Anomalous dimensions of the double parton fragmentation functions

被引：21

作者：

Fleming, Sean ^{[1
]}

Leibovich, Adam K. ^{[2
]}

Mehen, Thomas ^{[3
]}

Rothstein, Ira Z. ^{[4
]}

机构：

[1] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA

[2] Univ Pittsburgh, Pittsburgh Particle Phys Astrophys & Cosmol Ctr P, Dept Phys & Astron, Pittsburgh, PA 15217 USA

[3] Duke Univ, Dept Phys, Durham, NC 27708 USA

[4] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA

来源：

PHYSICAL REVIEW D | 2013年 / 87卷 / 07期

基金：

美国国家科学基金会;

关键词：

PSI;

D O I：

10.1103/PhysRevD.87.074022

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Double parton fragmentation is a process in which a pair of partons produced in the short-distance process hadronize into the final state hadron. This process is important for quarkonium production when the transverse momentum is much greater than the quark mass. Resummation of logarithms of the ratio of these two scales requires the evolution equations for double parton fragmentation functions (DPFF). In this paper we complete the one-loop evaluation of the anomalous dimensions for the DPFF. We also consider possible mixing between the DPFF and single parton power suppressed gluon fragmentation and show that such effects are subleading. DOI: 10.1103/PhysRevD.87.074022

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页数：6

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