Hadronization in heavy-ion collisions:: recombination or fragmentation?

被引：10

作者：

Fries, RJ

Müller, B

Nonaka, C

Bass, SA

机构：

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

[2] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2004年 / 30卷 / 01期

关键词：

D O I：

10.1088/0954-3899/30/1/025

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We show that hadron production in relativistic heavy-ion collisions at transverse momenta larger than 2 GeV/c can be explained by the competition of two different hadronization mechanisms. Above 5 GeV/c hadron production can be described by fragmentation of partons that are created perturbatively. Below 5 GeV/c recombination of partons from the dense and hot fireball dominates. This can explain some of the surprising features of RHIC data such as the constant baryon-to-meson ratio of about one and the small nuclear suppression for baryons between 2 to 4 GeV/c.

引用

页码：S223 / S228

页数：6

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