Anti-nuclei and nuclei production in Pb plus Pb collisions at CERN SPS energies

被引:7
|
作者
Kolesnikov, V. I. [1 ]
机构
[1] Joint Inst Nucl Res, Dubna, Russia
来源
2007 EUROPHYSICS CONFERENCE ON HIGH ENERGY PHYSICS, PTS 1-12 | 2008年 / 110卷
关键词
D O I
10.1088/1742-6596/110/3/032010
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We present new results on production of He-3 and t obtained by the NA49 experiment in 20A, 30A, 40A and 80A GeV central Pb+Pb collisions at the CERN SPS. Transverse mass spectra and rapidity distributions for clusters measured over a large phase space domain are discussed. We observe a weak dependence of the mid-rapidity t/He-3 ratio on collision energy at SPS. The energy dependence of the total yield for He-3 is remarkably reproduced by a statistical hadron gas model. A gradual decrease of the coalescence parameters B-3 for He-3 with root sNN is observed. In addition, a measurement of the yield of anti-deuterons in Pb+Pb reactions at SPS's top energy of root sNN = 17.2 GeV is presented.
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页数:4
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