Investigation of the MicroBooNE neutrino cross sections on Argon

Abstract

Experimental data of charged current neutrino cross sections on argon have recently appeared.They are classified in terms of the detected particles, such as one muon (the inclusive cross section) or one muon, zero pion and one single proton (CC0π1p) in the final states. We test our model, which allows a description of different reaction vertices, against the CC0π1p, the CC0πNp and the CC inclusive measurements. For this last channel, a new aspect is the recent availability of data in terms of the energy transfer to the nucleus, which allows a better separation of the different reaction mechanisms. Globally we find a good agreement with data and we explain the deterioration of agreement in specific kinematical conditions by the absence in our model of twopion production and other inelastic channels, more important for MicroBooNE than for T2K. We discuss also the correspondence between the quasielastic vertex and the CC0π1p measurement, as well as the dominance of the multinucleon emission channel in the difference between CC0πNp and CC0π1p data.

The SuSAv2 model for inelastic neutrino-nucleus scattering

“…This behavior is consistent with the MonteCarlo analysis for MicroBooNE [2] as well as with the recent results of Ref. [80]. Moreover, the general agreement between our calculations and data confirms also previous analyses based on simulations with GENIE presented in [2].…”

“…In a recent work by Martini et al [80] the same data were analyzed using a model based on Random Phase Approximation within the basis of a local Fermi gas calculation. While the results of this study are very similar to the ones presented here for cos θ µ 0.9, in spite of the different theoretical approach, at very forward angles a better agreement with the data is achieved around the QE peak, signalling that long-range RPA correlations, which are absent in our model, play an important role at these kinematics.…”

“…While the results of this study are very similar to the ones presented here for cos θ µ 0.9, in spite of the different theoretical approach, at very forward angles a better agreement with the data is achieved around the QE peak, signalling that long-range RPA correlations, which are absent in our model, play an important role at these kinematics. On the other hand at high values of p µ we get a better description of the data because the cal-culation [80] does not include inelastic channels beyond one-pion production.…”

SuSAv2 model for inelastic neutrino-nucleus scattering

“…In a recent work by Martini et al [80] the same data were analyzed using a model based on random phase approximation within the basis of a local Fermi gas calculation. I).…”

“…While the results of this study are very similar to the ones presented here for cos θ μ ≲ 0.9, in spite of the different theoretical approach, at very forward angles a better agreement with the data is achieved around the QE peak, signaling that long-range RPA correlations, which are absent in our model, play an important role at these kinematics. On the other hand at high values of p μ we get a better description of the data because the calculation [80] does not include inelastic channels beyond one-pion production.…”