Measurement of K+ production cross section by 8 GeV protons using high-energy neutrino interactions in the SciBooNE detector

G. Cheng, C. Mariani, J. L. Alcaraz-Aunion, S. J. Brice, L. Bugel, J. Catala-Perez, J. M. Conrad, Z. Djurcic, U. Dore, D. A. Finley, A. J. Franke, C. Giganti, J. J. Gomez-Cadenas, P. Guzowski, A. Hanson, Y. Hayato, K. Hiraide, G. Jover-Manas, G. Karagiorgi, T. KatoriY. K. Kobayashi, T. Kobilarcik, H. Kubo, Y. Kurimoto, W. C. Louis, P. F. Loverre, L. Ludovici, K. B.M. Mahn, S. Masuike, K. Matsuoka, V. T. McGary, W. Metcalf, G. B. Mills, G. Mitsuka, Y. Miyachi, S. Mizugashira, C. D. Moore, Y. Nakajima, T. Nakaya, R. Napora, P. Nienaber, D. Orme, M. Otani, A. D. Russell, F. Sanchez, M. H. Shaevitz, T. A. Shibata, M. Sorel, R. J. Stefanski, H. Takei, H. K. Tanaka, M. Tanaka, R. Tayloe, I. J. Taylor, R. J. Tesarek, Y. Uchida, R. Van De Water, J. J. Walding, M. O. Wascko, H. B. White, M. Yokoyama, G. P. Zeller, E. D. Zimmerman

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    18 Citations (Scopus)

    Abstract

    The SciBooNE Collaboration reports K+ production cross section and rate measurements using high-energy daughter muon neutrino scattering data off the SciBar polystyrene (C8H8) target in the SciBooNE detector. The K+ mesons are produced by 8 GeV protons striking a beryllium target in Fermilab Booster Neutrino Beam line (BNB). Using observed neutrino and antineutrino events in SciBooNE, we measure d2σdpdΩ=(5. 34±0.76)mb/(GeV/c×sr) for p+Be→K++X at mean K + energy of 3.9 GeV and angle (with respect to the proton beam direction) of 3.7 degrees, corresponding to the selected K+ sample. Compared to Monte Carlo predictions using previous higher energy K+ production measurements, this measurement, which uses the NUANCE neutrino interaction generator, is consistent with a normalization factor of 0.85±0.12. This agreement is evidence that the extrapolation of the higher energy K+ measurements to an 8 GeV beam energy using Feynman scaling is valid. This measurement reduces the error on the K+ production cross section from 40% to 14%. © 2011 American Physical Society.
    Original languageEnglish
    Article number012009
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume84
    Issue number1
    DOIs
    Publication statusPublished - 28 Jul 2011

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