Measurement of K+ production cross section by 8 GeV protons using high energy neutrino interactions in the SciBooNE detector
The SciBooNE Collaboration · Cheng, G. · Mariani, C. · Alcaraz-Aunion, J. L. · Brice, S. J. · Bugel, L. · Catala-Perez, J. · Conrad, J. M. · Djurcic, Z. · Dore, U. · Finley, D. A. · Franke, A. J. · Giganti, C. · Gomez-Cadenas, a J. J. · Guzowski, P. · Hanson, A. · Hayato, Y. · Hiraide, K. · Jover-Manas, G. · Karagiorgi, G. · Katori, T. · Kobayashi, Y. K. · Kobilarcik, T. · Kubo, H. · Kurimoto, Y. · Louis, W. C. · Loverre, P. F. · Ludovici, L. · Mahn, K. B. M. · Masuike, S. · Matsuoka, K. · McGary, V. T. · Metcalf, W. · Mills, G. B. · Mitsuka, G. · Miyachi, Y. · Mizugashira, S. · Moore, C. D. · Nakajima, Y. · Nakaya, T. · Napora, R. · Nienaber, P. · Orme, D. · Otani, M. · Russell, A. D. · Sanchez, F. · Shaevitz, M. H. · Shibata, T. -A. · Sorel, M. · Stefanski, R. J. · Takei, H. · Tanaka, H. -K. · Tanaka, M. · Tayloe, R. · Taylor, I. J. · Tesarek, R. J. · Uchida, Y. · Van de Water, R. · Walding, J. J. · Wascko, M. O. · White, H. B. · Yokoyama, M. · Zeller, G. P. · Zimmerman, E. D.
الأصل · EN
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 × 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%.
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