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COMPARISON OF J/PSI-SUPPRESSION IN PHOTON, HADRON AND NUCLEUS-NUCLEUS COLLISIONS - WHERE IS THE QUARK-GLUON PLASMA

被引：102
作者：
GERSCHEL, C [1 ]
HUFNER, J [1 ]
机构：
[1] UNIV HEIDELBERG, INST THEORET PHYS, W-6900 HEIDELBERG, GERMANY
来源：
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1992年 / 56卷 / 01期
关键词：
D O I：
10.1007/BF01589720
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：
The data of J/psi-production cross sections from photon, hadron and nucleus-nucleus collisions are plotted against the length of the ccBAR final state trajectory in nuclear matter. A value for the absorption cross section per nucleon of sigma(abs)psiN=(6.2+/-0.3) mb is deduced from the baryon and photon induced reactions and sigma(abs)psiN=6.9+/-1.0) mb from the nucleus-nucleus collisions. The equality of cross sections implies that additional suppression effects from a quark-gluon plasma are not visible.
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页码：171 / 174
页数：4
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