CERN Accelerating science

CERN Document Server 找到 30 笔记录  1 - 10下一个最後  跳到记录: 检索需时 0.77 秒. 
1.
Searching for Light Dark Matter and Dark Sectors with the NA64 experiment at the CERN SPS / NA64 Collaboration
Since its approval in 2016, NA64 has pioneered light dark matter (LDM) searches with electron, positron, muon, and hadron beams. [...]
arXiv:2505.14291.
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Fulltext
2.
High efficiency veto hadron calorimeter in the NA64 experiment at CERN / NA64 Collaboration
NA64 is a fixed-target experiment at the CERN SPS designed to search for Light particle Dark Matter (LDM) candidates with masses in the sub-GeV range. During the 2016-2022 runs, the experiment obtained the world-leading constraints, leaving however part of the well-motivated region of parameter space suggested by benchmark LDM models still unexplored. [...]
arXiv:2503.11275; CERN-EP-2025-04.- 2025-07-18 - 13 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1081 (2026) 170830 Fulltext: 2503.11275 - PDF; document - PDF;
3.
Neutrino Interaction Vertex Reconstruction in DUNE with Pandora Deep Learning / DUNE Collaboration
The Pandora Software Development Kit and algorithm libraries perform reconstruction of neutrino interactions in liquid argon time projection chamber detectors. Pandora is the primary event reconstruction software used at the Deep Underground Neutrino Experiment, which will operate four large-scale liquid argon time projection chambers at the far detector site in South Dakota, producing high-resolution images of charged particles emerging from neutrino interactions. [...]
arXiv:2502.06637; FERMILAB-PUB-25-0037-LBNF.- 2025-06-25 - 24 p. - Published in : 10.1140/epjc/s10052-025-14313-8 Fulltext: 14efb83d5a7785c0edf297cd09123c2c - PDF; 2502.06637 - PDF; d3edfddb498a61df9dd782411ca4ae78 - PDF; document - PDF; Fulltext from Publisher: PDF; External link: Fermilab Accepted Manuscript
4.
Proof of principle for a light dark matter search with low-energy positron beams at NA64 / NA64 Collaboration
Thermal light dark matter (LDM) with particle masses in the 1 MeV - 1 GeV range could successfully explain the observed dark matter abundance as a relic from the primordial Universe. In this picture, a new feeble interaction acts as a "portal" between the Standard Model and LDM particles, allowing for the exploration of this paradigm at accelerator experiments. [...]
arXiv:2502.04053.- 2025-06-26 - 34 p. - Published in : JHEP 2506 (2025) 256 Fulltext: 2502.04053 - PDF; document - PDF;
5.
Shedding light on dark sectors with high-energy muons at the NA64 experiment at the CERN SPS / NA64 Collaboration
A search for Dark Sectors is performed using the unique M2 beam line at the CERN Super Proton Synchrotron. New particles ($X$) could be produced in the bremsstrahlung-like reaction of high energy 160 GeV muons impinging on an active target, $\mu N\rightarrow\mu NX$, followed by their decays, $X\rightarrow\text{invisible}$. [...]
arXiv:2409.10128; CERN-EP-2024-236.- Geneva : CERN, 2024-12-01 - 23 p. - Published in : Phys. Rev. D 110 (2024) 112015 Draft (restricted): PDF; Fulltext: CERN-EP-2024-236 - PDF; 2409.10128 - PDF; Publication - PDF;
6.
First joint oscillation analysis of Super-Kamiokande atmospheric and T2K accelerator neutrino data / T2K Collaboration
The Super-Kamiokande and T2K collaborations present a joint measurement of neutrino oscillation parameters from their atmospheric and beam neutrino data. It uses a common interaction model for events overlapping in neutrino energy and correlated detector systematic uncertainties between the two datasets, which are found to be compatible. [...]
arXiv:2405.12488.- 2025-01-02 - 12 p. - Published in : Phys. Rev. Lett. 134 (2025) 011801 Fulltext: 2405.12488 - PDF; Publication - PDF;
7.
First constraints on the L$_{μ}$− L$_{τ}$ explanation of the muon g-2 anomaly from NA64-e at CERN / NA64 Collaboration
The inclusion of an additional $U(1)$ gauge $L_\mu-L_\tau$ symmetry would release the tension between the measured and the predicted value of the anomalous muon magnetic moment: this paradigm assumes the existence of a new, light $Z^\prime$ vector boson, with dominant coupling to $\mu$ and $\tau$ leptons and interacting with electrons via a loop mechanism. The $L_\mu-L_\tau$ model can also explain the Dark Matter relic abundance, by assuming that the $Z^\prime$ boson acts as a ``portal'' to a new Dark Sector of particles in Nature, not charged under known interactions. [...]
arXiv:2404.06982; CERN-EP-2024-103.- Geneva : CERN, 2024-07-23 - 15 p. - Published in : JHEP 2407 (2024) 212 Draft (restricted): PDF; Fulltext: CERN-EP-2024-103 - PDF; NA64-PAPER-24-02 - PDF; 2404.06982 - PDF; document - PDF;
8.
First Results in the Search for Dark Sectors at NA64 with the CERN SPS High Energy Muon Beam / NA64 Collaboration
We report on a search for a new $Z'$ ($L_\mu-L_\tau$) vector boson performed at the NA64 experiment employing a high energy muon beam and a missing energy-momentum technique. Muons from the M2 beamline at the CERN Super Proton Synchrotron with a momentum of 160 GeV/c are directed to an active target. [...]
arXiv:2401.01708; CERN-EP-2023-306.- Geneva : CERN, 2024-05-21 - 5 p. - Published in : Phys. Rev. Lett. 132 (2024) 211803 Draft (restricted): PDF; Fulltext: CERN-EP-2023-306 - PDF; 2401.01708 - PDF; Publication - PDF;
9.
The DUNE Far Detector Vertical Drift Technology, Technical Design Report / DUNE Collaboration
DUNE is an international experiment dedicated to addressing some of the questions at the forefront of particle physics and astrophysics, including the mystifying preponderance of matter over antimatter in the early universe. The dual-site experiment will employ an intense neutrino beam focused on a near and a far detector as it aims to determine the neutrino mass hierarchy and to make high-precision measurements of the PMNS matrix parameters, including the CP-violating phase. [...]
arXiv:2312.03130; FERMILAB-TM-2813-LBNF.- 2024-08-09 - 17 p. Fulltext: PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
10.
Measurements of the $\nu_{\mu}$ and $\bar{\nu}_{\mu}$-induced coherent charged pion production cross cections on $^{12}C$ by the T2K experiment / T2K Collaboration
We report an updated measurement of the $\nu_{\mu}$-induced, and the first measurement of the $\bar{\nu}_{\mu}$-induced coherent charged pion production cross section on $^{12}C$ nuclei in the T2K experiment. This is measured in a restricted region of the final-state phase space for which $p_{\mu,\pi} > 0.2$ GeV, $\cos(\theta_{\mu}) > 0.8$ and $\cos(\theta_{\pi}) > 0.6$, and at a mean (anti)neutrino energy of 0.85 GeV using the T2K near detector. [...]
arXiv:2308.16606.- 2023-11-01 - 15 p. - Published in : Phys. Rev. D 108 (2023) 092009 Fulltext: 2308.16606 - PDF; Publication - PDF;

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1 Bueno, L Molina
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