Pion interferometry of sqrt s
Pion interferometry of sqrt s
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DOI：
10.1103/physrevlett.87.082301
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发表时间：
2001-07
影响因子：
8.6
通讯作者：
C. Adler;Z. Ahammed;C. Allgower;J. Amonett;B. Anderson;M. Anderson;G. S. Averichev;J. Balewski
中科院分区：
文献类型：
--
作者：
C. Adler;Z. Ahammed;C. Allgower;J. Amonett;B. Anderson;M. Anderson;G. S. Averichev;J. Balewski
$\sqrt{s_{NN}} = 130$ GeV 时 Au+Au 碰撞中的二π介子相关函数已由 STAR（RHIC 螺线管跟踪器）探测器测量到。通过拟合相关性提取的源大小随着事件多重性的增加而增加，并随着横向动量的增加而减少。没有观察到异常大的尺寸或发射持续时间，这些尺寸或发射持续时间被认为是夸克-胶子等离子体形成和再强子化的信号。 HBT 参数在 $\sqrt{s_{NN}}$ 的较大范围内显示出较弱的能量依赖性。
Two-pion correlation functions in Au+Au collisions at $\sqrt{s_{NN}} = 130$ GeV have been measured by the STAR (Solenoidal Tracker at RHIC) detector. The source size extracted by fitting the correlations grows with event multiplicity and decreases with transverse momentum. Anomalously large sizes or emission durations, which have been suggested as signals of quark-gluon plasma formation and rehadronization, are not observed. The HBT parameters display a weak energy dependence over a broad range in $\sqrt{s_{NN}}$.