%0 Journal Article %T Measurement of the neutrino component of an antineutrino beam observed by a nonmagnetized detector %A MiniBooNE Collaboration (Aguilar-Arevalo, A. A. et al %A Sorel, M. %J Physical Review D %D 2011 %V 84 %N 7 %I Amer Physical Soc %@ 1550-7998 %G English %F MiniBooNECollaborationAguilar-Arevalo+Sorel2011 %O WOS:000296886900001 %O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=796), last updated on Thu, 01 Dec 2011 15:46:22 +0000 %X Two methods are employed to measure the neutrino flux of the antineutrino-mode beam observed by the MiniBooNE detector. The first method compares data to simulated event rates in a high-purity nu(mu)-induced charged-current single pi(+) (CC1 pi(+)) sample while the second exploits the difference between the angular distributions of muons created in nu(mu) and nu(mu) charged-current quasielastic (CCQE) interactions. The results from both analyses indicate the prediction of the neutrino flux component of the predominately antineutrino beam is overestimated-the CC1 pi(+) analysis indicates the predicted nu(mu) flux should be scaled by 0: 76 +/- 0: 11, while the CCQE angular fit yields 0: 65 +/- 0: 23. The energy spectrum of the flux prediction is checked by repeating the analyses in bins of reconstructed neutrino energy, and the results show that the spectral shape is well-modeled. These analyses are a demonstration of techniques for measuring the neutrino contamination of antineutrino beams observed by future nonmagnetized detectors. %R 10.1103/PhysRevD.84.072005 %U http://arxiv.org/abs/1102.1964 %U https://doi.org/10.1103/PhysRevD.84.072005 %P 072005-14pp