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First measurement of neutron capture multiplicity in neutrino-oxygen neutral-current quasielasticlike interactions using an accelerator neutrino beam

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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First measurement of neutron capture multiplicity in neutrino-oxygen neutral-current quasielasticlike interactions using an accelerator neutrino beam. / T2K Collaboration ; O'Keeffe, Helen.
In: Physical Review D, Vol. 112, No. 3, 032003, 01.08.2025.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

T2K Collaboration & O'Keeffe, H 2025, 'First measurement of neutron capture multiplicity in neutrino-oxygen neutral-current quasielasticlike interactions using an accelerator neutrino beam', Physical Review D, vol. 112, no. 3, 032003. https://doi.org/10.1103/qh28-4znk

APA

T2K Collaboration, & O'Keeffe, H. (2025). First measurement of neutron capture multiplicity in neutrino-oxygen neutral-current quasielasticlike interactions using an accelerator neutrino beam. Physical Review D, 112(3), Article 032003. https://doi.org/10.1103/qh28-4znk

Vancouver

T2K Collaboration, O'Keeffe H. First measurement of neutron capture multiplicity in neutrino-oxygen neutral-current quasielasticlike interactions using an accelerator neutrino beam. Physical Review D. 2025 Aug 1;112(3):032003. doi: 10.1103/qh28-4znk

Author

T2K Collaboration ; O'Keeffe, Helen. / First measurement of neutron capture multiplicity in neutrino-oxygen neutral-current quasielasticlike interactions using an accelerator neutrino beam. In: Physical Review D. 2025 ; Vol. 112, No. 3.

Bibtex

@article{20d81999b9024cc3861ff5da76925acc,
title = "First measurement of neutron capture multiplicity in neutrino-oxygen neutral-current quasielasticlike interactions using an accelerator neutrino beam",
abstract = "We report the first measurement of neutron capture multiplicity in neutrino-oxygen neutral-current quasielasticlike interactions at the gadolinium-loaded Super-Kamiokande detector using the T2K neutrino beam, which has a peak energy of about 0.6 GeV. A total of 30 neutral-current quasielasticlike event candidates were selected from T2K data corresponding to an exposure of 1.76×1020 protons on target. The γ ray signals resulting from neutron captures were identified using a neural network. The flux-averaged mean neutron capture multiplicity was measured to be 1.37±0.33 (stat.)−0.27+0.17 (syst.), which is compatible within 2.3 sigma than predictions obtained using our nominal simulation. We discuss potential sources of systematic uncertainty in the prediction and demonstrate that a significant portion of this discrepancy arises from the modeling of hadron-nucleus interactions in the detector medium.",
author = "{T2K Collaboration} and H. Alarakia-Charles and T. Dealtry and A. J. Finch and R. J. Harris and S. J. Jenkins and T. P. Jones and L. L. Kormos and M. Lawe and S. V. Lewis and Helen O'Keeffe and P. N. Ratoff and A. J. Speers",
year = "2025",
month = aug,
day = "1",
doi = "10.1103/qh28-4znk",
language = "English",
volume = "112",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "3",

}

RIS

TY - JOUR

T1 - First measurement of neutron capture multiplicity in neutrino-oxygen neutral-current quasielasticlike interactions using an accelerator neutrino beam

AU - T2K Collaboration

AU - Alarakia-Charles, H.

AU - Dealtry, T.

AU - Finch, A. J.

AU - Harris, R. J.

AU - Jenkins, S. J.

AU - Jones, T. P.

AU - Kormos, L. L.

AU - Lawe, M.

AU - Lewis, S. V.

AU - O'Keeffe, Helen

AU - Ratoff, P. N.

AU - Speers, A. J.

PY - 2025/8/1

Y1 - 2025/8/1

N2 - We report the first measurement of neutron capture multiplicity in neutrino-oxygen neutral-current quasielasticlike interactions at the gadolinium-loaded Super-Kamiokande detector using the T2K neutrino beam, which has a peak energy of about 0.6 GeV. A total of 30 neutral-current quasielasticlike event candidates were selected from T2K data corresponding to an exposure of 1.76×1020 protons on target. The γ ray signals resulting from neutron captures were identified using a neural network. The flux-averaged mean neutron capture multiplicity was measured to be 1.37±0.33 (stat.)−0.27+0.17 (syst.), which is compatible within 2.3 sigma than predictions obtained using our nominal simulation. We discuss potential sources of systematic uncertainty in the prediction and demonstrate that a significant portion of this discrepancy arises from the modeling of hadron-nucleus interactions in the detector medium.

AB - We report the first measurement of neutron capture multiplicity in neutrino-oxygen neutral-current quasielasticlike interactions at the gadolinium-loaded Super-Kamiokande detector using the T2K neutrino beam, which has a peak energy of about 0.6 GeV. A total of 30 neutral-current quasielasticlike event candidates were selected from T2K data corresponding to an exposure of 1.76×1020 protons on target. The γ ray signals resulting from neutron captures were identified using a neural network. The flux-averaged mean neutron capture multiplicity was measured to be 1.37±0.33 (stat.)−0.27+0.17 (syst.), which is compatible within 2.3 sigma than predictions obtained using our nominal simulation. We discuss potential sources of systematic uncertainty in the prediction and demonstrate that a significant portion of this discrepancy arises from the modeling of hadron-nucleus interactions in the detector medium.

U2 - 10.1103/qh28-4znk

DO - 10.1103/qh28-4znk

M3 - Journal article

VL - 112

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 3

M1 - 032003

ER -