Next-to-leading order calculation of the color-octet 3S1 gluon fragmentation function for heavy quarkonium

被引：55

作者：

Braaten, E

Lee, J ^{[1
]}

机构：

[1] Univ Hamburg, Inst Theoret Phys 2, D-22761 Hamburg, Germany

[2] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

来源：

NUCLEAR PHYSICS B | 2000年 / 586卷 / 1-2期

关键词：

quarkonium; fragmentation; fragmentation function; nonrelativistic QCD (NRQCD); color-octet; next-to-leading order;

D O I：

10.1016/S0550-3213(00)00396-5

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 short-distance coefficients for the color-octet S-3(1) term in the fragmentation function for a gluon to split into heavy quarkonium states is calculated to order alpha(s)(2). The gauge-invariant definition of the fragmentation function by Collins and Soper is employed. Ultraviolet divergences are removed using the MS renormalization procedure. The longitudinal term in the fragmentation function agrees with a previous calculation by Beneke and Rothstein. The next-to-leading order correction to the transverse term disagrees with a previous calculation, (C) 2000 Elsevier Science B,V. All rights reserved.

引用

页码：427 / 439

页数：13

共 15 条

[1] psi' Polarization as a test of colour octet quarkonium production [J].