σ(χc1)/σ(χc2) ratio in the kt-factorization approach

被引：11
|
作者：
Baranov, S. P. [1 ]
机构：
[1] PN Lebedev Phys Inst, Moscow 119991, Russia
来源：
PHYSICAL REVIEW D | 2011年 / 83卷 / 03期
关键词：
QCD COHERENCE; CHARMONIUM; DISTRIBUTIONS;
D O I：
10.1103/PhysRevD.83.034035
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We address the puzzle of sigma(chi(c1))/sigma(chi(c2)) ratio at the collider and fixed-target experiments. We consider several factors that can affect the predicted ratio of the production rates. In particular, we discuss the effect of chi(cJ) polarization, the effect of including next-to-leading order contributions, and the effect of probably different chi(c1) and chi(c2) wave functions.
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页数：7
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