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

2 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{26bd68b271b44aa89cd0dc1c77d3daf9,

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 A. Ereditato and Evans, {J. J.} and Furmanski, {A. P.} and Dmitrii 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",

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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 - Ereditato, A.

AU - Evans, J. J.

AU - Furmanski, A. P.

AU - Torbunov, Dmitrii

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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DO - 10.1103/PhysRevLett.132.041801

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JO - Physical review letters

JF - Physical review letters

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ER -

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

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