Muon-neutrino carbon charged-current interaction near the muon threshold

D. D. Koetke et al.
Phys. Rev. C 46, 2554 – Published 1 December 1992
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Abstract

A measurement of the muon-neutrino carbon charged-current cross section, C12(νμ,μ)X, was performed using the in-flight pion-decay neutrino source at the LAMPF accelerator. At an average interacting neutrino energy of 202 MeV an inclusive cross section of (15.9±2.6±3.7)×1039 cm2 was measured. This value is in best agreement with the Fermi-gas model and is in disagreement with a previous experiment and subsequent calculations that yielded substantially lower cross sections. However, the muon energy spectrum shows a marked depletion of events at high energies compared to the Fermi-gas model. From a small sample of events in which the final-state nucleus was in the ground state of N12, a cross section for the reaction C12(νμ,μ)12N(g.s.) of (1.7±0.8±0.3)×1039 cm2 or about 11±5 % of the total event rate was obtained.

  • Received 5 May 1992

DOI:https://doi.org/10.1103/PhysRevC.46.2554

©1992 American Physical Society

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Vol. 46, Iss. 6 — December 1992

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