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Professor Helen O'Keeffe FHEA

Professor of Particle Physics

  1. 2019
  2. Published

    Measurement of neutron production in atmospheric neutrino interactions at the Sudbury Neutrino Observatory

    SNO Collaboration, 18/06/2019, In: Physical Review D. 99, 11, 19 p., 112007.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  3. Published

    Search for neutral-current induced single photon production at the ND280 near detector in T2K

    T2K Collaboration, Brailsford, D., Dealtry, T., Finch, A. J., Knox, A., Kormos, L. L., Lawe, M., Nowak, J., O'Keeffe, H. M., Ratoff, P. N. & Shaw, D., 1/08/2019, In: Journal of Physics G: Nuclear and Particle Physics. 46, 8, 16 p., 08LT01.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  4. Published

    J-PARC Neutrino Beamline Upgrade Technical Design Report

    T2K Collaboration, Brailsford, D., Dealtry, T., Finch, A. J., Knox, A., Kormos, L. L., Lamont, I., Lawe, M., Nowak, J., O'Keeffe, H. M., Ratoff, P. N. & Southwell, L., 14/08/2019, In: arxiv.org.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  5. Published

    Search for heavy neutrinos with the T2K near detector ND280

    T2K Collaboration, Brailsford, D., Dealtry, T., Finch, A. J., Knox, A., Kormos, L. L., Lawe, M., Nowak, J., O'Keeffe, H. M., Ratoff, P. N. & Shaw, D., 10/09/2019, In: Physical Review D. 100, 5, 10 p., 052006.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  6. Published

    Measurement of the $ν_μ$ charged-current cross sections on water, hydrocarbon, iron, and their ratios with the T2K on-axis detectors

    T2K Collaboration, Brailsford, D., Dealtry, T., Finch, A. J., Knox, A., Kormos, L. L., Lawe, M., Nowak, J., O'Keeffe, H. M., Ratoff, P. N. & Shaw, D., 26/09/2019, In: Progress of Theoretical and Experimental Physics. 2019, 9, 30 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  7. Published

    Cosmogenic neutron production at the Sudbury Neutrino Observatory

    SNO Collaboration, Kormos, L. L. & O'Keeffe, H. M., 12/12/2019, In: Physical Review D. 100, 11, 15 p., 112005.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  8. Published

    Recent T2K neutrino oscillation results

    O’Keeffe, H. M. & T2K Collaboration, 17/12/2019, In: Proceedings of Science. 367, 5 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  9. Published

    Measurement of neutrino and antineutrino neutral-current quasielasticlike interactions on oxygen by detecting nuclear deexcitation gamma rays

    T2K Collaboration, Brailsford, D., Dealtry, T., Finch, A. J., Knox, A., Kormos, L. L., Lawe, M., Nowak, J., O'Keeffe, H. M., Ratoff, P. N. & Walsh, J. G., 30/12/2019, In: Physical Review D. 100, 12, 19 p., 112009.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  10. 2020
  11. Published

    Measurement of the muon neutrino charged-current single $π^+$ production on hydrocarbon using the T2K off-axis near detector ND280

    T2K Collaboration, Brailsford, D., Dealtry, T., Finch, A. J., Knox, A., Kormos, L. L., Lamont, I., Lawe, M., Nowak, J., O'Keeffe, H. M., Shaw, D., Walsh, J. G. & Ratoff, P., 21/01/2020, In: Physical Review D. 101, 1, 19 p., 012007.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  12. Published

    Constraint on the matter–antimatter symmetry-violating phase in neutrino oscillations

    T2K Collaboration, Brailsford, D., Dealtry, T., Finch, A. J., Knox, A., Kormos, L. L., Lawe, M., Nowak, J., O'Keeffe, H. M., Ratoff, P. N. & Walsh, J. G., 15/04/2020, In: Nature. 580, p. 339-344 6 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  13. Published

    Search for Electron Antineutrino Appearance in a Long-baseline Muon Antineutrino Beam

    T2K Collaboration, Brailsford, D., Dealtry, T., Doyle, T. A., Finch, A. J., Knox, A., Kormos, L. L., Lawe, M., Nowak, J., O'Keeffe, H. M., Ratoff, P. N. & Walsh, J. G., 21/04/2020, In: Physical review letters. 124, 8 p., 161802.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  14. Published

    First combined measurement of the muon neutrino and antineutrino charged-current cross section without pions in the final state at T2K

    T2K Collaboration, Brailsford, D., Dealtry, T., Doyle, T. A., Finch, A. J., Knox, A., Kormos, L. L., Lawe, M., Nowak, J., O'Keeffe, H. M., Ratoff, P. N. & Walsh, J. G., 1/06/2020, In: Physical Review D. 101, 11, 44 p., 112001.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  15. Published

    Simultaneous measurement of the muon neutrino charged-current cross section on oxygen and carbon without pions in the final state at T2K

    T2K Collaboration, Dealtry, T., Finch, A. J., Kormos, L. L., Lawe, M., Nowak, J., O'Keeffe, H. M., Ratoff, P. N., Walsh, J. G. & Doyle, T., 16/06/2020, In: Physical Review D. 101, 11, 32 p., 112004.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  16. Published

    Measurement of neutron-proton capture in the SNO+ water phase

    SNO+ Collaboration, Kormos, L. L. & O'Keeffe, H. M., 10/07/2020, In: Physical Review C. 102, 1, 8 p., 014002.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  17. Published

    First measurement of the charged current ν ¯ μ double differential cross section on a water target without pions in the final state.

    T2K Collaboration, 21/07/2020, In: Physical Review D. 102, 1, 16 p., 012007.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  18. Published

    The Hyper-Kamiokande Experiment - Snowmass LOI

    Hyper-Kamiokande Collaboration, 2/09/2020, In: arXiv. 6 p.

    Research output: Contribution to Journal/MagazineJournal article

  19. Published

    A search for $hep$ solar neutrinos and the diffuse supernova neutrino background using all three phases of the Sudbury Neutrino Observatory

    SNO Collaboration, Kormos, L. L. & O'Keeffe, H. M., 29/09/2020, In: Physical Review D.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  20. Published

    T2K ND280 Upgrade - Technical Design Report

    T2K Collaboration, 14/10/2020, In: arxiv.org. 196 p.

    Research output: Contribution to Journal/MagazineJournal article

  21. Published

    Measurement of the charged-current electron (anti-)neutrino inclusive cross-sections at the T2K off-axis near detector ND280

    T2K Collaboration, Brailsford, D., Dealtry, T., Finch, A. J., Knox, A., Kormos, L. L., Lawe, M., Nowak, J., O'Keeffe, H. M., Ratoff, P. N. & Walsh, J. G., 19/10/2020, In: Journal of High Energy Physics. 10, 43 p., 114.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  22. 2021
  23. Published

    T2K measurements of muon neutrino and antineutrino disappearance using $3.13\times 10^{21}$ protons on target

    T2K Collaboration, Dealtry, T., Doyle, T. A., Finch, A. J., Kormos, L. L., Nowak, J., O'Keeffe, H. M., Ratoff, P. N. & Walsh, J. G., 1/01/2021, In: Physical Review D. 103, 1, 9 p., L011101.

    Research output: Contribution to Journal/MagazineLetterpeer-review

  24. Published

    Measurements of $\barν_μ$ and $\barν_μ + ν_μ$ charged-current cross-sections without detected pions nor protons on water and hydrocarbon at mean antineutrino energy of 0.86 GeV

    T2K Collaboration, Brailsford, D., Dealtry, T., Doyle, T. A., Finch, A. J., Knox, A., Kormos, L. L., Lawe, M., Nowak, J., O'Keeffe, H. M., Ratoff, P. N. & Walsh, J. G., 30/04/2021, In: Progress of Theoretical and Experimental Physics. 2021, 4, 28 p., 043C01.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  25. Published

    Development, characterisation, and deployment of the SNO+ liquid scintillator

    SNO+ Collaboration, Kormos, L. L., O'Keeffe, H. M. & Parnell, M. J., 10/05/2021, In: Journal of Instrumentation. 16, 24 p., P05009.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  26. Published

    Improved constraints on neutrino mixing from the T2K experiment with $\mathbf{3.13\times10^{21}}$ protons on target

    T2K Collaboration, Dealtry, T., Doyle, T. A., Finch, A. J., Kormos, L. L., Lawe, M., Nowak, J., O'Keeffe, H. M., Ratoff, P. N. & Walsh, J. G., 1/06/2021, In: Physical Review D. 103, 11, 59 p., 112008.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  27. Published

    Improved constraints on neutrino mixing from the T2K experiment with 3.13×1021 protons on target

    T2K Collaboration, 1/06/2021, In: Physical Review D. 103, 11, 59 p., 112008.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  28. Published

    First T2K measurement of transverse kinematic imbalance in the muon-neutrino charged-current single-$π^+$ production channel containing at least one proton

    T2K Collaboration, Dealtry, T., Doyle, T. A., Finch, A. J., Kormos, L. L., Lawe, M., Nowak, J., O'Keeffe, H. M., Ratoff, P. N. & Walsh, J. G., 21/06/2021, In: Physical Review D. 103, 11, 27 p., 112009.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

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