Photon emission in neutral current interactions with nucleons and nuclei
Abstract
We report on our study of photon emission induced by Enu ~ 1 GeV (anti)neutrino neutral current interactions with nucleons and nuclei. This process is an important background for nu_e appearance oscillation experiments. At the relevant energies, the reaction is dominated by the excitation of the Delta (1232) resonance but there are also non-resonant contributions that, close to threshold, are fully determined by the effective chiral Lagrangian of strong interactions. We have obtained differential and integrated cross section for the (anti)neutrino-nucleon scattering and compare them with previous results. Furthermore, we have extended the model to nuclear targets taking into account Fermi motion, Pauli blocking and the in-medium modifications of the Delta properties. This study is important in order to reduce systematic effects in neutrino oscillation experiments.
Cite
@article{arxiv.1304.2702,
title = {Photon emission in neutral current interactions with nucleons and nuclei},
author = {L. Alvarez-Ruso and J. Nieves and E. Wang},
journal= {arXiv preprint arXiv:1304.2702},
year = {2013}
}
Comments
5 pages, 4 figures, Contribution to the Proceedings of the 8th International Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region (NuInt12)