Oyama, Y. - Résultats de la recherche

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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;

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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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Updated T2K measurements of muon neutrino and antineutrino disappearance using <math display="inline"><mrow><mn>3.6</mn><mo>×</mo><mrow><msup><mrow><mn>10</mn></mrow><mrow><mn>21</mn></mrow></msup></mrow></mrow></math> protons on target / T2K Collaboration
Muon neutrino and antineutrino disappearance probabilities are identical in the standard three-flavor neutrino oscillation framework, but CPT violation and non-standard interactions can violate this symmetry. In this work we report the measurements of

$\sin^{2} \theta_{23}$ and

$\Delta m_{32}^2$ independently for neutrinos and antineutrinos. [...]
arXiv:2305.09916.- 2023-10-01 - 10 p. - Published in : Phys. Rev. D 108 (2023) 072011 Fulltext: 2305.09916 - PDF; Publication - PDF;

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First measurement of muon neutrino charged-current interactions on hydrocarbon without pions in the final state using multiple detectors with correlated energy spectra at T2K / T2K Collaboration
This paper reports the first measurement of muon neutrino charged-current interactions without pions in the final state using multiple detectors with correlated energy spectra at T2K. The data was collected on hydrocarbon targets using the off-axis T2K near detector (ND280) and the on-axis T2K near detector (INGRID) with neutrino energy spectra peaked at 0.6 GeV and 1.1 GeV respectively. [...]
arXiv:2303.14228.- 2023-12-01 - 36 p. - Published in : Phys. Rev. D 108 (2023) 112009 Fulltext: PDF;

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Measurements of neutrino oscillation parameters from the T2K experiment using $3.6\times10^{21}$ protons on targetMeasurements of neutrino oscillation parameters from the T2K experiment using $3.6\times 10^{21}$ protons on target / T2K Collaboration
The T2K experiment presents new measurements of neutrino oscillation parameters using

$19.7(16.3)\times10^{20}$ protons on target (POT) in (anti-)neutrino mode at the far detector (FD). Compared to the previous analysis, an additional

$4.7\times10^{20}$ POT neutrino data was collected at the FD. [...]
arXiv:2303.03222.- 2023-09-05 - 51 p. - Published in : Eur. Phys. J. C 83 (2023) 782 Fulltext: 2303.03222 - PDF; document - PDF;

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Scintillator ageing of the T2K near detectors from 2010 to 2021 / T2K Collaboration
The T2K experiment widely uses plastic scintillator as a target for neutrino interactions and an active medium for the measurement of charged particles produced in neutrino interactions at its near detector complex. Over 10 years of operation the measured light yield recorded by the scintillator based subsystems has been observed to degrade by 0.9--2.2% per year. [...]
arXiv:2207.12982.- 2022-10-17 - 35 p. - Published in : JINST 17 (2022) P10028 Fulltext: Publication - PDF; 2207.12982 - PDF;

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Neutron tagging following atmospheric neutrino events in a water Cherenkov detector / Super-Kamiokande Collaboration
We present the development of neutron-tagging techniques in Super-Kamiokande IV using a neural network analysis. The detection efficiency of neutron capture on hydrogen is estimated to be 26%, with a mis-tag rate of 0.016 per neutrino event. [...]
arXiv:2209.08609; FERMILAB-PUB-22-873-ND.- 2022-10-18 - 40 p. - Published in : JINST 17 (2022) P10029 Fulltext: 2209.08609 - PDF; document - PDF; ff15af3f0a01c9edd3bb9f60772a7df9 - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server

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First T2K measurement of transverse kinematic imbalance in the muon-neutrino charged-current single- $\pi^+$ production channel containing at least one proton / T2K Collaboration
This paper reports the first T2K measurement of the transverse kinematic imbalance in the single-

$\pi^+$ production channel of neutrino interactions. We measure the differential cross sections in the muon-neutrino charged-current interaction on hydrocarbon with a single

$\pi^+$ and at least one proton in the final state, at the ND280 off-axis near detector of the T2K experiment. [...]
arXiv:2102.03346.- 2021-06-22 - 27 p. - Published in : Phys. Rev. D 103 (2021) 112009 Article from SCOAP3: PDF; Fulltext: PDF;

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Improved constraints on neutrino mixing from the T2K experiment with $\mathbf{3.13\times10^{21}}$ protons on target / T2K Collaboration
The T2K experiment reports updated measurements of neutrino and antineutrino oscillations using both appearance and disappearance channels. This result comes from an exposure of

$14.9~(16.4) \times 10^{20}$ protons on target in neutrino (antineutrino) mode. [...]
arXiv:2101.03779.- 2021-06-17 - 59 p. - Published in : Phys. Rev. D 103 (2021) 112008 Article from SCOAP3: PDF; Fulltext: PDF;

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10.

T2K measurements of muon neutrino and antineutrino disappearance using $3.13\times 10^{21}$ protons on target / T2K Collaboration
We report measurements by the T2K experiment of the parameters

$\theta_{23}$ and

$\Delta m^2_{32}$ which govern the disappearance of muon neutrinos and antineutrinos in the three-flavor PMNS neutrino oscillation model at T2K's neutrino energy and propagation distance. Utilizing the ability of the experiment to run with either a mainly neutrino or a mainly antineutrino beam, muon-like events from each beam mode are used to measure these parameters separately for neutrino and antineutrino oscillations. [...]
arXiv:2008.07921.- 2021-01-27 - 9 p. - Published in : Phys. Rev. D 103 (2021) L011101 Article from SCOAP3: PDF; Fulltext: PDF;

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Voir aussi: noms d'auteurs similaires
153	Oyama, Y
8	Oyama, Yoshihiko
2	Oyama, Yuichi

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