Measurement of the νμ and [formula omitted] nucleon charged-current total cross sections, and the ratio of νμ neutron to ν μ proton charged-current total cross sections

Abstract

The total ν μ and ν μ nucleon charged-current cross sections have been measured in BEBC filled with deuterium and exposed to the wide-band neutrino and antineutrino beams at the CERN-SPS. Assuming a linear energy dependence for the cross sections, σ = aE(− ν , we obtained the coefficients a ν N = 0.62 ± 0.05 and a ν N = 0.33 ± 0.03 (in units of 10 −38 cm 2/GeV) , where the quoted error is mainly systematic. The ratio of the cross sections is σ ν N /σ ν N = 0.53 ± 0.03 . We also determined the ratio of the charged-current cross section for neutrino interactions on neutrons and protons R = σ νn / σ νp = 2.10 ± 0.08 (statistical) ±0.22 (sysetmatic). The dependence of R on the variables x, y and E ν is discussed.