Exploring early parton momentum distribution with the ridge from the near-side jet

被引：8
|
作者：
Wong, Cheuk-Yin [1 ]
机构：
[1] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37830 USA
来源：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2008年 / 35卷 / 10期
关键词：
D O I：
10.1088/0954-3899/35/10/104085
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：
In a central nucleus-nucleus collision at high energies, medium partons kicked by a near-side jet acquire a momentum along the jet direction and subsequently materialize as the observed ridge particles. They carry direct information on the early parton momentum distribution which can be extracted by using the ridge data for central AuAu collisions at root(NN)-N-S = 200 GeV. The extracted parton momentum distribution has a thermal- like transverse momentum distribution but a non- Gaussian, relatively flat rapidity distribution at mid-rapidity with sharp kinematic boundaries at large rapidities that depend on the transverse momentum.
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页数：6
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