Rapidity distribution of protons from the potential version of UrQMD model and the traditional coalescence afterburner
Rapidity distribution of protons from the potential version of UrQMD model and the traditional coalescence afterburner
复制标题
UrQMD 模型潜在版本和传统聚结加力燃烧室的质子快速分布
DOI:
10.1007/s11433-015-5768-2
复制
发表时间:
2016-01
影响因子:
6.4
通讯作者:
Shen CaiWan
中科院分区:
文献类型:
--
作者:
Li QingFeng;Wang YongJia;Wang XiaoBao;Shen CaiWan
Rapidity distributions of both E895 proton data at AGS energies and NA49 net proton data at SPS energies can be described reasonably well with a potential version of the UrQMD in which mean-field potentials for both pre-formed hadrons and confined baryons are considered, with the help of a traditional coalescence afterburner in which one parameter set for both relative distanceR0and relative momentumP0, (3.8 fm, 0.3 GeV/c), is used. Because of the large cancellation between the expansion inR0and the shrinkage inP0through the Lorentz transformation, the relativistic effect in clusters has little effect on the rapidity distribution of free (net) protons. Using a Woods-Saxon-like function instead of a pure logarithmic function as seen by FOPI collaboration at SIS energies, one can fit well both the data at SIS energies and the UrQMD calculation results at AGS and SPS energies. Further, it is found that for central Au+Au or Pb+Pb collisions at top SIS, SPS and RHIC energies, the proton fractions in clusters are about 33%, 10%, and 0.7%, respectively.
登录
查看更多内容
影响因子:
3.1
作者:
G. Torrieri
通讯作者:
G. Torrieri
影响因子:
8.6
作者:
H. Sorge
通讯作者:
H. Sorge
DOI:
10.1142/s0217732312500046
发表时间:
2010-10
期刊:
arXiv: Nuclear Theory
影响因子:
--
作者:
Qingfeng Li;Zhu-xia Li
通讯作者:
Qingfeng Li;Zhu-xia Li
影响因子:
4.4
作者:
Qingfeng Li;M. Bleicher;H. Stoecker
通讯作者:
Qingfeng Li;M. Bleicher;H. Stoecker
影响因子:
3.1
作者:
Y. Zhang;Zhu-xia Li;Chengshuang Zhou;M.B.Tsang
通讯作者:
Y. Zhang;Zhu-xia Li;Chengshuang Zhou;M.B.Tsang