First Measurement of ν_μ and ν_e Events in an Off-Axis Horn-Focused Neutrino Beam

P. Adamson , A. A. Aguilar-Arevalo , C. E. Anderson , A. O. Bazarko , M. Bishai , S. J. Brice , B. C. Brown , L. Bugel

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J. Cao B. C. Choudhary L. Coney J. M. Conrad D. C. Cox A. Curioni Z. Djurcic D. A. Finley B. T. Fleming R. Ford H. R. Gallagher F. G. Garcia G. T. Garvey C. Green J. A. Green D. Harris T. L. Hart E. Hawker J. Hylen R. Imlay R. A. Johnson G. Karagiorgi P. Kasper T. Katori T. Kobilarcik S. Kopp I. Kourbanis S. Koutsoliotas E. M. Laird S. K. Linden J. M. Link Y. Liu L. Loiacono W. C. Louis A. Marchionni K. B. M. Mahn W. Marsh G. McGregor M. D. Messier W. Metcalf P. D. Meyers F. Mills G. B. Mills J. Monroe C. D. Moore J. K. Nelson R. H. Nelson V. T. Nguyen P. Nienaber J. A. Nowak S. Ouedraogo R. B. Patterson Z. Pavlovic D. Perevalov C. C. Polly E. Prebys J. L. Raaf H. Ray B. P. Roe A. D. Russell V. Sandberg R. Schirato D. Schmitz M. H. Shaevitz F. C. Shoemaker W. Smart D. Smith M. Sodeberg M. Sorel P. Spentzouris I. Stancu R. J. Stefanski M. Sung H. A. Tanaka R. Tayloe M. Tzanov P. Vahle R. Van de Water B. Viren M. O. Wascko D. H. White M. J. Wilking H. J. Yang F. X. Yumiceva G. P. Zeller E. D. Zimmerman R. Zwaska

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classification ✦ hep-ex

keywords numibeamneutrinooff-axisdetectorfirstinteractionsminiboone

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We report the first observation of off-axis neutrino interactions in the MiniBooNE detector from the NuMI beamline at Fermilab. The MiniBooNE detector is located 745 m from the NuMI production target, at 110 mrad angle ($6.3^{\circ}$) with respect to the NuMI beam axis. Samples of charged current quasi-elastic $\nu_{\mu}$ and $\nu_e$ interactions are analyzed and found to be in agreement with expectation. This provides a direct verification of the expected pion and kaon contributions to the neutrino flux and validates the modeling of the NuMI off-axis beam.

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First Measurement of ν_μ and ν_e Events in an Off-Axis Horn-Focused Neutrino Beam

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