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arXiv · 1105.2871

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

The SciBooNE Collaboration·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·a J. J. Gomez-Cadenas·P. Guzowski·A. Hanson·Y. Hayato·K. Hiraide·G. Jover-Manas·G. Karagiorgi·T. Katori·Y. 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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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 d2σ/dpdΩ = (5.34 \times 0.76) mb/(GeV/c \times 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\times0.12. 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%.

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The SciBooNE Collaboration, 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, a J. J. Gomez-Cadenas, P. Guzowski, A. Hanson, Y. Hayato, K. Hiraide, G. Jover-Manas, G. Karagiorgi, T. Katori, Y. 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. 2011-07-29. Measurement of K+ production cross section by 8 GeV protons using high energy neutrino interactions in the SciBooNE detector. https://doi.org/10.1103/physrevd.84.012009

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