New determination of the $N$-$Î(1232)$ axial form factors from weak pion production and coherent pion production off nuclei at T2K and MiniBooNE energies revisited
arXiv:1012.4260 · doi:10.1063/1.3644297
Abstract
We re-evaluate our model predictions in Phys. Rev. D 79, 013002 (2009) for different observables in neutrino induced coherent pion production. This comes as a result of the new improved fit to old bubble chamber data of the dominant axial C_5^A nucleon-to-Delta form factor. We find an increase of 20%-30% in the values for the total cross sections. Uncertainties induced by the errors in the determination of C_5^A are computed. Our new results turn out to be compatible within about $1Ï$ with the former ones. We also stress the existing tension between the recent experimental determination of the Ï(CC coh Ï^+)}/Ï(NC coh Ï^0)} $ ratio by the SciBooNE Collaboration and the theoretical predictions.
3 latex pages, 1 figure. Talk given at the NuFact10 Conference