Global analysis of hadron-production data in e^+ e^- annihilation for determining fragmentation functions
Abstract
Fragmentation functions of pion, kaon, and nucleon are determined by global analyses of hadron-production data in annihilation. It is particularly important that uncertainties of the fragmentation functions are estimated for the first time. We found that light-quark and gluon fragmentation functions have large uncertainties, so that one should be careful in using these functions for hadron-production processes in heavy-ion collisions and lepton scattering. The analysis is extended to possible exotic hadron search by fragmentation functions. We found that internal structure of , such as or tetraquark configuration, can be determined by noting differences between favored and disfavored fragmentation functions.
Cite
@article{arxiv.0709.2457,
title = {Global analysis of hadron-production data in e^+ e^- annihilation for determining fragmentation functions},
author = {M. Hirai and S. Kumano and T. -H. Nagai and M. Oka and K. Sudoh},
journal= {arXiv preprint arXiv:0709.2457},
year = {2007}
}
Comments
3 pages, 3 eps figures, to appear in the proceedings of INPC2007 (International Nuclear Physics Conference), Tokyo, Japan, June 3-8, 2007