Charged lepton production from iron induced by atmospheric neutrinos
Department of Physics, Aligarh Muslim University, 202 002, Aligarh, India
Accepted: 12 April 2005
Published online: 8 June 2005
The charged current lepton production induced by neutrinos in 56Fe nuclei has been studied. The calculations have been done for the quasielastic as well as the inelastic reactions assuming Δ-dominance and take into account the effect of Pauli blocking, Fermi motion and the renormalization of weak transition strengths in the nuclear medium. The quasielastic production cross-sections for lepton production are found to be strongly reduced due to nuclear effects, while there is about 10% reduction in the inelastic cross-sections in the absence of the final-state interactions of the pions. The numerical results for the momentum and angular distributions of the leptons averaged over the various atmospheric-neutrino spectra at the Soudan and Gran Sasso sites have been presented. The effect of nuclear-model dependence and the atmospheric-flux dependence on the relative yield of μ to e has been studied and discussed.
PACS: 25.30.Pt Neutrino scattering – / 13.15.+g Neutrino interactions – / 23.40.Bw Weak-interaction and lepton (including neutrino) aspects – / 21.60.Jz Hartree-Fock and random-phase approximations –
© Società Italiana di Fisica and Springer-Verlag, 2005