作者机构：
[WU, YF; LIU, LS] Institute of Particle Physics, Hua-Zhong Normal University, Wuhan 430070, China
通讯机构：
[WU, YF] H;HUA ZHONG NORMAL UNIV,INST PARTICLE PHYS,WUHAN 430070,PEOPLES R CHINA.
摘要：
From the study of even and odd multiplicity distributions for hadron-hadron collision in different rapidity windows, we propose a simple picture for charge correlation with nonzero correlation length and calculate the multiplicity distributions and the normalized moments in different rapidity windows at different energies. The results explain the experimentally observed coincidence and separation of even and odd distributions and also the anomalous energy dependence of normalized moments in narrow rapidity windows. The reason for the separation of even-odd distributions, appearing first at large multiplicities, is shown to be energy conservation. The special role of no-particle events in narrow rapidity windows is pointed out.
作者机构：
HUAZHONG NORMAL UNIV,DEPT PHYS,WUHAN 430070,PEOPLES R CHINA
通讯机构：
UNIV SCI & TECHNOL CHINA,CTR FUNDAMENTAL PHYS,HEFEI 230026,PEOPLES R CHINA.
会议名称：
37TH INTERNATIONAL SYMP ON FIELD EMISSION
会议时间：
JUL 29-AUG 03, 1990
会议地点：
ALBUQUERQUE, NM
摘要：
By using FIM, high-transition-temperature superconducting Bi2(Sr, Ca)3Cu2O(y) has been examined with H-2 and Ar imaging gases. Two kinds of FIM images, lines and spots, have been observed and analyzed. Both patterns convincingly show the lamellate structure of the specimens. The periodicity of the FIM image patterns is consistent with the proposed models, and some new patterns are observed and discussed.
作者机构：
Institute of Particle Physics, Hua-Zhong Normal University, Wuhan, China<&wdkj&>
摘要：
The rapidity distributions of shower particles in high-energy nucleus-nucleus collisions are investigated and compared with that in hadron-hadron and hadron-nucleus collisions. The remarkable difference in the correlation between rapidity distribution and multiplicity in the three cases, as well as the scaling of rapidity distribution in the target region and the nonscaling of the same distribution in the central region, are explained.
作者机构：
[ZHUANG, PF; LIU, LS] Institute of Particle Physics, Hua-Zhong Normal University, Wuhan 430070, China
通讯机构：
[ZHUANG, PF] H;HUA ZHONG NORMAL UNIV, INST PARTICLE PHYS, WUHAN 430070, PEOPLES R CHINA.
摘要：
The energy, target-mass, and rapidity-window independence or approximate independence of the multiplicity moments in high-energy nucleus-nucleus collisions are analyzed. It is pointed out that all of these properties are due to nuclear geometry. It is proved under general conditions that, when the target mass is not extremely light and the rapidity window not very narrow, the normalized moments of multiplicity are approximately equal to that of the number of participating nucleons. The calculated results for both minimum-bias and central events agree with recent experimental data.
