First Monte Carlo analysis of fragmentation functions from single-inclusive e+e- annihilation FIRST MONTE CARLO ANALYSIS of FRAGMENTATION ... NOBUO SATO et al.
Journal
Physical Review D
Journal Volume
94
Journal Issue
11
Date Issued
2016
Author(s)
Ethier J.J
Melnitchouk W
Hirai M
Kumano S
Accardi A
Jefferson Lab Angular Momentum Collaboration
Abstract
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. © 2016 American Physical Society.
Type
journal article