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Bodek, A; Sarica, U; Naples, D; Ren, L
The European physical journal. C, Particles and fields, 04/2012, Letnik: 72, Številka: 4Journal Article
We investigate the “low-ν” method (developed by the CCFR/NUTEV collaborations) to determine the neutrino flux in a wide band neutrino beam at very low energies, a region of interest to neutrino oscillations experiments. Events with low hadronic final state energy \(\nu<\nu_{\mathrm{cut}}\) (of 1, 2 and 5 GeV) were used by the MINOS collaboration to determine the neutrino flux in their measurements of neutrino (νμ) and antineutrino (\(\bar{\nu}_{\mu}\)) total cross sections. The lowest νμ energy for which the method was used in MINOS is 3.5 GeV, and the lowest \(\bar {\nu}_{\mu}\) energy is 6 GeV. At these energies, the cross sections are dominated by inelastic processes. We investigate the application of the method to determine the neutrino flux for νμ, \(\bar{\nu}_{\mu}\) energies as low as 0.7 GeV where the cross sections are dominated by quasielastic scattering and Δ(1232) resonance production. We find that the method can be extended to low energies by using \(\nu_{\mathrm{cut}}\) values of 0.25 and 0.50 GeV, which are feasible in fully active neutrino detectors such as MINERvA.
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