$C_5^A$ axial form factor from bubble chamber experiments

Abstract

A careful reanalysis of both Argonne National Laboratory and Brookhaven National Laboratory data for weak single pion production is done. We consider deuteron nuclear effects and normalization (flux) uncertainties in both experiments. We demonstrate that these two sets of data are in good agreement. For the dipole parametrization of $C_5^A(Q^2)$, we obtain $C_5^A(0)=1.19\pm 0.08$, $M_A=0.94\pm 0.03$ GeV. As an application we present the discussion of the uncertainty of the neutral current 1${\pi }^0$ production cross section, important for the T2K neutrino oscillation experiment.

16 pages, 8 figures, 2 tables

References in corpus (5)

• Weak Pion Production off the Nucleon
• Testing the statistical compatibility of independent data sets
• Resonance production by neutrinos: The second resonance region
• Charged Current Single Pion Cross Section Measurement at MiniBooNE
• Experimental study of the atmospheric neutrino backgrounds for proton decay to positron and neutral pion searches in water Cherenkov detectors