Baryon stopping as a new probe of geometric scaling.
Baryon stopping as a new probe of geometric scaling.
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DOI：
10.1103/physrevlett.102.182301
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发表时间：
2008-11
影响因子：
8.6
通讯作者：
Y. Mehtar-Tani;G. Wolschin
中科院分区：
文献类型：
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作者：
Y. Mehtar-Tani;G. Wolschin
我们建议在CERN超级质子同步加速器、BNL相对论重离子对撞机（RHIC）和CERN大型强子对撞机（LHC）达到的能量下，利用中心相对论重离子碰撞中的净重子速度分布来探测饱和物理。在基于小耦合QCD的彩色玻璃凝聚框架内，净重子速度分布呈现几何标度。通过与sqrt[sNN=62.4 GeV和200 GeV的Au+Au碰撞的RHIC数据的比较，研究了胶子饱和状态的渐进方法。对能量为sqrt[sNN=5.52 TeV]时Pb+Pb中心碰撞的净重子速度谱和平均速度损失进行了预测。
We suggest using net-baryon rapidity distributions in central relativistic heavy-ion collisions at energies reached at the CERN Super Proton Synchrotron, BNL Relativistic Heavy-Ion Collider (RHIC), and CERN LHC in order to probe saturation physics. Within the color glass condensate framework based on small-coupling QCD, net-baryon rapidity distributions are shown to exhibit geometric scaling. In a comparison with RHIC data in Au+Au collisions at sqrt[sNN=62.4 GeV and 200 GeV the gradual approach to the gluon saturation regime is investigated. Predictions for net-baryon rapidity spectra and the mean rapidity loss in central Pb+Pb collisions at LHC energies of sqrt[sNN=5.52 TeV are made.