May 18 – 22, 2009
Sitges (Barcelona) Spain
Europe/Madrid timezone

Measurement of inclusive p0 production in the charged current interactions of neutrinos in a 1.3 GeV wide band beam in the K2K-Scibar detector

May 19, 2009, 6:30 PM
Sitges (Barcelona) Spain

Sitges (Barcelona) Spain

Palau Maricel Sitges (Barcelona) Spain
Poster Single pion production Poster session and cocktail reception


camillo mariani (Columbia university)


In this poster we report on the measurement of the rate of the inclusive π production induced by charged-current neutrino interactions in the K2K SciBar detector, 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 π0 events with two reconstructed photons. We find that the cross section ratio of the inclusive π0 production to the charged-current quasi-elastic cross section averaged over the K2K neutrino beam is: σCCp0 / σCCQE = 0.443 ± 0.033(stat.) ± 0.036(syst.) that shows an excess of (49 ± 16)% (statistical and systematic errors added in quadrature) with respect to the prediction of our reference Monte Carlo simulation. Taking the single pion contribution from the charged-current single pi+ production measurement, the results above corresponds to a measurement of the charged-current deep inelastic cross section σCC−DIS / σCCQE = 0.381 ± 0.013(stat.) ± 0.046(syst.)

Primary author

camillo mariani (Columbia university)

Presentation materials