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Measurement of single charged pion production in the charged-current interactions of neutrinos in a 1.3 GeV wide band beam

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 Added by Michel Sorel
 Publication date 2008
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and research's language is English




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Single charged pion production in charged-current muon neutrino interactions with carbon is studied using data collected in the K2K long-baseline neutrino experiment. The mean energy of the incident muon neutrinos is 1.3 GeV. The data used in this analysis are mainly from a fully active scintillator detector, SciBar. The cross section for single $pi^{+}$ production in the resonance region ($W<2$ GeV/$c^2$) relative to the charged-current quasi-elastic cross section is found to be 0.734 $^{+0.140}_{-0.153}$. The energy-dependent cross section ratio is also measured. The results are consistent with a previous experiment and the prediction of our model.



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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 $$frac{sigma_{CCpi^0}}{sigma_{CCQE}}=0.426pm0.032(stat.)pm0.035(syst.)$$ The energy dependent cross section ratio is also measured. The results are consistent with previous experiments for exclusive channels on different targets.
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