O. Buss

One pion production in neutrino reactions: Including nonresonant background

We investigate neutrino-induced one pion production on nucleons. The elementary neutrino-nucleon cross section is calculated as the sum of the leading Delta pole diagram and several background diagrams obtained within the nonlinear sigma model. This approach does not introduce any new adjustable parameters, which allows unambiguous predictions for the observables. Considering electroproduction experiments as benchmark, the model is shown to be applicable up to pion-nucleon invariant mass W<1.4 GeV and provides a good accuracy. With respect to the total one pion cross section, the model predicts the background at the level of 10% for the p{pi}{sup +}, 30% for p{pi}{sup 0}, and 50% for n{pi}{sup +} final states. The results are compared with experimental data for various differential cross sections. Distributions with respect to muon-nucleon and muon-pion invariant masses are presented for the first time. The model describes the data quite well, with the discrepancies being of the same order as those between different data sets.

Neutrino induced pion production at MiniBooNE and K2K energies

We investigate charged and neutral current neutrino‐induced incoherent pion production off nuclei within the GiBUU model at energies relevant for the MiniBooNE and K2K experiments. Special attention is paid to the entanglement between measured CCQE and CC1π+ cross sections. We further give predictions and compare to recent data measured at MiniBooNE.

Pion production in neutrino interactions with nuclei

Neutrino-induced pion production on nuclear targets is the major inelastic channel in all present-day neutrino-oscillation experiments. It has to be understood quantitatively in order to be able to reconstruct the neutrino-energy at experiments such as MiniBooNE or K2K and T2K. We report here results of cross section calculations for both this channel and for quasielastic scattering within the semiclassical GiBUU method. This methods contains scattering, both elastic and inelastic, absorption and side-feeding of channels all in a unitary, common theoretical framework and code. We find that charged current quasielastic scattering (CCQE) and

Neutrino interactions with nuclei

1 \pi

Quasielastic Scattering at MiniBooNE Energies

production are closely entangled in actual experiments, due to final state interactions of the scattered nucleons on one hand and of the

Neutrinos and duality

\Delta

Neutrino scattering with nuclei: Theory of low energy nuclear effects and its applications

resonances and pions, on the other hand. We discuss the uncertainties in the elementary pion production cross sections from ANL and BNL. We find the surprising result that the recent

Inclusive results for electron and photon scattering in the resonance region

1 \pi

Exciting pions in nuclei: DCX and Electroproduction in the resonance region

production cross section data from MiniBooNE are well described by calculations without any FSI. For higher energies we study the validity of the Bloom-Gilman quark-hadron duality for both electron- and neutrino-induced reactions. While this duality holds quite well for nucleon targets, for nuclear targets the average resonance contributions to the structure function

Hadronic transport approach to neutrino nucleus scattering: the Giessen BUU model and its validation

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