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Measurement of the rare decay $K^+ \to \pi^+ \mu^+\mu^-$ at the NA62 experiment / Koval, Michal (Charles U.) /NA62 Collaboration
The NA62 experiment at CERN reports results from the study of the flavour-changing neutral current decay

$K^+ \to \pi^+ \mu^+\mu^-$ using a data sample recorded in 2017–2018 with a dedicated pre-scaled di-muon trigger. The sample comprises about 28k signal events with negligible background contamination, and the presented results include the most precise determination of the corresponding branching fraction and the form factor parameters..
2023 - 3 p. - Published in : J. Phys. : Conf. Ser. 2446 (2023) 012017 Fulltext: PDF;
In : International Conference on Kaon Physics 2022, Osaka, Japan, 13 - 16 Sep 2022, pp.012017

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Physics Beyond the Standard Model with the NA62 experiment at CERN / NA62 Collaboration
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 presented. The results of a search for in-flight decays of dark photon to

$\ell^+\ell^-$ pairs with data collected in beam-dump mode in 2021 are also reported..
2024 - 4 p. - Published in : PoS TAUP2023 (2024) 040 Fulltext: PDF;
In : 18th International Conference on Topics in Astroparticle and Underground Physics (TAUP 2023), Vienna, Austria, 28 Aug - 1 Sep 2023, pp.040

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Search for hadronic decays of feebly-interacting particles at NA62 / Cortina Gil, Eduardo (Louvain U., CP3) ; Jerhot, Jan (Louvain U., CP3 ; Munich, Max Planck Inst.) ; Lurkin, Nicolas (Louvain U., CP3) ; Bryman, Douglas (British Columbia U. ; TRIUMF) ; Numao, Toshio (TRIUMF) ; Velghe, Bob (TRIUMF) ; Wong, Vincent Wai Sum (TRIUMF) ; Hives, Zdenko (Charles U.) ; Husek, Tomas (Charles U. ; Birmingham U.) ; Kampf, Karol (Charles U.) et al.
The NA62 experiment at CERN has the capability to collect data in a beam-dump mode, where 400 GeV protons are dumped on an absorber. In this configuration, New Physics particles, including dark photons, dark scalars, and axion-like particles, may be produced in the absorber and decay in the instrumented volume beginning approximately 80 m downstream of the dump. [...]
arXiv:2502.04241; CERN-EP-2025-012.- Geneva : CERN, 2025 - 17 p. Draft (restricted): PDF; Fulltext: CERN-EP-2025-012 - PDF; 2502.04241 - PDF;

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Observation of the $K^+ \to \pi^+ \nu \bar\nu$ decay and measurement of its branching ratio / Cortina Gil, Eduardo (Louvain U., CP3) ; Jerhot, Jan (Louvain U., CP3 ; Munich, Max Planck Inst.) ; Lurkin, Nicolas (Louvain U., CP3) ; Bryman, Douglas (British Columbia U. ; TRIUMF) ; Numao, Toshio (TRIUMF) ; Velghe, Bob (TRIUMF) ; Wong, Vincent Wai Sum (TRIUMF) ; Hives, Zdenko (Charles U.) ; Husek, Tomas (Charles U. ; Birmingham U.) ; Kampf, Karol (Charles U.) et al.
A measurement of the

$K^+ \to \pi^+ \nu \bar\nu$ 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 instantaneous beam intensity with respect to the 2016–2018 data taking. [...]
arXiv:2412.12015; CERN-EP-2024-343.- Geneva : CERN, 2025-02 - 29 p. - Published in : JHEP 2502 (2025) 191 Draft (restricted): PDF; Fulltext: CERN-EP-2024-343 - PDF; 2412.12015 - PDF;

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First detection of a tagged neutrino in the NA62 experiment / NA62 Collaboration
The NA62 experiment at the CERN SPS reports the first detection of a tagged neutrino candidate based on the data collected in 2022. [...]
arXiv:2412.04033 ; CERN-EP-2024-324. - 2024 - 16.
Full text - Draft (restricted) - Fulltext

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First search for $K^+ \to \pi^0 \pi \mu e$ decays / NA62 Collaboration
The first search for the lepton number violating decay

$K^+ \to \pi^0 \pi^- \mu^+ e^+$ and lepton flavour violating decays

$K^+ \to \pi^0 \pi^+ \mu^- e^+$ ,

$K^+ \to \pi^0 \pi^+ \mu^+ e^-$ has been performed using a dataset collected by the NA62 experiment at CERN in 2016–2018. Upper limits of

$2.9\times 10^{-10}$ ,

$3.1 \times 10^{-10}$ and

$5.0 \times 10^{-10}$ , respectively, are obtained at 90% CL for the branching ratios of the three decays on the assumption of uniform phase-space distributions..
arXiv:2409.12981; CERN-EP-2024-224.- Geneva : CERN, 2024-11-12 - 9 p. - Published in : Phys. Lett. B 859 (2024) 139122 Draft (restricted): PDF; Fulltext: CERN-EP-2024-224 - PDF; 2409.12981 - PDF; Publication - PDF;

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Workshop summary: Kaons@CERN 2023 / Anzivino, G. (INFN, Perugia ; Perugia U.) ; Cuendis, Sergio Arguedas (Costa Rica U.) ; Bernard, V. (IJCLab, Orsay) ; Bijnens, J. (Lund U.) ; Bloch-Devaux, B. (Turin U.) ; Bordone, M. (CERN) ; Brizioli, F. (INFN, Perugia ; CERN) ; Brod, J. (Cincinnati U.) ; Camalich, J.M. (IAC, La Laguna ; Laguna U., Tenerife) ; Ceccucci, A. (CERN) et al.
Kaon physics is at a turning point -- while the rare-kaon experiments NA62 and KOTO are in full swing, the end of their lifetime is approaching and the future experimental landscape needs to be defined. With HIKE, KOTO-II and LHCb-Phase-II on the table and under scrutiny, it is a very good moment in time to take stock and contemplate about the opportunities these experiments and theoretical developments provide for particle physics in the coming decade and beyond. [...]
arXiv:2311.02923; CERN-TH-2023-206.- 2024-04-09 - 55 p.
- Published in : Eur. Phys. J. C Fulltext: 2311.02923 - PDF; document - PDF;

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Post-LS3 Experimental Options in ECN3 / Ahdida, C. (CERN) ; Arduini, G. (CERN ; Arizona State U.) ; Balazs, K. (CERN) ; Bartosik, H. (CERN) ; Bernhard, J. (CERN) ; Boyarsky, A. (Leiden U. ; IP2I, Lyon) ; Brod, J. (Cincinnati U.) ; Brugger, M. (CERN) ; Calviani, M. (CERN) ; Ceccucci, A. (CERN) et al.
The Experimental Cavern North 3 (ECN3) is an underground experimental cavern on the CERN Prévessin site. [...]
arXiv:2310.17726. - 113.
Fulltext

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Development of a new CEDAR for kaon identification at the NA62 experiment at CERN / NA62 Collaboration
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 amount of material in the path of the beam by using hydrogen gas as the radiator medium. [...]
arXiv:2312.17188; CERN-EP-2023-302.- Geneva : CERN, 2024-05-07 - 20 p. - Published in : JINST 19 (2024) P05005 Draft (restricted): PDF; Fulltext: 2312.17188 - PDF; document - PDF; CERN-EP-2023-302 - PDF;

Notice détaillée - Notices similaires - 22 commentaires

10.

High Intensity Kaon Experiments (HIKE) at the CERN SPS: Proposal for Phases 1 and 2 / HIKE Collaboration
A timely and long-term programme of kaon decay measurements at an unprecedented level of precision is presented, leveraging the capabilities of the CERN Super Proton Synchrotron (SPS). [...]
arXiv:2311.08231 ; CERN-SPSC-2023-031 ; SPSC-P-368. - 2023. - 147 p.
Fulltext - Fulltext

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Voir aussi: noms d'auteurs similaires
15	Koval, M
35	Koval, Michal

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