Measurement of inclusive ${\pi }^0$ production in the Charged-Current Interactions of Neutrinos in a 1.3-GeV wide band beam

Abstract

In this paper we report on the measurement of the rate of inclusive ${\pi }^0$ production induced by charged-current neutrino interactions in a C${}_8$H${}_8$ target at a mean energy of 1.3 GeV in the K2K near detector. Out of a sample of 11,606 charged current neutrino interactions, we select 479 ${\pi }^0$ events with two reconstructed photons. We find that the cross section for the inclusive ${\pi }^0$ production relative to the charged-current quasi-elastic cross section is $$\frac{{\sigma }_{CC{\pi }^0}}{{\sigma }_{CCQE}}=0.426\pm 0.032(stat.)\pm 0.035(syst.)$$ The energy dependent cross section ratio is also measured. The results are consistent with previous experiments for exclusive channels on different targets.

arXiv comment18 pages, 11 figures, submitted to PRD

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