@misc{10481/74454,
year = {2022},
month = {3},
url = {http://hdl.handle.net/10481/74454},
abstract = {We report results from a search for neutrino-induced neutral current (NC) resonant Δð1232Þ baryon
production followed by Δ radiative decay, with a h0.8i GeV neutrino beam. Data corresponding to
MicroBooNE’s first three years of operations (6.80 × 1020 protons on target) are used to select single-photon
events with one or zero protons and without charged leptons in the final state (1γ1p and 1γ0p, respectively).
The background is constrained via an in situ high-purity measurement of NC π0 events, made possible via
dedicated 2γ1p and 2γ0p selections. A total of 16 and 153 events are observed for the 1γ1p and 1γ0p
selections, respectively, compared to a constrained background prediction of 20.5   3.65ðsystÞ and 145.1  
13.8ðsystÞ events. The data lead to a bound on an anomalous enhancement of the normalization of NC Δ
radiative decay of less than 2.3 times the predicted nominal rate for this process at the 90% confidence level
(C.L.). The measurement disfavors a candidate photon interpretation of the MiniBooNE low-energy excess as
a factor of 3.18 times the nominal NC Δ radiative decay rate at the 94.8% C.L., in favor of the nominal
prediction, and represents a greater than 50-fold improvement over the world’s best limit on single-photon
production in NC interactions in the sub-GeV neutrino energy range.},
organization = {European Union’s Horizon 2020 Marie Skłodowska-Curie Actions},
organization = {Fermi Research Alliance, LLC

DE-AC02-07CH11359},
organization = {High Energy Physics and Nuclear Physics},
organization = {United Kingdom Research and Innovation},
organization = {National Science Foundation},
organization = {U.S. Department of Energy},
organization = {Office of Science},
organization = {Science and Technology Facilities Council},
organization = {Royal Society},
organization = {Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung},
publisher = {American Physical Society},
title = {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},
doi = {10.1103/PhysRevLett.128.111801},
author = {García Gámez, Diego and Abratenko, P.},
}