Electroweak nuclear response at moderate momentum transfer

Abstract

We discuss the convergence of the expansion of the nuclear electroweak current in powers of |k|/M, where M is the nucleon mass and k denotes either the momentum transfer or the momentum of the struck nucleon. We have computed the electron and neutrino scattering cross sections off uniform nuclear matter at equilibrium density using correlated wave functions and the cluster expansion formalism. The results of our work suggest that the proposed approach provides accurate estimates of the measured electron scattering cross sections. On the other hand, the description of the current based on the widely used leading-order approximation does not appear to be adequate, even at momentum transfer as low as 300 MeV.

5 pages, 3 figures

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• The relativistic Green's function model in charged-current quasielastic neutrino and antineutrino scattering at MINER$\nu$A kinematics
• The Relativistic Green's function model and charged-current inclusive neutrino-nucleus scattering at T2K kinematics
• Final-state interactions effects in neutral-current neutrino and antineutrino cross sections at MiniBooNE kinematics
• Relativistic descriptions of final-state interactions in charged-current neutrino-nucleus scattering at ArgoNeuT kinematics
• Nuclear effects in charged-current quasielastic neutrino-nucleus scattering
• Neutrino-Nucleus Interactions at the LBNF Near Detector