Measurement of Z boson production in Pb-Pb collisions at sqrt[s(NN)]=2.76 TeV with the ATLAS detector.
Measurement of Z boson production in Pb-Pb collisions at sqrt[s(NN)]=2.76 TeV with the ATLAS detector.
复制标题
使用 ATLAS 探测器测量 sqrt[s(NN)]=2.76 TeV 时 Pb-Pb 碰撞中 Z 玻色子的产生。
DOI：
10.1103/physrevlett.110.022301
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发表时间：
2013
影响因子：
8.6
通讯作者：
Aad G
中科院分区：
文献类型：
--
作者：
Aad G
ATLAS实验观测到了1995个玻色子候选者的数据，这些数据对应于2011年LHCRun at获得的积分光度。玻色子是通过双电子和双介子衰变通道重建的，背景污染小于3%。这两个渠道的结果是一致的，并被结合在一起。在统计和系统的不确定性中，每个事件玻色子的产额与Glauber模型估计的二元碰撞的数量成正比。发现玻色子相对于事件平面的方位分布的椭圆各向异性是一致的。
The ATLAS experiment has observed 1995boson candidates in data corresponding toof integrated luminosity obtained in the 2011 LHCrun at. Thebosons are reconstructed via dielectron and dimuon decay channels, with a background contamination of less than 3%. Results from the two channels are consistent and are combined. Within the statistical and systematic uncertainties, the per-eventboson yield is proportional to the number of binary collisions estimated by the Glauber model. The elliptic anisotropy of the azimuthal distribution of theboson with respect to the event plane is found to be consistent with zero.