Using the movable IWCD near detector at Hyper-Kamiokande, the NCQE-to-CCQE event ratio sampled at three off-axis angles can constrain axial and vector neutrino non-standard interactions at the 0.05 to 0.12 level, breaking degeneracies that a fixed spectrum cannot.
Analysis of gamma-ray production in neutral-current neutrino-oxygen interactions at energies above 200 MeV
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
It has long been recognized that observation of gamma rays originating from nuclear deexcitation can be exploited to identify neutral-current neutrino-nucleus interactions in water-Cherenkov detectors. We report the results of a calculation of the neutrino- and antineutrino-induced gamma-ray production cross section for oxygen target. Our analysis is focused on the kinematical region of neutrino energy larger than ~200 MeV, in which single-nucleon knockout is known to be the dominant reaction mechanism. The numerical results have been obtained using for the first time a realistic model of the target spectral function, extensively tested against electron-nucleus scattering data. We find that at neutrino energy 600 MeV the fraction of neutral-current interactions leading to emission of gamma-rays of energy larger than 6 MeV is ~41%, and that the contribution of the p_3/2 state is overwhelming.
fields
hep-ph 1years
2026 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
Moving a Detector to Probe New Neutrino Interactions: IWCD at Hyper-Kamiokande
Using the movable IWCD near detector at Hyper-Kamiokande, the NCQE-to-CCQE event ratio sampled at three off-axis angles can constrain axial and vector neutrino non-standard interactions at the 0.05 to 0.12 level, breaking degeneracies that a fixed spectrum cannot.