Search for Heavy Neutral Leptons in Electron-Positron and Neutral-Pion Final States with the MicroBooNE Detector

MicroBooNE collaboration

doi:10.1103/PhysRevLett.132.041801

Search for Heavy Neutral Leptons in Electron-Positron and Neutral-Pion Final States with the MicroBooNE Detector

MicroBooNE collaboration

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We present the first search for heavy neutral leptons (HNLs) decaying into νe+e- or νπ0 final states in a liquid-argon time projection chamber using data collected with the MicroBooNE detector. The data were recorded synchronously with the NuMI neutrino beam from Fermilab's main injector corresponding to a total exposure of 7.01×1020 protons on target. We set upper limits at the 90% confidence level on the mixing parameter |Uμ4|2 in the mass ranges 10≤mHNL≤150 MeV for the νe+e- channel and 150≤mHNL≤245 MeV for the νπ0 channel, assuming |Ue4|2=|Uτ4|2=0. These limits represent the most stringent constraints in the mass range 35<mHNL<175 MeV and the first constraints from a direct search for νπ0 decays.

Original language	English (US)
Article number	041801
Journal	Physical review letters
Volume	132
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.132.041801
State	Published - Jan 26 2024

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© 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"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 SCOAP

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@article{5f6ab54f04954aa6a51b134ff8c4690f,

title = "Search for Heavy Neutral Leptons in Electron-Positron and Neutral-Pion Final States with the MicroBooNE Detector",

abstract = "We present the first search for heavy neutral leptons (HNLs) decaying into νe+e- or νπ0 final states in a liquid-argon time projection chamber using data collected with the MicroBooNE detector. The data were recorded synchronously with the NuMI neutrino beam from Fermilab's main injector corresponding to a total exposure of 7.01×1020 protons on target. We set upper limits at the 90% confidence level on the mixing parameter |Uμ4|2 in the mass ranges 10≤mHNL≤150 MeV for the νe+e- channel and 150≤mHNL≤245 MeV for the νπ0 channel, assuming |Ue4|2=|Uτ4|2=0. These limits represent the most stringent constraints in the mass range 35",

author = "{MicroBooNE collaboration} and P. Abratenko and O. Alterkait and {Andrade Aldana}, D. and L. Arellano and J. Asaadi and A. Ashkenazi and S. Balasubramanian and B. Baller and G. Barr and D. Barrow and J. Barrow and V. Basque and {Benevides Rodrigues}, O. and S. Berkman and A. Bhanderi and A. Bhat and M. Bhattacharya and M. Bishai and A. Blake and B. Bogart and T. Bolton and Book, {J. Y.} and Brunetti, {M. B.} and L. Camilleri and Y. Cao and D. Caratelli and F. Cavanna and G. Cerati and A. Chappell and Y. Chen and Conrad, {J. M.} and M. Convery and L. Cooper-Troendle and Crespo-Anad{\'o}n, {J. I.} and R. Cross and {Del Tutto}, M. and Dennis, {S. R.} and P. Detje and A. Devitt and R. Diurba and Z. Djurcic and R. Dorrill and K. Duffy and S. Dytman and B. Eberly and P. Englezos and Furmanski, {A. P.} and C. Hilgenberg and B. Irwin and D. Torbunov",

note = "Publisher Copyright: {\textcopyright} 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}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 SCOAP",

year = "2024",

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doi = "10.1103/PhysRevLett.132.041801",

language = "English (US)",

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T1 - Search for Heavy Neutral Leptons in Electron-Positron and Neutral-Pion Final States with the MicroBooNE Detector

AU - MicroBooNE collaboration

AU - Abratenko, P.

AU - Alterkait, O.

AU - Andrade Aldana, D.

AU - Arellano, L.

AU - Asaadi, J.

AU - Ashkenazi, A.

AU - Balasubramanian, S.

AU - Baller, B.

AU - Barr, G.

AU - Barrow, D.

AU - Barrow, J.

AU - Basque, V.

AU - Benevides Rodrigues, O.

AU - Berkman, S.

AU - Bhanderi, A.

AU - Bhat, A.

AU - Bhattacharya, M.

AU - Bishai, M.

AU - Blake, A.

AU - Bogart, B.

AU - Bolton, T.

AU - Book, J. Y.

AU - Brunetti, M. B.

AU - Camilleri, L.

AU - Cao, Y.

AU - Caratelli, D.

AU - Cavanna, F.

AU - Cerati, G.

AU - Chappell, A.

AU - Chen, Y.

AU - Conrad, J. M.

AU - Convery, M.

AU - Cooper-Troendle, L.

AU - Crespo-Anadón, J. I.

AU - Cross, R.

AU - Del Tutto, M.

AU - Dennis, S. R.

AU - Detje, P.

AU - Devitt, A.

AU - Diurba, R.

AU - Djurcic, Z.

AU - Dorrill, R.

AU - Duffy, K.

AU - Dytman, S.

AU - Eberly, B.

AU - Englezos, P.

AU - Furmanski, A. P.

AU - Hilgenberg, C.

AU - Irwin, B.

AU - Torbunov, D.

N1 - Publisher Copyright: © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"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 SCOAP

PY - 2024/1/26

Y1 - 2024/1/26

N2 - We present the first search for heavy neutral leptons (HNLs) decaying into νe+e- or νπ0 final states in a liquid-argon time projection chamber using data collected with the MicroBooNE detector. The data were recorded synchronously with the NuMI neutrino beam from Fermilab's main injector corresponding to a total exposure of 7.01×1020 protons on target. We set upper limits at the 90% confidence level on the mixing parameter |Uμ4|2 in the mass ranges 10≤mHNL≤150 MeV for the νe+e- channel and 150≤mHNL≤245 MeV for the νπ0 channel, assuming |Ue4|2=|Uτ4|2=0. These limits represent the most stringent constraints in the mass range 35

AB - We present the first search for heavy neutral leptons (HNLs) decaying into νe+e- or νπ0 final states in a liquid-argon time projection chamber using data collected with the MicroBooNE detector. The data were recorded synchronously with the NuMI neutrino beam from Fermilab's main injector corresponding to a total exposure of 7.01×1020 protons on target. We set upper limits at the 90% confidence level on the mixing parameter |Uμ4|2 in the mass ranges 10≤mHNL≤150 MeV for the νe+e- channel and 150≤mHNL≤245 MeV for the νπ0 channel, assuming |Ue4|2=|Uτ4|2=0. These limits represent the most stringent constraints in the mass range 35

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U2 - 10.1103/PhysRevLett.132.041801

DO - 10.1103/PhysRevLett.132.041801

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SN - 0031-9007

VL - 132

JO - Physical review letters

JF - Physical review letters

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M1 - 041801

ER -

Search for Heavy Neutral Leptons in Electron-Positron and Neutral-Pion Final States with the MicroBooNE Detector

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