D. Hutchcroft
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View article: Recent results from the NA62 experiment at CERN
Recent results from the NA62 experiment at CERN Open
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, the experiment has resumed data taking in 2021 and has received approval for operations until the onset …
View article: Proposal of the KOTO II experiment
Proposal of the KOTO II experiment Open
International audience
View article: Latest results from precision measurements at the NA62 experiment
Latest results from precision measurements at the NA62 experiment Open
Then NA62 experiment at CERN collected the world's largest dataset of charged Kaons, the main goal being the measurement of the $\mathcal{B}(K^+ \rightarrow \pi^+ \nu \bar{\nu})$. New results from the analyses of rare kaon and piondecays u…
View article: The LHCb VELO Upgrade module construction
The LHCb VELO Upgrade module construction Open
The LHCb detector has undergone a major upgrade for LHC Run 3. This Upgrade I detector facilitates operation at higher luminosity and utilises full-detector information at the LHC collision rate, critically including the use of vertex info…
View article: The LHCb VELO Upgrade Module Construction
The LHCb VELO Upgrade Module Construction Open
The LHCb detector has undergone a major upgrade for LHC Run 3. This Upgrade I detector facilitates operation at higher luminosity and utilises full-detector information at the LHC collision rate, critically including the use of vertex info…
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: Model-independent extraction of form factors and $|V_{cb}|$ in $\overline{B} \rightarrow D \ell^- \overlineν_\ell$ with hadronic tagging at BaBar
Model-independent extraction of form factors and $|V_{cb}|$ in $\overline{B} \rightarrow D \ell^- \overlineν_\ell$ with hadronic tagging at BaBar Open
Using the entire BaBar $Υ(4S)$ data set, the first two-dimensional unbinned angular analysis of the semileptonic decay $\overline{B} \rightarrow D \ell^- \overlineν_\ell$ is performed, employing hadronic reconstruction of the tag-side $B$ …
View article: Measurement of thermal properties of the LHCb VELO detector using track-based software alignment
Measurement of thermal properties of the LHCb VELO detector using track-based software alignment Open
The thermal properties of the LHCb Vertex Locator (VELO) are studied using the real-time detector alignment procedure. The variation of the position and orientation of the detector elements as a function of the operating temperature of the…
View article: Search for heavy neutral leptons using tau lepton decays at <i>BaBaR</i>
Search for heavy neutral leptons using tau lepton decays at <i>BaBaR</i> Open
This article presents a model-independent search for an additional, mostly sterile, heavy neutral lepton (HNL), that is capable of mixing with the Standard Model τ neutrino with a mixing strength of |Uτ4|2, corresponding to the absolute sq…
View article: Search for $B$ Mesogenesis at BABAR
Search for $B$ Mesogenesis at BABAR Open
A new mechanism has been proposed to simultaneously explain the presence of dark matter and the matter-antimatter asymmetry in the universe. This scenario predicts exotic $B$ meson decays into a baryon and a dark sector anti-baryon ($ψ_D$)…
View article: Measurement of the very rare $K^+ \to \pi^+ \nu \bar\nu$ decay
Measurement of the very rare $K^+ \to \pi^+ \nu \bar\nu$ decay Open
The decay K+→π+νν¯
\n, with a very precisely predicted branching ratio of less than 10−10
\n,
\nis among the best processes to reveal indirect effects of new physics.
\nThe NA62 experiment at CERN SPS is designed to study the K+→π+νν¯
\n d…
View article: Search for an Axionlike Particle in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi></mml:math> Meson Decays
Search for an Axionlike Particle in Meson Decays Open
Axionlike particles (ALPs) are predicted in many extensions of the standard model, and their masses can naturally be well below the electroweak scale. In the presence of couplings to electroweak bosons, these particles could be emitted in …
View article: Measurement of the very rare K+→π+νν decay at the NA62 experiment at CERN
Measurement of the very rare K+→π+νν decay at the NA62 experiment at CERN Open
The NA62 experiment reports the branching ratio measurement $BR(K^+\\to\\pi^+\\nu\\bar\\nu)$ at 68% CL, based on the observation of 20 signal candidates with an expected background of 7.0 events from the total data sample collected at the …
View article: Search for K+ decays to a lepton and invisible particles
Search for K+ decays to a lepton and invisible particles Open
Searches for heavy neutral leptons $N$ in the $K^+\\to e^+N$ and $K^+\\to \\mu^+N$ decay channels using the dataset collected by the NA62 experiment at CERN between 2016-2018 are presented. Upper limits on the corresponding mixing matrix e…
View article: The HEV Ventilator: at the interface between particle physics and biomedical engineering
The HEV Ventilator: at the interface between particle physics and biomedical engineering Open
A high-quality, low-cost ventilator, dubbed HEV, has been developed by the particle physics community working together with biomedical engineers and physicians around the world. The HEV design is suitable for use both in and out of hospita…
View article: Search for Lepton Flavor Violation in $Υ(3S)\rightarrow e^{\pm}μ^{\mp}$
Search for Lepton Flavor Violation in $Υ(3S)\rightarrow e^{\pm}μ^{\mp}$ Open
We report on the first search for electron-muon lepton flavor violation (LFV) in the decay of a $b$~quark and $b$~antiquark bound state. We look for the LFV decay $Υ(3S)\rightarrow e^{\pm}μ^{\mp}$ in a sample of 118~million $Υ(3S)$ mesons …
View article: Search for Darkonium in $e^+e^-$ Collisions
Search for Darkonium in $e^+e^-$ Collisions Open
Collider searches for dark sectors, new particles interacting only feebly with ordinary matter, have largely focused on identifying signatures of new mediators, leaving much of dark sector structures unexplored. In particular, the existenc…
View article: Readout Firmware of the Vertex Locator for LHCb Run 3 and Beyond
Readout Firmware of the Vertex Locator for LHCb Run 3 and Beyond Open
The new LHCb Vertex Locator (VELO) for LHCb, comprising a new pixel detector and readout electronics, will be installed in 2021 for data taking in Run 3 at the LHC. The electronics centers around the “VeloPix” ASIC at the front-end operati…
View article: Search for lepton number violation and other exotic processes at NA62
Search for lepton number violation and other exotic processes at NA62 Open
NA62 is a fixed target experiment at CERN, with the main goal of measuring the branching ratio of the very rare decay $K$$^{+}$ → $\\pi$$^{+}$$\\nu$$\\bar{\\nu}$ However, the wide physics program covered by the experiment allows the search…
View article: Searches for lepton flavour and lepton number violation in K$^+$ decays
Searches for lepton flavour and lepton number violation in K$^+$ decays Open
The NA62 experiment at the CERN SPS is designed to conduct precision tests of the Standard Model by studying rare decays of charged kaons. NA62 took data in 2016-2018 and collected a large sample of charged kaon decays into final states wi…
View article: The upgrade I of LHCb VELO—towards an intelligent monitoring platform
The upgrade I of LHCb VELO—towards an intelligent monitoring platform Open
The Large Hadron Collider beauty (LHCb) detector is designed to detect decays\nof b- and c- hadrons for the study of CP violation and rare decays. At the end\nof the LHC Run 2, many of the LHCb measurements remained statistically\ndominate…
View article: Phase I Upgrade of the Readout System of the Vertex Detector at the LHCb Experiment
Phase I Upgrade of the Readout System of the Vertex Detector at the LHCb Experiment Open
This article describes the high-speed system designed to meet the challenging requirements for the readout of the new pixel VErtex LOcator (VELO) of the upgraded LHCb experiment. All elements of the electronics readout chain will be renewe…
View article: Operational experience of current vertex detector atthe LHCb experiment
Operational experience of current vertex detector atthe LHCb experiment Open
The experience of the LHCb Vertex Locator from first LHC collisions to the final weeks of operation in 2018 are presented. The radiation damage and effects on the operations, including the operational changes made to ensure the optimized p…
View article: Velo Upgrade Module Nomenclature
Velo Upgrade Module Nomenclature Open
The nomenclature and geometry of the various constituents of velo upgrade hybrid sensors are defined, as well as their position within the modules. The modules nomenclature and their position along the z-axis are defined.
View article: Search for a Stable Six-Quark State at BABAR
Search for a Stable Six-Quark State at BABAR Open
Recent investigations have suggested that the six-quark combination uuddss could be a deeply bound state (S) that has eluded detection so far, and a potential dark matter candidate. We report the first search for a stable, doubly strange s…
View article: Search for $K^+ \to \pi^+ \nu \bar{\nu}$ at NA62
Search for $K^+ \to \pi^+ \nu \bar{\nu}$ at NA62 Open
The decay $K^{+} \\rightarrow \\pi^{+}\\nu\\overline{\\nu}$ has a very precisely predicted branching ratio ($\\sim 8\\times 10^{-11}$) and it is one of the best candidates to reveal indirect effects of new physics. The NA62 experiment at C…
View article: Search for the decay mode B[superscript 0] → pp[¯ over p][¯ over p]
Search for the decay mode B[superscript 0] → pp[¯ over p][¯ over p] Open
A search is presented for the four-body decay B[superscript 0] → pp[¯ over p][¯ over p] in a sample of 471 million B[¯ B] pairs collected with the BABAR detector, operated at the SLAC PEP-II asymmetric-energy e[superscript +]e[superscript …
View article: Heavy neutrino searches and NA62 status
Heavy neutrino searches and NA62 status Open
The NA62 experiment at CERN SPS recorded in 2007 a large sample of $K^+\toμ^+ν_μ$ decays. A peak search in the missing mass spectrum of this decay is performed. In the absence of observed signal, the limits obtained on $\mathcal{B}(K^+\toμ…
View article: Study of ϒ(1S) Radiative Decays to γπ[superscript +]π[superscript −] and γ K[superscript +]K[superscript −]
Study of ϒ(1S) Radiative Decays to γπ[superscript +]π[superscript −] and γ K[superscript +]K[superscript −] Open
We study the ϒ(1S) radiative decays to γπ[superscript +}]π[superscript -] and γK[superscript +]Kp[superscript -] using data recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e[superscript +]e[superscript -] co…