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

被引：61
作者：
Sato, Nobuo [1 ]
Ethier, J. J. [2 ]
Melnitchouk, W. [1 ]
Hirai, M. [3 ]
Kumano, S. [4 ,5 ]
Accardi, A. [1 ,6 ]
机构：
[1] Jefferson Lab, Newport News, VA 23606 USA
[2] Coll William & Mary, Williamsburg, VA 23187 USA
[3] Nippon Inst Technol, Saitama 3458501, Japan
[4] High Energy Accelerator Res Org KEK, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan
[5] J PARC Ctr, 203-1 Shirakata, Tokai, Ibaraki 3191106, Japan
[6] Hampton Univ, Hampton, VA 23668 USA
来源：
PHYSICAL REVIEW D | 2016年 / 94卷 / 11期
基金：
日本学术振兴会;
关键词：
QUARK FLAVOR SEPARATION; E+E-ANNIHILATION; CROSS-SECTIONS; LEADING ORDER; PARTON DISTRIBUTIONS; HADRON-PRODUCTION; CHARGED HADRONS; EVOLUTION; ENERGY; PI(+/-);
D O I：
10.1103/PhysRevD.94.114004
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
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 constrained 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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页数：21
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