An investigation of the antinuclei and nuclei production mechanism in Pb plus Pb collisions at 158 A GeV -: art. no. 150

被引：12
|
作者：
Arsenescu, R
Baglin, C
Beck, HP
Borer, K
Bussière, A
Elsener, K
Gorodetzky, P
Guillaud, JP
Kabana, S
Klingenberg, R
Lehmann, G
Lindén, T
Lohmann, KD
Mommsen, R
Moser, U
Pretzl, K
Schacher, J
Spiwoks, R
Tuominiemi, J
Weber, M
机构：
[1] Univ Bern, Lab Hochenergiephys, CH-3012 Bern, Switzerland
[2] CNRS, IN2P3, LAPP Annecy, F-74941 Annecy Le Vieux, France
[3] CERN, SL Div, CH-1211 Geneva 23, Switzerland
[4] Coll France, PCC, F-75005 Paris, France
[5] Helsinki Inst Phys, FIN-00014 Helsinki, Finland
来源：
NEW JOURNAL OF PHYSICS | 2003年 / 5卷
关键词：
D O I：
10.1088/1367-2630/5/1/150
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the production mechanisms of p, d, t, He-3, He-4, Li-6, (p) over bar, (d) over bar and (He-3) over bar in Pb+Pb collisions at 158 A GeV measured near zero transverse momentum with the NA52 experiment at the CERN SPS. We find evidence that nuclei and antinuclei in Pb+Pb collisions are mainly produced via the coalescence mechanism out of a thermalized source of hadrons, at a time close to the thermal freeze-out of hadrons corresponding to a temperature of similar to120 MeV.
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页数：23
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