Two-pion Bose-Einstein correlations in Pb-Pb collisions at 2.76 TeV with ALICE

被引：1

作者：

Mercado, J. ^{[1
]}

机构：

[1] Heidelberg Univ, D-69120 Heidelberg, Germany

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2011年 / 38卷 / 12期

关键词：

INTERFEROMETRY; PHYSICS;

D O I：

10.1088/0954-3899/38/12/124056

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：

We present the first measurement of pion source radii in Pb-Pb collisions at the Large Hadron Collider. The radii were obtained by analyzing the Bose-Einstein enhancement in two-pion correlation functions. Like at lower energies, the radii drop with increasing transverse momentum, indicating the presence of collective expansion. In absolute terms, all three radii (R-out, R-side, R-long) are larger than at RHIC, roughly consistent with a linear scaling with the cube root of the particle multiplicity.

引用

页数：5

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