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  • Letter
  • Open Access

Enhanced search for neutral current Δ radiative single-photon production in MicroBooNE

P. Abratenko39, D. Andrade Aldana14, L. Arellano22, J. Asaadi38, A. Ashkenazi37, S. Balasubramanian12, B. Baller12, A. Barnard29, G. Barr29 et al. (The MicroBooNE Collaboration*)

G. Barr29, D. Barrow29, J. Barrow26, V. Basque12, J. Bateman15,22, O. Benevides Rodrigues14, S. Berkman25, A. Bhat7, M. Bhattacharya12, M. Bishai3, A. Blake19, B. Bogart24, T. Bolton18, M. B. Brunetti17,41, L. Camilleri10, D. Caratelli4, F. Cavanna12, G. Cerati12, A. Chappell41, Y. Chen33, J. M. Conrad23, M. Convery33, L. Cooper-Troendle30, J. I. Crespo-Anadón6, R. Cross41, M. Del Tutto12, S. R. Dennis5, P. Detje5, R. Diurba2, Z. Djurcic1, K. Duffy29, S. Dytman30, B. Eberly35, P. Englezos32, A. Ereditato7,12, J. J. Evans22, C. Fang4, W. Foreman14,20, B. T. Fleming7, D. Franco7, A. P. Furmanski26, F. Gao4, D. Garcia-Gamez13, S. Gardiner12, G. Ge10, S. Gollapinni20, E. Gramellini22, P. Green29, H. Greenlee12, L. Gu19, W. Gu3, R. Guenette22, P. Guzowski22, L. Hagaman7, M. D. Handley5, O. Hen23, C. Hilgenberg26, G. A. Horton-Smith18, A. Hussain18, B. Irwin26, M. S. Ismail30, C. James12, X. Ji27, J. H. Jo3, R. A. Johnson8, D. Kalra10, G. Karagiorgi10, W. Ketchum12, M. Kirby3, T. Kobilarcik12, N. Lane15,22, J.-Y. Li11, Y. Li3, K. Lin32, B. R. Littlejohn14, L. Liu12, W. C. Louis20, X. Luo4, T. Mahmud19, N. Majeed18, C. Mariani40, D. Marsden22, J. Marshall41, N. Martinez18, D. A. Martinez Caicedo34, S. Martynenko3, A. Mastbaum32, I. Mawby19, N. McConkey31, L. Mellet25, J. Mendez21, J. Micallef23,39, A. Mogan9, T. Mohayai16, M. Mooney9, A. F. Moor5, C. D. Moore12, L. Mora Lepin22, M. M. Moudgalya22, S. Mulleriababu2, D. Naples30, A. Navrer-Agasson15, N. Nayak3, M. Nebot-Guinot11, C. Nguyen32, J. Nowak19, N. Oza10, O. Palamara12, N. Pallat26, V. Paolone30, A. Papadopoulou1, V. Papavassiliou28, H. B. Parkinson11, S. F. Pate28, N. Patel19, Z. Pavlovic12, E. Piasetzky37, K. Pletcher25, I. Pophale19, X. Qian3, J. L. Raaf12, V. Radeka3, A. Rafique1, M. Reggiani-Guzzo11, J. Rodriguez Rondon34, M. Rosenberg39, M. Ross-Lonergan20, I. Safa10, D. W. Schmitz7, A. Schukraft12, W. Seligman10, M. H. Shaevitz10, R. Sharankova12, J. Shi5, E. L. Snider12, M. Soderberg36, S. Söldner-Rembold15, J. Spitz24, M. Stancari12, J. St. John12, T. Strauss12, K. Sutton10, A. M. Szelc11, N. Taniuchi5, K. Terao33, C. Thorpe22, D. Torbunov3, D. Totani4, M. Toups12, A. Trettin22, Y.-T. Tsai33, J. Tyler18, M. A. Uchida5, T. Usher33, B. Viren3, J. Wang27, M. Weber2, H. Wei21, A. J. White7, S. Wolbers12, T. Wongjirad39, K. Wresilo5, W. Wu30, E. Yandel4,20, T. Yang12, L. E. Yates12, H. W. Yu3, G. P. Zeller12, J. Zennamo12, and C. Zhang3 (The MicroBooNE Collaboration*)

  • 1Argonne National Laboratory (ANL), Lemont, Illinois 60439, USA
  • 2Universität Bern, Bern CH-3012, Switzerland
  • 3Brookhaven National Laboratory (BNL), Upton, New York 11973, USA
  • 4University of California, Santa Barbara, California 93106, USA
  • 5University of Cambridge, Cambridge CB3 0HE, United Kingdom
  • 6Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid E-28040, Spain
  • 7University of Chicago, Chicago, Illinois 60637, USA
  • 8University of Cincinnati, Cincinnati, Ohio 45221, USA
  • 9Colorado State University, Fort Collins, Colorado 80523, USA
  • 10Columbia University, New York, New York 10027, USA
  • 11University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
  • 12Fermi National Accelerator Laboratory (FNAL), Batavia, Illinois 60510, USA
  • 13Universidad de Granada, Granada E-18071, Spain
  • 14Illinois Institute of Technology (IIT), Chicago, Illinois 60616, USA
  • 15Imperial College London, London SW7 2AZ, United Kingdom
  • 16Indiana University, Bloomington, Indiana 47405, USA
  • 17The University of Kansas, Lawrence, Kansas 66045, USA
  • 18Kansas State University (KSU), Manhattan, Kansas 66506, USA
  • 19Lancaster University, Lancaster LA1 4YW, United Kingdom
  • 20Los Alamos National Laboratory (LANL), Los Alamos, New Mexico 87545, USA
  • 21Louisiana State University, Baton Rouge, Louisiana 70803, USA
  • 22The University of Manchester, Manchester M13 9PL, United Kingdom
  • 23Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
  • 24University of Michigan, Ann Arbor, Michigan 48109, USA
  • 25Michigan State University, East Lansing, Michigan 48824, USA
  • 26University of Minnesota, Minneapolis, Minnesota 55455, USA
  • 27Nankai University, Nankai District, Tianjin 300071, China
  • 28New Mexico State University (NMSU), Las Cruces, New Mexico 88003, USA
  • 29University of Oxford, Oxford OX1 3RH, United Kingdom
  • 30University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
  • 31Queen Mary University of London, London E1 4NS, United Kingdom
  • 32Rutgers University, Piscataway, New Jersey 08854, USA
  • 33SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
  • 34South Dakota School of Mines and Technology (SDSMT), Rapid City, South Dakota 57701, USA
  • 35University of Southern Maine, Portland, Maine 04104, USA
  • 36Syracuse University, Syracuse, New York 13244, USA
  • 37Tel Aviv University, Tel Aviv, Israel, 69978
  • 38University of Texas, Arlington, Texas 76019, USA
  • 39Tufts University, Medford, Massachusetts 02155, USA
  • 40Center for Neutrino Physics, Virginia Tech, Blacksburg, Virginia 24061, USA
  • 41University of Warwick, Coventry CV4 7AL, United Kingdom

  • *Contact author: microboone_info@fnal.gov
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Phys. Rev. D 112, L091101 – Published 17 November, 2025

DOI: https://doi.org/10.1103/49ds-5hfh

Abstract

We report results from an updated search for neutral current (NC) resonant Δ(1232) baryon production and subsequent Δ radiative decay (NC Δ→Nγ). We consider events with and without final state protons; events with a proton can be compared with the kinematics of a Δ(1232) baryon decay, while events without a visible proton represent a more generic phase space. In order to maximize sensitivity to each topology, we simultaneously make use of two different reconstruction paradigms, Pandora and Wire-Cell, which have complementary strengths, and select mostly orthogonal sets of events. Considering an overall scaling of the NC Δ→Nγ rate as an explanation of the MiniBooNE anomaly, our data exclude this hypothesis at 94.4% CL. When we decouple the expected correlations between NC Δ→Nγ events with and without final state protons, our data exclude an interpretation in which all excess events have associated protons at 2.0σ, and are consistent with an interpretation in which all excess events have no associated protons at 0.63σ.

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References (34)

  1. A. A. Aguilar-Arevalo et al. (MiniBooNE Collaboration), Updated MiniBooNE neutrino oscillation results with increased data and new background studies, Phys. Rev. D 103, 052002 (2021).
  2. M. A. Acero et al., White paper on light sterile neutrino searches and related phenomenology, J. Phys. G 51, 120501 (2024).
  3. S. N. Gninenko, LSND/MiniBooNE excess events and heavy neutrino from μ and K decays, Phys. Rev. D 83, 093010 (2011).
  4. O. Fischer, A. Hernández-Cabezudo, and T. Schwetz, Explaining the MiniBooNE excess by a decaying sterile neutrino with mass in the 250 MeV range, Phys. Rev. D 101, 075045 (2020).
  5. L. Alvarez-Ruso and E. Saul-Sala, Radiative decay of heavy neutrinos at MiniBooNE and MicroBooNE, arXiv:1705.00353.
  6. S. Vergani, N. W. Kamp, A. Diaz, C. A. Argüelles, J. M. Conrad, M. H. Shaevitz, and M. A. Uchida, Explaining the MiniBooNE excess through a mixed model of neutrino oscillation and decay, Phys. Rev. D 104, 095005 (2021).
  7. E. Bertuzzo, S. Jana, P. A. N. Machado, and R. Zukanovich Funchal, Dark neutrino portal to explain MiniBooNE excess, Phys. Rev. Lett. 121, 241801 (2018).
  8. A. Abdullahi, M. Hostert, and S. Pascoli, A dark seesaw solution to low energy anomalies: MiniBooNE, the muon (g−2), and BABAR, Phys. Lett. B 820, 136531 (2021).
  9. P. Ballett, S. Pascoli, and M. Ross-Lonergan, U(1)′ mediated decays of heavy sterile neutrinos in MiniBooNE, Phys. Rev. D 99, 071701 (2019).
  10. W. Abdallah, R. Gandhi, and S. Roy, Two-Higgs doublet solution to the LSND, MiniBooNE and muon g−2 anomalies, Phys. Rev. D 104, 055028 (2021).
  11. B. Dutta, S. Ghosh, and T. Li, Explaining (g−2)μ,e, the KOTO anomaly, and the MiniBooNE excess in an extended Higgs model with sterile neutrinos, Phys. Rev. D 102, 055017 (2020).
  12. C.-H. V. Chang, C.-R. Chen, S.-Y. Ho, and S.-Y. Tseng, Explaining the MiniBooNE anomalous excess via a leptophilic ALP-sterile neutrino coupling, Phys. Rev. D 104, 015030 (2021).
  13. W. Abdallah, R. Gandhi, T. Ghosh, N. Khan, S. Roy, and S. Roy, A 17 MeV pseudoscalar and the LSND, MiniBooNE and ATOMKI anomalies, J. High Energy Phys. 10 (2024) 086.
  14. R. Acciarri et al. (MicroBooNE Collaboration), Design and construction of the MicroBooNE detector, J. Instrum. 12, P02017 (2017).
  15. P. Abratenko et al. (MicroBooNE Collaboration), Search for neutrino-induced neutral-current Δ radiative decay in MicroBooNE and a first test of the MiniBooNE low energy excess under a single-photon hypothesis, Phys. Rev. Lett. 128, 111801 (2022).
  16. S. Navas et al. (Particle Data Group Collaboration), Review of particle physics, Phys. Rev. D 110, 030001 (2024).
  17. E. Wang, L. Alvarez-Ruso, and J. Nieves, Photon emission in neutral-current interactions at intermediate energies, Phys. Rev. C 89, 015503 (2014).
  18. R. Acciarri et al. (MicroBooNE Collaboration), The Pandora multi-algorithm approach to automated pattern recognition of cosmic-ray muon and neutrino events in the MicroBooNE detector, Eur. Phys. J. C 78, 82 (2018).
  19. P. Abratenko et al. (MicroBooNE Collaboration), Neutrino event selection in the MicroBooNE liquid argon time projection chamber using wire-cell 3D imaging, clustering, and charge-light matching, J. Instrum. 16, P06043 (2021).
  20. P. Abratenko et al. (MicroBooNE Collaboration), Cosmic ray background rejection with wire-cell LArTPC event reconstruction in the MicroBooNE detector, Phys. Rev. Appl. 15, 064071 (2021).
  21. P. Abratenko et al. (MicroBooNE Collaboration), Search for an anomalous excess of inclusive charged-current νe interactions in the MicroBooNE experiment using wire-cell reconstruction, Phys. Rev. D 105, 112005 (2022).
  22. K. J. Kelly and J. Kopp, More ingredients for an Altarelli cocktail at MiniBooNE, J. High Energy Phys. 05 (2023) 113.
  23. “Booster neutrino flux prediction at MicroBooNE,” MicroBooNE public-note 1031, http://microboone.fnal.gov/wp-content/uploads/MICROBOONE-NOTE-1031-PUB.pdf.
  24. L. Alvarez-Ruso et al. (GENIE Collaboration), Recent highlights from GENIE v3, Eur. Phys. J. Special Topics 230, 4449 (2021).
  25. P. Abratenko et al. (MicroBooNE Collaboration), New CC0π GENIE model tune for MicroBooNE, Phys. Rev. D 105, 072001 (2022).
  26. S. Agostinelli et al. (GEANT4 Collaboration), geant4–a simulation toolkit, Nucl. Instrum. Methods Phys. Res., Sect. A 506, 250 (2003).
  27. P. Abratenko et al. (MicroBooNE Collaboration), Novel approach for evaluating detector-related uncertainties in a LArTPC using MicroBooNE data, Eur. Phys. J. C 82, 454 (2022).
  28. P. Abratenko et al. (MicroBooNE Collaboration), First double-differential cross section measurement of neutral-current π0 production in neutrino-argon scattering in the MicroBooNE detector, Phys. Rev. Lett. 134, 161802 (2025).
  29. See Supplemental Material at http://link.aps.org/supplemental/10.1103/49ds-5hfh for more information about this work’s sidebands, sensitivities, and efficiencies.
  30. G. J. Feldman and R. D. Cousins, Unified approach to the classical statistical analysis of small signals, Phys. Rev. D 57, 3873 (1998).
  31. X. Ji, W. Gu, X. Qian, H. Wei, and C. Zhang, Combined Neyman–Pearson chi-square: An improved approximation to the Poisson-likelihood chi-square, Nucl. Instrum. Methods Phys. Res., Sect. A 961, 163677 (2020).
  32. P. Abratenko et al. (MicroBooNE Collaboration), First search for neutral current coherent single-photon production in MicroBooNE, arXiv:2502.06091.
  33. P. Abratenko et al. (MicroBooNE Collaboration), Inclusive search for anomalous single-photon production in MicroBooNE, arXiv:2502.06064.
  34. P. Abratenko et al. (MicroBooNE Collaboration), Enhanced search for neutral current Δ radiative single-photon production in MicroBooNE, Data Release (2025), 10.17182/hepdata.158441.v1.

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Phys. Rev. D 112, L091101– Published 17 November, 2025
  • Received 6 March 2025
  • Accepted 6 October 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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