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arXiv 1105.2871hep-ex
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在SciBooNE探测器上利用高能中微子相互作用测量8个GeV质子的K+产生截面

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,… 展开作者

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

摘要:

SciBooNE协作报告了在SciBooNE探测器中使用SciBar聚苯乙烯(C8 H8)靶的高能子μ子中微子散射数据进行的K+产生截面和速率测量。K ~+介子是由8 GeV质子轰击费米实验室助推中微子束线(BNB)中的铍靶产生的。利用在SciBooNE中观测到的中微子和反中微子事件,我们测量了p + Be -> K+ + X的d2σ/dpdΩ =(5.34 \times 0.76)mb/(GeV/c \times sr),平均K+能量为3.9 GeV,角度(相对于质子束方向)为3.7度,对应于所选的K+样品。与使用先前的更高能量K+产生测量的蒙特卡罗预测相比,使用NUANCE中微子相互作用发生器的这种测量与0.85 \times 0.12的归一化因子一致。这一协议是证据,外推的更高的能量K+测量到一个8 GeV的光束能量使用费曼标度是有效的。该测量将K+产生截面上的误差从40%减小到14%。

英文摘要:

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%.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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