Abstract
Experimental investigations of neutrino properties, using neutrino beams generated at accelerators facilities, necessitate a detailed and precise knowledge of neutrinonucleus reaction mechanisms. In the energy region of nuclear quasi-elastic scattering, pion-production reactions constitute an important background process. A theoretical understanding of these processes is then required in order to correctly determine the produced neutrino energy spectrum. In the first stage of our research project, we study neutrino induced pion-production off deuterons. The choice of the deuteron minimizes the complications of the nuclear dynamics associated with larger nuclear systems. We evaluate the pion-production reaction near threshold using heavy baryon chiral perturbation theory.
Highlights
Neutrino beams generated in accelerator-based neutrino experiments [1] are not mono-energetic. Their energy spectrum spans from a few hundred MeV to several GeV and the neutrino energy spectrum is reconstructed from final state observations of neutrino-nucleus reactions
The reconstruction procedure relies on an accurate theoretical understanding of the involved neutrino-nucleus reactions along with a quantitative evaluation of the associated cross-sections
We focus on the neutrino induced pion-production reactions off light nuclei near threshold, where an effective field theory approach is applicable
Summary
Neutrino beams generated in accelerator-based neutrino experiments [1] are not mono-energetic. The relevant reactions occurring in this energy regime are nuclear quasi-elastic scattering, pion-productions and deep inelastic scattering. Theoretical studies of neutrino scattering off light nuclei (A ≤ 16) in the quasi-elastic regime [3,4,5,6], show that many-body terms in both the nuclear Hamiltonian and electro-weak currents provide sizable, non-negligible contributions to the evaluated cross sections.
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