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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - First constraints on light sterile neutrino oscillations from combined appearance and disappearance searches with the MicroBooNE detector
AU - MicroBooNE Collaboration
AU - Abratenko, P.
AU - Aldana, D. Andrade
AU - Anthony, J.
AU - Arellano, L.
AU - Asaadi, J.
AU - Ashkenazi, A.
AU - Balasubramanian, S.
AU - Baller, B.
AU - Barr, G.
AU - Barrow, J.
AU - Basque, V.
AU - Bathe-Peters, L.
AU - Rodrigues, O. Benevides
AU - Berkman, S.
AU - Bhanderi, A.
AU - Bhattacharya, M.
AU - Bishai, M.
AU - Blake, A.
AU - Bogart, B.
AU - Bolton, T.
AU - Book, J. Y.
AU - Camilleri, L.
AU - Caratelli, D.
AU - Terrazas, I. Caro
AU - Cavanna, F.
AU - Cerati, G.
AU - Chen, Y.
AU - Conrad, J. M.
AU - Convery, M.
AU - Cooper-Troendle, L.
AU - Crespo-Anadon, J. I.
AU - Tutto, M. Del
AU - Dennis, S. R.
AU - Detje, P.
AU - Devitt, A.
AU - Diurba, R.
AU - Dorrill, R.
AU - Duffy, K.
AU - Dytman, S.
AU - Eberly, B.
AU - Ereditato, A.
AU - Evans, J. J.
AU - Fine, R.
AU - Finnerud, O. G.
AU - Fleming, B. T.
AU - Nowak, J.
AU - Patel, N.
AU - Pophale, I.
AU - Thorpe, C.
N1 - 9 pages, 4 figures
PY - 2023/1/5
Y1 - 2023/1/5
N2 - We present a search for eV-scale sterile neutrino oscillations in the MicroBooNE liquid argon detector, simultaneously considering all possible appearance and disappearance effects within the $3+1$ active-to-sterile neutrino oscillation framework. We analyze the neutrino candidate events for the recent measurements of charged-current $\nu_e$ and $\nu_{\mu}$ interactions in the MicroBooNE detector, using data corresponding to an exposure of 6.37$\times$10$^{20}$ protons on target from the Fermilab booster neutrino beam. We observe no evidence of light sterile neutrino oscillations and derive exclusion contours at the $95\%$ confidence level in the plane of the mass-squared splitting $\Delta m^2_{41}$ and the sterile neutrino mixing angles $\theta_{\mu e}$ and $\theta_{ee}$, excluding part of the parameter space allowed by experimental anomalies. Cancellation of $\nu_e$ appearance and $\nu_e$ disappearance effects due to the full $3+1$ treatment of the analysis leads to a degeneracy when determining the oscillation parameters, which is discussed in this paper and will be addressed by future analyses.
AB - We present a search for eV-scale sterile neutrino oscillations in the MicroBooNE liquid argon detector, simultaneously considering all possible appearance and disappearance effects within the $3+1$ active-to-sterile neutrino oscillation framework. We analyze the neutrino candidate events for the recent measurements of charged-current $\nu_e$ and $\nu_{\mu}$ interactions in the MicroBooNE detector, using data corresponding to an exposure of 6.37$\times$10$^{20}$ protons on target from the Fermilab booster neutrino beam. We observe no evidence of light sterile neutrino oscillations and derive exclusion contours at the $95\%$ confidence level in the plane of the mass-squared splitting $\Delta m^2_{41}$ and the sterile neutrino mixing angles $\theta_{\mu e}$ and $\theta_{ee}$, excluding part of the parameter space allowed by experimental anomalies. Cancellation of $\nu_e$ appearance and $\nu_e$ disappearance effects due to the full $3+1$ treatment of the analysis leads to a degeneracy when determining the oscillation parameters, which is discussed in this paper and will be addressed by future analyses.
KW - hep-ex
U2 - 10.1103/PhysRevLett.130.011801
DO - 10.1103/PhysRevLett.130.011801
M3 - Journal article
VL - 130
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 1
M1 - 011801
ER -