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arXiv 1102.2305hep-ph
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K介子碎裂函数的模型无关提取

On model independent extraction of the Kaon Fragmentation Functions

S. Albino, E. Christova, E. Leader

摘要:

本文提出了一种与模型无关的方法,它允许在k介子包含的三种不同产生过程:e+e湮灭、pp碰撞和1 N半包含DIS中,唯一地确定k介子自由场的非单态组合(D_u-D_d)^{K^++K^-},只使用了C和SU(2)不变性,而没有对自由场和概率密度函数作任何假设,结果在QCD中任何顺序都成立。以这种方式获得的非单重态将允许测试全局拟合分析中常用的假设并测试普适性。将该方法应用于e+e- \to K+X中的K介子产生数据,K=K^ \pm,K ^0_s,(D_u-D_d)^{K^++K^-},无需任何假设。这一结果相比,现有的参数化,在全球拟合分析。

英文摘要:

We present a model independent approach to FFs, which allows to determine uniquely the non-singlet combination (D_u-D_d)^{K^++K^-} of the kaon FFs, independently in the three different processes of kaon inclusive production: e+e- annihilation, pp-collisions and lN semi-inclusive DIS. Only C and SU(2) invariances are used and no assumptions on FFs and PDFs, the result holds in any order in QCD. The non-singlets obtained in this way, would allow to test the commonly used assumptions in global fit analysis and to test universality. This method is applied to kaon production data in e+e-\to K+X,\,K=K^\pm, K^0_s and (D_u-D_d)^{K^++K^-} is obtained without any assumptions. This result is compared to the existing parametrizations, obtained in global fit analysis.

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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