GLUON FRAGMENTATION INTO P-3(J) QUARKONIUM

被引：40

作者：

MA, JP

机构：

[1] Research Center for High Energy Physics, School of Physics, University of Melbourne, Parkville

来源：

NUCLEAR PHYSICS B | 1995年 / 447卷 / 2-3期

关键词：

D O I：

10.1016/0550-3213(95)00270-3

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The functions of the gluon fragmentation into P-3(J) quarkonium are calculated to order alpha(s)(2). With the recent progress in analysing quarkonium systems in QCD we show explicitly how the so-called divergence in the limit of the zero-binding energy, which is related to P-wave quarkonia, is treated correctly in the case of fragmentation functions. The obtained fragmentation functions satisfy explicitly at the order of alpha(s)(2) the Altarelli-Parisi equation and when z --> 0 they behave as z(-1) as expected. Some comments on the previous results are made.

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页码：405 / 422

页数：18

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