Andrea Meucci

Relativistic descriptions of final-state interactions in charged-current quasielastic neutrino-nucleus scattering at MiniBooNE kinematics

The results of two relativistic models with different descriptions of the final-state interactions are compared with the MiniBooNE data of charged-current quasielastic cross sections. The relativistic mean field model uses the same potential for the bound and ejected nucleon wave functions. In the relativistic Greens function model, the final-state interactions are described in the inclusive scattering consistently with the exclusive scattering using the same complex optical potential. The relativistic Greens function results describe the experimental data for total cross sections without the need to modify the nucleon axial mass.

Relativistic descriptions of final-state interactions in neutral-current neutrino-nucleus scattering at MiniBooNE kinematics.

Dipartimento di Fisica Nucleare e Teorica, Universita` degli Studi di Pavia andINFN, Sezione di Pavia, via A. Bassi 6, I-27100 Pavia, Italy(Dated: October 19, 2011)The analysis of the recent neutral-current neutrino-nucleus scattering cross sections measuredby the MiniBooNE Collaboration requires relativistic theoretical descriptions also accounting forthe role of final state interactions. In this work we evaluate differential cross sections with therelativistic distorted-wave impulse-approximation and with the relativistic Green’s function modelto investigate the sensitivity to final state interactions. The role of the strange-quark content of thenucleon form factors is also discussed.

Relativistic corrections in(γ,N)knockout reactions

We develop a fully relativistic DWIA model for photonuclear reactions using the relativistic mean field theory for the bound state and the Pauli reduction of the scattering state which is calculated from a relativistic optical potential. Results for the 12C(gamma,p) and 16O(gamma,p) differential cross sections and photon asymmetries are displayed in a photon energy range between 60 and 257 MeV, and compared with nonrelativistic DWIA calculations. The effects of the spinor distortion and of the effective momentum approximation for the scattering state are discussed. The sensitivity of the model to different prescriptions for the one-body current operator is investigated. The off-shell ambiguities are large in (gamma,p) calculations, and even larger in (gamma,n) knockout.

Relativistic descriptions of final-state interactions in charged-current quasielastic antineutrino-nucleus scattering at MiniBooNE kinematics

The results of two relativistic models with different descriptions of the final-state interactions are compared with the MiniBooNE data of charged-current quasielastic cross sections. The relativistic mean field model uses the same potential for the bound and ejected nucleon wave functions. In the relativistic Greens function model, the final-state interactions are described in the inclusive scattering consistently with the exclusive scattering using the same complex optical potential. The relativistic Greens function results describe the experimental data for total cross sections without the need to modify the nucleon axial mass.

Relativistic descriptions of inclusive quasielastic electron scattering: Application to scaling and superscaling ideas

An analysis of inclusive quasielastic electron scattering is presented using different descriptions of the final-state interactions within the framework of the relativistic impulse approximation. The relativistic Greens function approach is compared with calculations based on the use of relativistic purely real mean-field potentials in the final state. Both approaches lead to a redistribution of the strength but conserving the total flux. Results for the differential cross section at different energies are presented. Scaling properties are also analyzed and discussed.

Relativistic Green's function model in charged-current quasielastic neutrino and antineutrino scattering at MINERν A kinematics

The analysis of charged-current quasielastic neutrino and antineutrino-nucleus scattering cross sections requires relativistic theoretical descriptions also accounting for the role of final-state interactions. We compare the results of the relativistic Greens function model with the data recently published by the MINER

Relativistic Green’s function model and charged-current inclusive neutrino-nucleus scattering at T2K kinematics

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Elastic and quasi-elastic electron scattering off nuclei with neutron excess

A Collaboration. The model is able to describe both MINER

Elastic and quasi-elastic electron scattering on the N=14 , 20, and 28 isotonic chains

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Relativistic descriptions of final-state interactions in charged-current neutrino-nucleus scattering at ArgoNeuT kinematics

A and MiniBooNE data.