Light fragment production at CERN Super Proton Synchrotron

被引：8
作者：
Ivanov, Yu. B. [1 ,2 ,3 ]
Soldatov, A. A. [1 ]
机构：
[1] Natl Res Ctr Kurchatov Inst, Moscow 123182, Russia
[2] Natl Res Nucl Univ MEPhI Moscow Engn Phys Inst, Moscow 115409, Russia
[3] JINR, Bogoliubov Lab Theoret Phys, Dubna 141980, Russia
来源：
EUROPEAN PHYSICAL JOURNAL A | 2017年 / 53卷 / 11期
基金：
俄罗斯科学基金会;
关键词：
HEAVY-ION COLLISIONS;
D O I：
10.1140/epja/i2017-12422-3
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：
Recent data on the deutron and He-3 production in central Pb+Pb collisions at the CERN Super Proton Synchrotron (SPS) energies measured by the NA49 Collaboration are analyzed within the model of the three-fluid dynamics (3FD) complemented by the coalescence model for the light-fragment production. The simulations are performed with different equations of state - with and without deconfinement transition. It is found that scenarios with the deconfinement transition are preferable for reproduction rapidity distributions of deuterons and 3 He, the corresponding results well agree with the experimental data. At the same time the calculated transverse-mass spectra at midrapidity do not agree that nicely with the experimental data. The latter apparently indicate that coalescence coefficients should be temperature and/or momentum dependent.
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页数：7
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