摘要：
We present the first measurement of pseudorapidity distribution of photons in the region 2.3 < or = eta < or = 3.7 for different centralities in Au+Au collisions at square root of (S(NN)) = 62.4 GeV. We find that the photon yield scales with the number of participating nucleons at all collision centralities studied. The pseudorapidity distribution of photons, dominated by pi0 decays, has been compared to those of charged pions, photons, and inclusive charged particles from heavy-ion and nucleon-nucleon collisions at various energies. The photon production has been shown to be consistent with the energy and centrality independent limiting fragmentation scenario.
作者机构：
[江健; 蔡勖] Institute of Particle Physics Huazhong Normal University
会议名称：
第二届全国复杂动态网络学术论坛
会议时间：
2005-01-01
会议地点：
中国北京
会议论文集名称：
第二届全国复杂动态网络学术论坛论文集
关键词：
random matrix theory;rigidity;migration
摘要：
<正>A new concept.the measurement of the energy spectrum-rigidity,is extended into a new area. population migration.Thus resolves the problems of the population sociology。Through analyzing and processing the data of the percentages which the population under the ages of 14 in China of 1996. 15-64 years old people and over 65 years old people counts 29 areas in China and the population over 65 years old people of America counts 50 states in America,we calculate the rigidity value respectively,find that related degree of population migration is a mixing types of Poisson type and Wigner type, conclude the factors of causing of each related characteristic and difference of degree.
期刊：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,2005年31(9):1031-1037 ISSN：0954-3899
通讯作者：
Sa, BH
作者机构：
China Inst Atom Energy, Beijing 102413, Peoples R China.;Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.;Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.;[Sa, BH] China Inst Atom Energy, POB 275 18, Beijing 102413, Peoples R China.
通讯机构：
[Sa, BH] C;China Inst Atom Energy, POB 275 18, Beijing 102413, Peoples R China.
作者机构：
[Hwa, RC] Univ Oregon, Inst Theoret Sci, Eugene, OR 97403 USA.;Univ Oregon, Dept Phys, Eugene, OR 97403 USA.;Hua Zhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Hwa, RC] U;Univ Oregon, Inst Theoret Sci, Eugene, OR 97403 USA.
摘要：
Correlation between shower partons is first studied in high- pT jets. Then within the framework of parton recombination the correlation between pions in heavy-ion collisions is investigated. Since thermal partons play very different roles in central and peripheral collisions, it is found that the correlation functions of the produced hadrons behave very differently at different centralities, especially at intermediate pT. The correlation function that can best exhibit the distinctive features is suggested. There is not a great deal of overlap between what we can calculate and what has been measured. Nevertheless, some aspects of our results compare favorably with experimental data.
作者机构：
[Li, JR; Shu, S] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Shu, S] H;Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
摘要：
We have attempted to apply the CJT formalism to study the nuclear matter. The thermodynamic potential is calculated in Hartree-Fock approximation in the CJT formalism. In the calculation, as them first step, we have neglected the medium effects to the mesons, the momentum dependence in the nucleon self-energy and the fluctuations of the vacuum. After these approximations, the numerical results, are found very consistent with those obtained from the mean field calculation. In our calculation the thermodynamical consistency is also preserved. (c) 2005 Elsevier B.V. All rights reserved.
期刊：
ICHEP 2005: Proceedings of the 32nd International Conference High Energy Physics Vols 1 and 2,2005年:365-368
通讯作者：
Tao, W
作者机构：
[Tao, W] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Tao, W] C;Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
摘要：
A status of the ALICE experiment at LHC is introduced. Some details on the advancement of the major ALICE projects, including the detector construction and physics measurement goals of sub-detectors, together with its installation and running programs and the status of control and computing, are presented.
