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J/psi normal and anomalous suppressions in a hadron and string cascade model
Ben-Hao, S; Faessler, A; An, T; Waindzoch, T; Fuchs, C; Wang, ZS; Hui, W; Tai A(台安)
1999
发表期刊JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
卷号25期号:6页码:1123-1133
通讯作者Univ Tubingen, Inst Theoret Phys, D-72076 Tubingen, Germany ; China Inst Atom Energy, Beijing 102413, Peoples R China ; Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China ; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
文章类型Article
摘要A mechanism for the effective dissociation of a c (c) over bar pair in the colour electric field of strings is introduced into a hadron and string cascade model, i.e. JPCIAE, which is based on the LUND model, simulating ultra-relativistic nucleus-nucleus collisions. This new mechanism together with the known mechanism of nuclear absorption (both baryons and mesons) could reproduce fairly the data of the normal and anomalous J/psi suppressions in minimum bias pA, AB (with light projectile), and Pb + Pb collisions at 200 A GeV/c. However the impact parameter (ET) dependence of the J/psi suppression factor, both, in S + U and Pb + Pb reactions at 200 A GeV/c and 158 A GeV/c, respectively, is not well reproduced. We also tested the additional mechanism of the energy degradation of leading particles, with which both, the normal and anomalous J/psi suppressions in minimum bias pA, AB, and Pb + Pb collisions and the E-T dependence of the J/psi suppression factor are better reproduced.
学科领域Physics
DOI10.1088/0954-3899/25/6/302
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语种英语
WOS研究方向Physics
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000080796500005
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239085
专题理论物理室
作者单位中国科学院高能物理研究所
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Ben-Hao, S,Faessler, A,An, T,et al. J/psi normal and anomalous suppressions in a hadron and string cascade model[J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,1999,25(6):1123-1133.
APA Ben-Hao, S.,Faessler, A.,An, T.,Waindzoch, T.,Fuchs, C.,...&台安.(1999).J/psi normal and anomalous suppressions in a hadron and string cascade model.JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,25(6),1123-1133.
MLA Ben-Hao, S,et al."J/psi normal and anomalous suppressions in a hadron and string cascade model".JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 25.6(1999):1123-1133.
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