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arXiv 1609.00899hep-phhep-exnucl-th
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单包体$e^+ e^-$湮灭碎裂函数的首次Monte Carlo分析

First Monte Carlo analysis of fragmentation functions from single-inclusive $e^+ e^-$ annihilation

N. Sato, J. J. Ethier, W. Melnitchouk, M. Hirai, S. Kumano, A. Accardi

摘要:

我们进行了第一次迭代蒙特卡罗(IMC)分析的碎裂功能的所有可用的数据从单包容性$e^+ e^-$湮灭成π介子和K介子的约束。IMC方法消除了传统分析中基于单次拟合的潜在偏差,该方法通过固定不受数据约束的参数引入,并提供了统计上严格的不确定性测定。我们的分析揭示了具体功能的碎裂功能,使用新的IMC方法和以前的分析,特别是轻夸克和奇怪的夸克碎裂到K介子。

英文摘要:

We perform the first iterative Monte Carlo (IMC) analysis of fragmentation functions constrained by all available data from single-inclusive $e^+ e^-$ annihilation into pions and kaons. The IMC method eliminates potential bias in traditional analyses based on single fits introduced by fixing parameters not well contrained by the data and provides a statistically rigorous determination of uncertainties. Our analysis reveals specific features of fragmentation functions using the new IMC methodology and those obtained from previous analyses, especially for light quarks and for strange quark fragmentation to kaons.

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