M. Perrin‐Terrin
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View article: First NA62 search for long-lived new physics particle hadronic decays
First NA62 search for long-lived new physics particle hadronic decays Open
The NA62 experiment at CERN, designed to measure the highly-suppressed decay $K^+\to\pi^+\nu\bar\nu$, has the capability to collect data in a beam-dump mode, where $400~$GeV protons are dumped on an absorber. In this configuration, new phy…
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: Summary Report of the Physics Beyond Colliders Study at CERN
Summary Report of the Physics Beyond Colliders Study at CERN Open
The Physics Beyond Collider (PBC) Study Group was initially mandated by the CERN Management to prepare the previous European Particle Physics Strategy Update for CERN projects other than the high-energy frontier colliders. The main finding…
View article: nuSCOPE: A short-baseline neutrino beam at CERN for high-precision cross-section measurements
nuSCOPE: A short-baseline neutrino beam at CERN for high-precision cross-section measurements Open
A new generation of neutrino cross-section experiments at the GeV scale is crucial in the precision era of oscillation physics and lepton flavor studies. In this document, we present a novel neutrino beam design that leverages the experien…
View article: Observation of the $K^{+}\rightarrowπ^{+}ν\barν$ decay and measurement of its branching ratio
Observation of the $K^{+}\rightarrowπ^{+}ν\barν$ decay and measurement of its branching ratio Open
A measurement of the $K^{+}\rightarrowπ^{+}ν\barν$ decay by the NA62 experiment at the CERN SPS is presented, using data collected in 2021 and 2022. This dataset was recorded, after modifications to the beamline and detectors, at a higher …
View article: NuTag: a proof-of-concept study for a long-baseline neutrino beam
NuTag: a proof-of-concept study for a long-baseline neutrino beam Open
The study of neutrino oscillation at accelerators is limited by systematic uncertainties, in particular on the neutrino flux, cross section, and energy estimates. These systematic uncertainties could be eliminated by a novel experimental t…
View article: Search for Leptonic Decays of Dark Photons at NA62
Search for Leptonic Decays of Dark Photons at NA62 Open
The NA62 experiment at CERN, configured in beam-dump mode, has searched for dark photon decays in flight to electron-positron pairs using a sample of 1.4×1017 protons on dump collected in 2021. No evidence for a dark photon signal is obser…
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: Development of a new CEDAR for kaon identification at the NA62 experiment at CERN
Development of a new CEDAR for kaon identification at the NA62 experiment at CERN Open
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. The CEDAR-H detector was developed to minimise the amou…
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
A sample of 3984 candidates of the $K^{+} → π^{+} γγ$ decay, with an estimated background of 291 ± 14 events, was collected by the NA62 experiment at CERN during 2017–2018. In order to describe the observed di-photon mass spectrum, the nex…
View article: NuTag: proof-of-concept study for a long-baseline neutrino beam
NuTag: proof-of-concept study for a long-baseline neutrino beam Open
The study of neutrino oscillation at accelerators is limited by systematic uncertainties, in particular on the neutrino flux, cross-section, and energy estimates. These systematic uncertainties could be eliminated by a novel experimental t…
View article: Search for dark photon decays to μ+μ− at NA62
Search for dark photon decays to μ+μ− at NA62 Open
A bstract The NA62 experiment at CERN, designed to study the ultra-rare decay K + → π + $$ \nu \overline{\nu} $$ , has also collected data in beam-dump mode. In this configuration, dark photons may be produced by protons dumped on an …
View article: Comparison of Anodic and Au-Au Thermocompression Si-Wafer Bonding Methods for High-Pressure Microcooling Devices
Comparison of Anodic and Au-Au Thermocompression Si-Wafer Bonding Methods for High-Pressure Microcooling Devices Open
Silicon-based microchannel technology offers unmatched performance in the cooling of silicon pixel detectors in high-energy physics. Although Si–Si direct bonding, used for the fabrication of cooling plates, also meets the stringent requir…
View article: Comparison of Anodic and Au-Au Thermocompression Si-Wafer Bonding Methods for High-pressure Microcooling Devices
Comparison of Anodic and Au-Au Thermocompression Si-Wafer Bonding Methods for High-pressure Microcooling Devices Open
Silicon-based microchannel technology offers unmatched performances for cooling high energy physics silicon-pixels detectors. Although Si-Si direct bonding, used for the fabrication of cooling plates, meets the stringent requirements of th…
View article: Snowmass Neutrino Frontier: NF01 Topical Group Report on Three-Flavor Neutrino Oscillations
Snowmass Neutrino Frontier: NF01 Topical Group Report on Three-Flavor Neutrino Oscillations Open
This is the report from the Snowmass NF01 topical group and colleagues on the current status and expected future progress to understand the three-flavor neutrino oscillation picture.
View article: Neutrino tagging: a new tool for accelerator based neutrino experiments
Neutrino tagging: a new tool for accelerator based neutrino experiments Open
This article describes a new experimental method for accelerator based neutrino experiments called neutrino tagging . The method consists in exploiting the neutrino production mechanism, the "Equation missing" decay, to kinematically recon…
View article: Future Neutrino Beam Studies Under the Framework of Physics Beyond Colliders
Future Neutrino Beam Studies Under the Framework of Physics Beyond Colliders Open
A Physics Beyond Colliders (PBC) initiative was recently established at CERN to exploit the full scientific potential of its accelerator complex and scientific infrastructure to tackle fundamental open questions in particle physics through…
View article: Neutrino Tagging, a new tool for accelerator based neutrino experiments
Neutrino Tagging, a new tool for accelerator based neutrino experiments Open
This article describes a new experimental method for accelerator based neutrino experiments called neutrino tagging. The method consists in exploiting the neutrino production mechanism, the $π^{\pm}\toμ^{\pm}ν_μ$ decay, to kinematically re…
View article: Short-Pulse Laser-Assisted Fabrication of a Si-SiO2 Microcooling Device
Short-Pulse Laser-Assisted Fabrication of a Si-SiO2 Microcooling Device Open
Thermal management is one of the main challenges in the most demanding detector technologies and for the future of microelectronics. Microfluidic cooling has been proposed as a fully integrated solution to the heat dissipation problem in m…
View article: Sensitivity of the KM3NeT/ORCA detector to the neutrino mass ordering and beyond
Sensitivity of the KM3NeT/ORCA detector to the neutrino mass ordering and beyond Open
The KM3NeT collaboration is currently building a new generation of large-volume water-Cherenkov neutrino telescopes in the Mediterranean sea. Two detectors, ARCA and ORCA, are under construction. They feature different neutrino energy thre…
View article: The Gigatracker of the NA62 experiment at CERN
The Gigatracker of the NA62 experiment at CERN Open
NA62 is a fixed-target experiment at the CERN SPS designed to measure the branching ratio of the very rare kaon decay $K^{+} \\rightarrow \\pi^{+}\\nu \\bar{\\nu}$ with 10% precision. Measurements of time, momentum and direction of incomin…