expected. Only one positive measurement available until...
We present results over an 11-year Solar cycle of cosmic antiprotons based on <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mn>1.1</a:mn><a:mo>×</a:mo><a:msup><a:mn>10</a:mn><a:mn>6</a:mn></a:msup></a:math> events in the rigidity range from 1.00 to 41.9 GV. The <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mover accent="true"><c:mi>p</c:mi><c:mo stretchy="false">¯</c:mo></c:mover></c:math> fluxes exhibit distinct properties. magnitude...
Due to be launched in late 2021, the Imaging X-Ray Polarimetry Explorer (IXPE) is a NASA Small mission designed perform polarization measurements 2-8 keV band, complemented with imaging, spectroscopy and timing capabilities. At heart of focal plane set three polarization-sensitive Gas Pixel Detectors (GPD), each based on custom ASIC acting as charge-collecting anode. In this paper we shall review design, manufacturing, test IXPE focal-plane detectors, particular emphasis connection between...
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.
The NA62 experiment at CERN reports searches for $K^+\to\mu^+N$ and $K^+\to\mu^+\nu X$ decays, where $N$ $X$ are massive invisible particles, using the 2016-2018 data set. particle is assumed to be a heavy neutral lepton, results expressed as upper limits of ${\cal O}(10^{-8})$ neutrino mixing parameter $|U_{\mu4}|^2$ masses in range 200-384 MeV/$c^2$ lifetime exceeding 50 ns. considered scalar or vector hidden sector mediator decaying an final state, decay branching fraction 10-370 reported...
The NA62 experiment at the CERN SPS reports first search for $K^+ \rightarrow \pi^+ \nu \bar{\nu}$ using decay-in-flight technique, based on a sample of $1.21\times10^{11}$ $K^+$ decays collected in 2016. single event sensitivity is $3.15\times 10^{-10}$, corresponding to 0.267 Standard Model events. One signal candidate observed while expected background 0.152 This leads an upper limit $14 \times 10^{-10}$ branching ratio 95\% CL.
The results of a search for $\pi^0$ decays to photon and an invisible massive dark at the NA62 experiment CERN SPS are reported. From total $4.12\times10^8$ tagged mesons, no signal is observed. Assuming kinetic-mixing interaction, limits set on coupling ordinary as function mass, improving previous searches in mass range 60--110 MeV/$c^2$. present interpreted terms upper limit branching ratio electro-weak decay $\pi^0 \to \gamma \nu \overline{\nu}$, current by more than three orders magnitude.
A bstract The NA62 experiment at the CERN SPS reports a study of sample 4 × 10 9 tagged π 0 mesons from K + → ( γ ), searching for decay to invisible particles. No signal is observed in excess expected background fluctuations. An upper limit . − set on branching ratio 90% confidence level, improving previous results by factor 60. This result can also be interpreted as model- independent X , where particle escaping detection with mass range 0.110–0.155 GeV /c 2 and rest lifetime greater than...
Precision measurements by the Alpha Magnetic Spectrometer (AMS) on International Space Station of deuteron (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mi>D</a:mi></a:mrow></a:math>) flux are presented. The based <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mrow><c:mn>21</c:mn><c:mo>×</c:mo><c:msup><c:mrow><c:mn>10</c:mn></c:mrow><c:mrow><c:mn>6</c:mn></c:mrow></c:msup></c:mrow></c:math> <e:math...
A sample of 3984 candidates the K+→π+γγ decay, with an estimated background 291±14 events, was collected by NA62 experiment at CERN during 2017–2018. In order to describe observed di-photon mass spectrum, next-to-leading contribution in chiral perturbation theory found be necessary. The decay branching ratio full kinematic range is measured (9.61±0.17)×10−7. first search for production and prompt axion-like particle gluon coupling process K+→π+a, a→γγ also reported.
We report the properties of precision time structures cosmic nuclei He, Li, Be, B, C, N, and O fluxes over an 11-year solar cycle from May 2011 to November 2022 in rigidity range 1.92 60.3 GV. The show similar but not identical variations with amplitudes decreasing increasing rigidity. In particular, below 3.64 GV B fluxes, 2.15 are significantly less affected by modulation than He flux. observe that these differences linearly correlated spectral indices fluxes. This shows, a...
The NA62 experiment at CERN SPS is designed to study the $K^+\to\pi^+\nu\bar\nu$ decay. After collecting data in 2016, 2017, and 2018, has resumed taking 2021 received approval for operations until onset of LS3. first search lepton number violating decay $K^+\to\pi^0\pi^-\mu^+ e^+$ flavour decays $K^+\to\pi^0\pi^+\mu^+ e^-$ , $K^+\to\pi^0\pi^+\mu^- reported. More recent results from analyses $K^+\to\pi^+\gamma\gamma$ $\pi^0\to e^+e^-$ are also Additionally, New Physics collected during...
A bstract search for the K + → π X decay, where is a long-lived feebly interacting particle, performed through an interpretation of $$ {\pi}^{+}\nu \overline{\nu} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:mi>ν</mml:mi> <mml:mover> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> analysis data collected in 2017 by NA62 experiment at CERN. Two ranges masses, 0–110 MeV /c 2 and 154–260 , lifetimes above 100 ps are...
Abstract The measurement of cosmic rays at energies exceeding 100 TeV per nucleon is crucial for enhancing the understanding high-energy particle propagation and acceleration models in Galaxy. HERD a space-borne calorimetric experiment that aims to extend current direct measurements unexplored energies, such as protons one PeV. payload scheduled be installed on Chinese Space Station 2027. primary peculiarity instrument its capability measure particles coming from all directions, with main...
Abstract FOOT (FragmentatiOn Of Target) is a nuclear physics experiment currently under construction that will measure differential cross sections for the production of secondary fragments induced by interactions proton and ion beams, up to 400 MeV/u, with human tissues. By extending energy range about 800 also provide data useful radio-protection in space, as understanding fragmentation processes take place spacecraft shieldings crucial their optimisation. The collaboration building...
The NA62 experiment at CERN reports a search for the lepton number violating decays K+→π−e+e+ and K+→π−μ+μ+ using data sample collected in 2017. No signals are observed, upper limits on branching fractions of these 2.2×10−10 4.2×10−11 obtained, respectively, 90% confidence level. These improve previously reported measurements by factors 3 2, respectively.
A bstract The NA62 experiment reports an investigation of the $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <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> </mml:mover> </mml:math> mode from a sample K + decays collected in 2017 at CERN SPS. has achieved single event sensitivity (0 . 389 ± 0 024) × 10 − , corresponding to 2.2 events...
We present the precision measurements of 11 years daily cosmic positron fluxes in rigidity range from 1.00 to 41.9 GV based on 3.4×10^{6} positrons collected with Alpha Magnetic Spectrometer (AMS) aboard International Space Station. The show distinctly different time variations electron at short and long timescales. A hysteresis between is observed a significance greater than 5σ rigidities below 8.5 GV. On contrary, proton similar variation. Remarkably, we found that are modulated more for 7...
Scheduled to launch in late 2021, the Imaging X-ray Polarimetry Explorer (IXPE) is a NASA Small Mission collaboration with Italian Space Agency (ASI). The mission will open new window of investigation - imaging polarimetry. observatory features 3 identical telescopes each consisting mirror module assembly polarization-sensitive detector at focus. A coilable boom, deployed on orbit, provides necessary 4-m focal length. utilizes 3-axis-stabilized spacecraft which services such as power,...