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arXiv 1509.04830nucl-exnucl-th
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动能为2.83 GeV的质子-核碰撞中K介子对的产生

Kaon pair production in proton-nucleus collisions at 2.83 GeV kinetic energy

Yu. T. Kiselev, M. Hartmann, A. Polyanskiy, E. Ya. Paryev, S. Barsov, M. Buescher, S. Dymov, R. Gebel, V. Hejny, A. Kacharava, I. Keshelashvili, B. Lorentz, Y. … 展开作者

Yu. T. Kiselev, M. Hartmann, A. Polyanskiy, E. Ya. Paryev, S. Barsov, M. Buescher, S. Dymov, R. Gebel, V. Hejny, A. Kacharava, I. Keshelashvili, B. Lorentz, Y. Maeda, S. Merzliakov, S. Mikirtytchiants, H. Ohm, V. Serdyuk, A. Sibirtsev, V. Y. Sinitsyna, H. J. Stein, H. Stroeher, S. Trusov, Yu. Valdau, C. Wilkin, P. Wuestner, Q. J. Ye

摘要:

用COSY-ANKE磁谱仪研究了2.83 GeV动能质子在C、Cu、Ag和Au靶上产生的非φ K+K-对。在0.2- 0.9 GeV/c范围内测量了小角度下微分截面与K动量的关系。与详细的模型计算的数据的比较表明,在正常的核物质密度和0.5 GeV/c的平均动量下,吸引K-核势约为-60 MeV。然而,这种方法在再现低K动量时所观察到的小截面方面有困难.

英文摘要:

The production of non-phi K+K- pairs by protons of 2.83 GeV kinetic energy on C, Cu, Ag, and Au targets has been investigated using the COSY-ANKE magnetic spectrometer. The K- momentum dependence of the differential cross section has been measured at small angles over the 0.2--0.9 GeV/c range. The comparison of the data with detailed model calculations indicates an attractive K- -nucleus potential of about -60 MeV at normal nuclear matter density at a mean momentum of 0.5 GeV/c. However, this approach has difficulty in reproducing the smallness of the observed cross sections at low K- momenta.

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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