Charmonium production in pp collisions at PHENIX

被引：0

作者：

Hoover, AS ^{[1
]}

机构：

[1] New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA

来源：

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

关键词：

D O I：

10.1088/0954-3899/30/1/057

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：

A preliminary measurement of the J/psi production cross section in roots=200 GeV pp collisions at PHENIX is presented. Using observations of the J/psi-->mu(+)mu(-) and J/psi-->e(+)e(-) decay channels, the total production cross section for J/psi is found to be 3.8 +/- 0.6 (stat.) +/- 1.3 (sys.) mub. The measurement agrees well with predictions given by the colour evaporation model and non-relativistic QCD. Our one available data point for the differential p(t) cross section indicates that the colour octet production mechanisms dominate J/psi production at RHIC.

引用

页码：S487 / S492

页数：6

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