@Article{T2KCollaborationAbe_etal2019,
author="T2K Collaboration (Abe, K. et al
and Antonova, M.
and Cervera-Villanueva, A.
and Fernandez, P.
and Izmaylov, A.
and Novella, P.",
title="Search for neutral-current induced single photon production at the ND280 near detector in T2K",
journal="Journal of Physics G",
year="2019",
publisher="Iop Publishing Ltd",
volume="46",
number="8",
pages="08LT01--16pp",
optkeywords="T2K; neutrino; neutrino oscillation; neutrino interaction; Mini-BooNE; CP violation",
abstract="Neutrino neutral-current (NC) induced single photon production is a sub-leading order process for accelerator-based neutrino beam experiments including T2K. It is, however, an important process to understand because it is a background for electron (anti)neutrino appearance oscillation experiments. Here, we performed the first search of this process below 1 GeV using the fine-grained detector at the T2K ND280 off-axis near detector. By reconstructing single photon kinematics from electron-positron pairs, we achieved 95{\%} pure gamma ray sample from 5.738 x 10(20) protons-on-targets neutrino mode data. We do not find positive evidence of NC induced single photon production in this sample. We set the model-dependent upper limit on the cross-section for this process, at 0.114 x 10(-38) cm(2) (90{\%} C.L.) per nucleon, using the J-PARC off-axis neutrino beam with an average energy of < E-v > similar to 0.6 GeV. This is the first limit on this process below 1 GeV which is important for current and future oscillation experiments looking for electron neutrino appearance oscillation signals.",
optnote="WOS:000518888100001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4318), last updated on Tue, 24 Mar 2020 09:29:33 +0000",
issn="0954-3899",
doi="10.1088/1361-6471/ab227d",
opturl="https://arxiv.org/abs/1902.03848",
opturl="https://doi.org/10.1088/1361-6471/ab227d",
language="English"
}