M. Fiorini
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View article: Experimental evidence of male-male interaction in laboratory swarms of <i>Anopheles gambiae</i> mosquitoes
Experimental evidence of male-male interaction in laboratory swarms of <i>Anopheles gambiae</i> mosquitoes Open
Mosquitoes mostly mate in the context of swarms: to facilitate encounters with females, males form disordered aggregations over a visual marker, which serves as a positional reference. Due to the scarcity of high-resolution data, it remain…
View article: Review of INFN activities on characterization and applications of hybrid pixel detectors based on Timepix4 ASIC
Review of INFN activities on characterization and applications of hybrid pixel detectors based on Timepix4 ASIC Open
The Medipix4 international collaboration represents a landmark initiative in the field of pixelated radiation imaging and detection. Building on the successes of its predecessors—the Medipix2 and Medipix3 collaborations—this effort has bee…
View article: A response matrix determined with a coincidence-based acquisition for correction of charge sharing spectral distortions in energy-resolved photon counting detectors
A response matrix determined with a coincidence-based acquisition for correction of charge sharing spectral distortions in energy-resolved photon counting detectors Open
A model-independent method is proposed to characterize and correct charge sharing spectral distortions in energy-resolved X-ray acquisitions with pixellated photon-counting detectors. The technique is based on the determination of a coinci…
View article: Luminosity measurement with the LHCb RICH detectors in Run 3
Luminosity measurement with the LHCb RICH detectors in Run 3 Open
The LHCb Ring-Imaging Cherenkov detectors are built to provide charged hadron identification over a large range of momentum. The upgraded detectors are also capable of providing an independent measurement of the luminosity for the LHCb exp…
View article: Searches for hidden sectors using $K^+\toπ^+X$ decays
Searches for hidden sectors using $K^+\toπ^+X$ decays Open
Results from the study of the rare decays $K^+\toπ^+ν\barν$, $K^{+}\rightarrowπ^{+}μ^{+}μ^{-}$ and $K^{+}\rightarrowπ^{+}γγ$ at the NA62 experiment at CERN are interpreted in terms of improved limits for $\rm{B}(K^+\toπ^+X)$ and coupling p…
View article: Search for heavy neutral leptons in $π^+$ decays to positrons
Search for heavy neutral leptons in $π^+$ decays to positrons Open
A search for heavy neutral lepton ($N$) production in $π^+\to e^+ N$ in-flight decays using data collected by the NA62 experiment at CERN in 2017-2024 is reported. Upper limits for the extended neutrino mixing matrix element $|U_{e4}|^2$ a…
View article: Spin-Waves without Spin-Waves: A Case for Soliton Propagation in Starling Flocks
Spin-Waves without Spin-Waves: A Case for Soliton Propagation in Starling Flocks Open
Collective turns in starling flocks propagate linearly with negligible attenuation, indicating the existence of an underdamped sector in the dispersion relation. Beside granting linear propagation of the phase perturbations, the real part …
View article: DataPix4: A C++ framework for Timepix4 configuration and read-out
DataPix4: A C++ framework for Timepix4 configuration and read-out Open
DataPix4 (Data Acquisition for Timepix4 Applications) is a new C++ framework for the management of Timepix4 ASIC, a multi-purpose hybrid pixel detector designed at CERN. Timepix4 consists of a matrix of 448×512 pixels that can be connected…
View article: Energy calibration of a Timepix4 detector assembly with a compact quasi-monochromatic X-ray system
Energy calibration of a Timepix4 detector assembly with a compact quasi-monochromatic X-ray system Open
Timepix4 is an application-specific integrated circuit (ASIC) developed by the Medipix4 international collaboration. It features a 448 × 512 pixel matrix that can be bump-bonded to pixelated sensors of various materials and thicknesses opt…
View article: DataPix4: A C++ framework for Timepix4 configuration and read-out
DataPix4: A C++ framework for Timepix4 configuration and read-out Open
DataPix4 (Data Acquisition for Timepix4 Applications) is a new C++ framework for the management of Timepix4 ASIC, a multi-purpose hybrid pixel detector designed at CERN. Timepix4 consists of a matrix of 448x512 pixels that can be connected…
View article: Investigation of the burst phenomenon in SiPMs in liquid nitrogen
Investigation of the burst phenomenon in SiPMs in liquid nitrogen Open
Burst effect of Silicon Photomultiplier (SiPM) at cryogenic temperatures have been discovered few years ago looking at the dark count rate of SiPMs at liquid nitrogen temperatures. Bursts are trains of single signals that happen randomly a…
View article: Timepix4 spatial response characterization with X-ray monochromatic synchrotron beam
Timepix4 spatial response characterization with X-ray monochromatic synchrotron beam Open
The Timepix4 is a readout ASIC developed by the Medipix4 collaboration, designed to work with various semiconductor sensors to form detection systems with 448×512 pixels with a pitch of 55 µm. Its ability to simultaneously measure the Time…
View article: Search for Physics beyond the Standard Model at NA62
Search for Physics beyond the Standard Model at NA62 Open
View article: First search for K+ → π0πμe decays
First search for K+ → π0πμe decays Open
The first search for the lepton number violating decay K+→π0π−μ+e+ and lepton flavour violating decays K+→π0π+μ−e+, K+→π0π+μ+e− has been performed using a dataset collected by the NA62 experiment at CERN in 2016–2018. Upper limits of 2.9×1…
View article: First search for $K^+\toπ^0πμe$ decays
First search for $K^+\toπ^0πμe$ decays Open
The first search for the lepton number violating decay $K^+\toπ^0π^-μ^+e^+$ and lepton flavour violating decays $K^+\toπ^0π^+μ^-e^+$, $K^+\toπ^0π^+μ^+e^-$ has been performed using a dataset collected by the NA62 experiment at CERN in 2016-…
View article: Validation of Timepix4 energy calibration procedures with synchrotron X-ray beams
Validation of Timepix4 energy calibration procedures with synchrotron X-ray beams Open
The Timepix4 is an application-specific integrated circuit developed by the Medipix4 collaboration. The chip is a 448x512 matrix that can be connected, via bump-bonding, to pixelated sensors of various materials and thicknesses, forming ap…
View article: Timing resolution performance of Timepix4 bump-bonded assemblies
Timing resolution performance of Timepix4 bump-bonded assemblies Open
The timing performance of the Timepix4 application-specific integrated circuit (ASIC) bump-bonded to a 100 μ m thick n-on-p silicon sensor is presented. A picosecond pulsed infrared laser was used to generate electron-hole pairs in the sil…
View article: Investigation of the burst phenomenon in SiPMs at liquid nitrogen temperature
Investigation of the burst phenomenon in SiPMs at liquid nitrogen temperature Open
Burst effect of Silicon Photomultiplier (SiPM) at cryogenic temperatures have been discovered few years ago looking at the dark count rate of SiPMs at liquid nitrogen temperatures. Bursts are trains of single signals that happen randomly a…
View article: Timing resolution performance of Timepix4 bump-bonded assemblies
Timing resolution performance of Timepix4 bump-bonded assemblies Open
The timing performance of the Timepix4 application-specific integrated circuit (ASIC) bump-bonded to a $100\;μ\textrm{m}$ thick n-on-p silicon sensor is presented. A picosecond pulsed infrared laser was used to generate electron-hole pairs…
View article: First observation and study of the K± → π0π0μ±ν decay
First observation and study of the K± → π0π0μ±ν decay Open
View article: Status of searches for rare kaon decays at NA62 \& HIKE
Status of searches for rare kaon decays at NA62 \& HIKE Open
Recent results from searches for rare kaon decays with the NA62 experiment at CERN are reported, together with the future prospects. A future experiment HIKE, to go beyond NA62, has been proposed to push kaon physics to an unprecedented fr…
View article: Operation and performance of the NA62 Gigatracker
Operation and performance of the NA62 Gigatracker Open
The GigaTracKer is a hybrid silicon pixel detector designed for the fixed-target experiment NA62 at the CERN SPS aiming to measure the branching ratio of the very rare kaon decay $K^+ \\rightarrow \\pi^+\\nu \\bar{\\nu}$ with 10\\% precisi…
View article: Measurement of the K+ → π+γγ decay
Measurement of the K+ → π+γγ decay Open
View article: Physics Beyond the Standard Model with the NA62 experiment at CERN
Physics Beyond the Standard Model with the NA62 experiment at CERN Open
The first measurement of the branching ratio of the ultra-rare $K^+ \\to \\pi^+\\nu\\bar\\nu$ decay and the searches for production of feebly interacting particles predicted by dark scalar models from the NA62 experiment at CERN are presen…
View article: Cryogenic characterization of Hamamatsu HWB MPPCs for the DUNE photon detection system
Cryogenic characterization of Hamamatsu HWB MPPCs for the DUNE photon detection system Open
The Deep Underground Neutrino Experiment (DUNE) is a next generation experiment aimed to study neutrino oscillation. Its long-baseline configuration will exploit a Near Detector (ND) and a Far Detector (FD) located at a distance of ∼1300 k…
View article: Improved calorimetric particle identification in NA62 using machine learning techniques
Improved calorimetric particle identification in NA62 using machine learning techniques Open
A bstract Measurement of the ultra-rare $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ decay at the NA62 experiment at CERN requires high-performance particle identification to distinguish muons from pions. Calorimetric identific…
View article: First observation and study of the $K^{\pm} \rightarrow π^{0} π^{0} μ^{\pm} ν$ decay
First observation and study of the $K^{\pm} \rightarrow π^{0} π^{0} μ^{\pm} ν$ decay Open
The NA48/2 experiment at CERN reports the first observation of the $K^{\pm} \rightarrow π^{0} π^{0} μ^{\pm} ν$ decay based on a sample of 2437 candidates with 15% background contamination collected in 2003--2004. The decay branching ratio …
View article: Search for K+ decays into the π+e+e−e+e− final state
Search for K+ decays into the π+e+e−e+e− final state Open
The first search for ultra-rare K+ decays into the pi(+)e(+)e(-) e(+) e(-) final state is reported, using a dataset collected by the NA62 experiment at CERN in 2017-2018. An upper limit of 1.4x10(-8) at 90% CL is obtained for the branching…
View article: A study of the K+ → π0e+νγ decay
A study of the K+ → π0e+νγ decay Open
A bstract A sample of 1 . 3 × 10 5 K + → π 0 e + νγ candidates with less than 1% background was collected by the NA62 experiment at the CERN SPS in 2017–2018. Branching fraction measurements are obtained at percent relative precision in th…
View article: Monte Carlo and experimental evaluation of a Timepix4 compact gamma camera for coded aperture nuclear medicine imaging with depth resolution
Monte Carlo and experimental evaluation of a Timepix4 compact gamma camera for coded aperture nuclear medicine imaging with depth resolution Open
MC simulations and validation lab tests showed the expected performance of the MediPROBE4 compact gamma camera for gamma-ray 3D imaging.