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Unveiling the shape of the $^{20}$Ne nucleus by measuring the flow coefficients with cumulants in PbNe and PbAr collisions at $\sqrt{s_{NN}} = 70.9$ GeV / LHCb Collaboration
The anisotropic flow coefficients $v_n$ quantify the collective medium response to the initial spatial anisotropy of the overlapping region in ion collisions and serve as sensitive probes of both the medium properties and shape of nuclear initial states. [...]
LHCb-CONF-2025-001. - 19.
Fulltext

Detaljerad journal

Status of searches for rare kaon decays at NA62 & HIKE / NA62 Collaboration
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 frontier [...]
2024 - 8 p. - Published in : PoS WIFAI2023 (2024) 027 Fulltext: PDF;
In : Workshop Italiano sulla Fisica ad Alta Intensita (WIFAI 2023), Rome, Italy, 8 - 10 Nov 2023, pp.027

Detaljerad journal

Search for heavy neutral leptons in $\pi^+$ decays to positrons / Bloch-Devaux, Brigitte (Louvain U., CP3 ; Birmingham U.) ; Cortina Gil, Eduardo (Louvain U., CP3) ; Minucci, Elisa (Louvain U., CP3 ; Frascati) ; Padolski, Sergey (Louvain U., CP3) ; Petrov, Plamen (Louvain U., CP3) ; Numao, Toshio (TRIUMF) ; Petrov, Yevgeniy (TRIUMF) ; Velghe, Bob (TRIUMF) ; Wong, Vincent Wai Sum (TRIUMF) ; Shang, Victor (TRIUMF) et al.
A search for heavy neutral lepton ($N$) production in $\pi^+\to e^+ N$ 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 $|U_{e4}|^2$ are established at the level of $10^{-8}$ for heavy neutral leptons with mass in the range 95-126 MeV/$c^2$ and lifetime exceeding 50 ns..
arXiv:2507.07345; CERN-EP-2025-152.- Geneva : CERN, 2025 - 16 p. Draft (restricted): PDF; Fulltext: CERN-EP-2025-152 - PDF; 2507.07345 - PDF;

Detaljerad journal - 14 comments

Searches for hidden sectors using $K^+\to\pi^+X$ decays / Cortina Gil, Eduardo (Louvain U., CP3) ; Jerhot, Jan (Louvain U., CP3 ; Munich, Max Planck Inst.) ; Minucci, Elisa (Louvain U., CP3 ; Frascati) ; Padolski, Sergey (Louvain U., CP3) ; Petrov, Plamen (Louvain U., CP3) ; Shaikhiev, Artur (Louvain U., CP3 ; Lancaster U.) ; Volpe, Roberta (Louvain U., CP3 ; INFN, Perugia) ; Numao, Toshio (TRIUMF) ; Petrov, Yevgeniy (TRIUMF) ; Velghe, Bob (TRIUMF) et al.
Results from the study of the rare decays $K^+\to\pi^+\nu\bar{\nu}$, $K^{+}\to \pi^{+}\mu^{+}\mu^{-}$ and $K^{+}\to\pi^{+}\gamma\gamma$ at the NA62 experiment at CERN are interpreted in terms of improved limits for $B(K^+\to\pi^+X)$ and coupling parameters of hidden-sector models, where X is a mediator. World-leading limits are achieved for dark photon, dark scalar and axion-like particle models..
arXiv:2507.17286; CERN-EP-2025-167.- Geneva : CERN, 2025 - 25 p. Draft (restricted): PDF; Fulltext: CERN-EP-2025-167 - PDF; 2507.17286 - PDF;

Detaljerad journal - 31 comments

Recent results from the NA62 experiment at CERN / NA62 Collaboration
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 of LS3. [...]
2025 - 6 p. - Published in : PoS QNP2024 (2025) 222 Fulltext: PDF;
In : 10th International Conference on Quarks and Nuclear Physics (QNP 2024), Barcelona, Spain, 8 - 12 Jul 2024, pp.222

Detaljerad journal

Latest results for searches of exotic decays with NA62 in beam-dump mode / Kleimenova, Alina (LPHE, Lausanne) /NA62 Collaboration
The NA62 experiment at CERN took data in 2016–2018 with the main goal of measuring the $K^+ \rightarrow \pi^+ \nu \bar{\nu}$ decay. In this talk we report on the search for visible decays of exotic mediators from data taken in "beam-dump" mode with the NA62 experiment. [...]
2025 - 5 p. - Published in : PoS DIS2024 (2025) 132 Fulltext: PDF;
In : 31st International Workshop on Deep Inelastic Scattering, Grenoble, France, 8 - 12 Apr 2024, pp.132

Detaljerad journal

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

Detaljerad journal

Search for hadronic decays of feebly-interacting particles at NA62 / NA62 Collaboration
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, 2025-05-25 - 17 p. - Published in : Eur. Phys. J. C 85 (2025) 571 Draft (restricted): PDF; Fulltext: CERN-EP-2025-012 - PDF; 2502.04241 - PDF; document - PDF;

Detaljerad journal - 17 comments

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) ; Numao, Toshio (TRIUMF) ; Velghe, Bob (TRIUMF) ; Wong, Vincent Wai Sum (TRIUMF) ; Bryman, Douglas (British Columbia U. ; 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, 2025-02-27 - 29 p. - Published in : JHEP 2502 (2025) 191 Draft (restricted): PDF; Fulltext: CERN-EP-2024-343 - PDF; 2412.12015 - PDF; document - PDF;

Detaljerad journal - 39 comments

10.

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. The candidate consists of a $K^+ \rightarrow \mu^+ \nu_{\mu}$ decay where the charged particles are reconstructed and the neutrino is detected through a charged-current interaction in a liquid krypton calorimeter..
arXiv:2412.04033; CERN-EP-2024-324.- Geneva : CERN, 2025-02-27 - 16 p. - Published in : Phys. Lett. B 863 (2025) 139345 Draft (restricted): PDF; Fulltext: PDF; preprint: PDF; publication: PDF;

Detaljerad journal - 18 comments

Se också: liknande författarnamn
20	Kleimenova, A
37	Kleimenova, Alina

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