NC Coherent pi0 Production in the MiniBooNE Antineutrino Data

Details NC Coherent pi0 Production in the MiniBooNE Antineutrino Data NC Coherent pi0 Production in the MiniBooNE Antineutrino Data

2008-06-13

arxiv.org/abs/0806.2347v1

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 4 figures, Proceedings of the 43rd Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile,

Scientific paper

The single largest background to future $\bar{\nu_{\mu}}\to \bar{\nu_e}$ ($\nu_\mu \to \nu_e$) oscillation searches is neutral current (NC) $\pi^{0}$ production. MiniBooNE, which began taking antineutrino data in January 2006, has the world's largest sample of reconstructed $\pi^{0}$'s produced by antineutrinos. These neutral pions are primarily produced through the $\Delta$ resonance but can also be created through ``coherent production.'' The latter process is the coherent sum of glancing scatters of antineutrinos off a neutron or proton, in which the nucleus is kept intact but a $\pi^{0}$ is created. A signature of this process is a $\pi^{0}$ which is highly forward-going. It is advantageous to study coherent production using antineutrinos rather than neutrinos because the ratio of coherent to resonant scattering is enhanced in antineutrino running. The first measurement of NC coherent $\pi^{0}$ production in the MiniBooNE antineutrino data is discussed here.

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