Particle-Yield Modification in Jetlike Azimuthal Dihadron Correlations in Pb-Pb Collisions at sqrt (s_NN)=2.76 TeV
Particle-Yield Modification in Jetlike Azimuthal Dihadron Correlations in Pb-Pb Collisions at sqrt (s_NN)=2.76 TeV
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sqrt (s_NN)=2.76 TeV 处 Pb-Pb 碰撞中射流方位双强子相关性中的粒子产率修正
DOI：
10.1103/physrevlett.108.092301
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
et al
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文献类型：
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作者：
K.Aamodt;et al
用ALICE探测器测量了与高触发粒子（）相关的带电粒子产额，其中Pb-Pb碰撞的产额相对于相同能量下的质子-质子碰撞。从方位角双强子关联中的窄喷注关联峰中提取条件触发产额。在5%的最中心碰撞中，我们观察到在远离侧具有横动量的伴随带电粒子的产额<?format ?>下降到所观察到的碰撞的约60%，而在近侧上发现20%-30%的中等增强。
The yield of charged particles associated with high-trigger particles () is measured with the ALICE detector in Pb-Pb collisions atrelative to proton-proton collisions at the same energy. The conditional per-trigger yields are extracted from the narrow jetlike correlation peaks in azimuthal dihadron correlations. In the 5% most central collisions, we observe that the yield of associated charged particles with transverse momentaon the away side <?format ?>drops to about 60% of that observed incollisions, while on the near side a moderate enhancement of 20%–30% is found.