Multiplicity distributions in e+e- annihilation into hadrons and pure birth branching processes

被引：5
|
作者：
Tchikilev, OG [1 ]
机构：
[1] Protvino High Energy Phys Inst, Protvino 142284, Russia
来源：
PHYSICS LETTERS B | 2000年 / 471卷 / 04期
关键词：
D O I：
10.1016/S0370-2693(99)01411-2
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Recursive solution for a general homogeneous in time pure birth branching process with simultaneous production of any number of "particles" and with continuous evolution parameter is given. Calculational algorithm based on the use of Koenigs function and functional Schrodinger equation is described. It is shown that multiplicity distributions in e(+)e(-) annihilation into hadrons for c.m. energies up to 189 GeV are well described by the modified negative binomial distribution, explained by simple pure birth branching process without multiple simultaneous "particle" production. The energy dependence of the evolution parameter is also discussed. (C) 2000 Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码：400 / 405
页数：6
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