学术期刊
切换导航
首 页
文 章
期 刊
投 稿
预 印
会 议
书 籍
新 闻
合 作
我 们
按学科分类
Journals by Subject
按期刊分类
Journals by Title
核心OA期刊
Core OA Journal
数学与物理
Math & Physics
化学与材料
Chemistry & Materials
生命科学
Life Sciences
医药卫生
Medicine & Health
信息通讯
Information & Communication
工程技术
Engineering & Technology
地球与环境
Earth & Environment
经济与管理
Economics & Management
人文社科
Humanities & Social Sciences
合作期刊
Cooperation Journals
首页
数学与物理
现代物理
Vol. 4 No. 3 (May 2014)
期刊菜单
最新文章
历史文章
检索
领域
编委
投稿须知
文章处理费
最新文章
历史文章
检索
领域
编委
投稿须知
文章处理费
重离子碰撞中K+介子的横动能谱
Transverse Kinematical Energy Spectra ofK+ Mesons in Heavy Ion Collisions
DOI:
10.12677/MP.2014.43007
,
PDF
,
HTML
,
XML
,
被引量
下载: 3,233
浏览: 11,139
国家自然科学基金支持
作者:
邢永忠
:天水师范学院物理系,天水;
思李飒娃德.彭拉德
:那列苏安大学物理系,彭世洛府,泰国;
郑玉明
:天水师范学院物理系,天水;中国原子能科学研究院,北京
关键词:
重离子碰撞
;
K产生
;
横动能谱
;
在介质中的K+位势
;
核物态方程
;
协变的K动力学
;
量子分子动力学模型
;
Heavy Ion Collisions
;
Kaon Production
;
The Transverse Kinematical Energy Spectra
;
The K+ In-Medium Potential
;
The Nuclear Equation of State
;
The Covariant Kaon Dynamics
;
The Quantum Molecular Dynamics Model
摘要:
本文采用基于协变的K动力学的量子分子动力学模型,研究了1.93 AGeV入射能量的
58
Ni +
58Ni碰撞中产生的K+介子的横动能谱,并讨论了K+介子在介质中的位势对其横动能谱的影响。理论计算显示,只有计入K+介子在核介质中的位势的效应,才能合理地描写KaoS的实验数据。这表明,我们能从
K
+
介子横动能谱的分析中提取出在核介质中K+介子位势的信息。同时,我们发现,
K
+
介子的横动能谱也是一个探测核物态方程的敏感的观测量。
Abstract:
We use the quantum molecular dynamics model based on the covariant kaon dynamics to investi- gate the transverse kinematical energy spectra of K+ mesons from
58
Ni +
58
Ni collisions at 1.93 AGeV, and discuss the influence of the
K
+
in-medium potential on its transverse kinematical energy spectrum. We observe that the KaoS data can only be reasonably described by calculated results with a repulsive
K
+
N
potential. This indicates that one can extract the information on the K+ in-medium potential in a nuclear medium from the analysis of the transverse kinematical energy spectra of K+ mesons. We find that the transverse kinematical energy spectrum of K+ mesons is also a sensitive observable to probe the nuclear equation of state.
文章引用:
邢永忠, 思李飒娃德.彭拉德, 郑玉明. 重离子碰撞中K+介子的横动能谱[J]. 现代物理, 2014, 4(3): 50-55.
http://dx.doi.org/10.12677/MP.2014.43007
参考文献
[
1
]
Kaplan, B.D. and Nelson, A.E. (1986) Strange goings on in dense nucleonic matter. Physics Letters B, 175, 57-63.
[
2
]
Brown, G.E. and Rho, M. (1996) From chiral mean field to Walecka mean field and kaon condensation. Nuclear Physics A, 596, 503-514.
[
3
]
Schaffner, J., Bondorf, J. and Mishustin, I.N. (1997) In-medium kaon production at the mean-field level. Nuclear Physics A, 625, 325-346.
[
4
]
Waas, T., Rho, M. and Weise, W. (1997) Effective kaon mass in dense baryonic matter: Role of correlations. Nuclear Physics A, 617, 449-463.
[
5
]
Lutz, M. (1998) Nuclear kaon dynamics. Physics Letters B, 426, 12-20.
[
6
]
Li, G.Q., Lee, C.-H. and Brown, G.E. (1997) Kaons in dense matter, kaon production in heavy-ion collisions, and kaon condensation in neutron stars. Nuclear Physics A, 625, 372-434.
[
7
]
Randrup, J. and Ko, C.M. (1980) Kaon production in relativistic nuclear collisions. Nuclear Physics A, 343, 519-544.
[
8
]
Zheng, Y.M., Fuchs, C., Faessler, A., Shekhter, K., Yan, Y. P. and Kobdaj, C. (2004) Covariant kaon dynamics and kaon flow in heavy ion collisions. Physical Review C, 69, Article ID: 034907.
[
9
]
Aichelin, J. (1991) “Quantum” molecular dynamics—A dynamical microscopic n-body approach to investigate fragment formation and the nuclear equation of state in heavy ion collisions. Physics Reports, 202, 233-360.
[
10
]
Zheng, Y.M., Sa, B.H. and Zhang, X.Z. (1989) Dynamical features of medium energy heavy ion collision processes. Chinese Physics Letters, 6, 117.
[
11
]
Fuchs, C., Kosov, D.S., Faessler, A., Wang, Z.S. and Waindzoch, T. (1998) Consequences of covariant kaon dynamics in heavy ion collisions. Physics Letters B, 434, 245-250.
[
12
]
Fang, X.S., Ko, C.M., Li, G.Q. and Zheng, Y.M. (1994) Medium effects on subthreshold kaon production in heavy-ion collisions. Physical Review C, 49, R608-R611.
[
13
]
Fuchs, C. (2006) Kaon production in heavy ion reactions at intermediate energies. Progress in Particle and Nuclear Physics, 56, 1-103.
[
14
]
Fuchs, C., Faessler, A., Zabrodin, E. and Zheng, Y.M. (2001) Probing the nuclear equation of state by K+ production in heavy-ion collisions. Physical Review Letters, 86, 1974.
[
15
]
Zheng, Y.M., Chu, Z.L., Fuchs, C., Faessler, A., Xiao, W., Hua, D.P. and Yan, Y.P. (2002) Transverse flow of kaons in heavy-ion collisions. Chinese Physics Letters, 19, 926.
[
16
]
Senger, P., et al. (1993) The kaon spectrometer at SIS. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 327, 393-411.
投稿
为你推荐
友情链接
科研出版社
开放图书馆