Speaker
Dr
Artur Ankowski
(University of Wroclaw)
Description
In neutrino scattering off nucleus, the uncertainties of the cross section come from the parameterization of the axial form factor and from nuclear effects. The approach currently applied in neutrino physics is to extract information about the elementary cross section (i.e. axial form factor) from scattering off nuclei. To make it possible, we have to describe nuclear effects in the most accurate way.
In the typical approach to modeling of ~1-GeV neutrino scattering, one assumes that an interacting probe sees the nucleus as a collection of independent nucleons. Without additional assumptions, i.e. in the impulse approximation, the nucleus cross section is a product of the nucleon cross section and the so-called spectral function, describing the distribution of nucleon momenta and energies.
As was shown [Phys. Rev. C 77 044311 (2008)], some electron-scattering data correspond kinematically to neutrino interactions, what allows for precise tests of the accuracy of the used description of nuclear effects. In this indirect way, I want to show accuracy of the spectral functions of argon and calcium in modelling neutrino interactions in quasielastic and delta-production region. Moreover, I will present when the impulse approximation breaks down and what are the consequences of this fact for neutrino observables.
Primary author
Dr
Artur Ankowski
(University of Wroclaw)
