学术
编内与“编外”粒子的超对称性及某些奇异现象
焦善庆[1] 许弟余[2] 龚自正[3] 陈波涛[3]
[1]西南交通大学理学院,四川成都610031 [2]四川职业技术学院物理系,四川遂宁629000 [3]西南交通大学物理研究所,四川成都610031
摘 要:
研究了编内粒子（三代费米子）和“编外”（不能为三代费米子容纳）粒子的对称性，发现因宇宙早期CP（电荷共轭宇称守恒）破坏导致从低温到高温的相变而变重的玻色型“编外”反粒子是费米型编内粒子的超对称伴子．计算了玻色型“编外”反粒子中最轻且可能是暗物质的“中性微子”的质量约为320 GeV．用Planek分布函数计算出光子数密度与核子数密度之比约为0．6×10^10，与文献中的观测值（约10^10）相近．从光子质量和结构关系的角度分析，认为光子具有夸克／胶子结构，与已有的实验结果吻合．[著者文摘]
文章出处:
《西南交通大学学报》-2005年40卷5期 -616-620页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
0258-2724（2005）05-0616-05
Supersymmetry of In-Group and “Out-Group”Particles and Some Strange Phenomena
JIAO Shan-qing, XU Di-yu, GONG Zi-zheng, CHEN Bo-tao （1. School of Science, Southwest Jiaotong University, Chengdu 610031, China; 2. Dept. of Physics, Sichuan Vocational and Technical College, Suining 629000, China; 3. Institute of Physics, Southwest Jiaotong University, Chengdu 610031, China）
Abstract:
The symmetry of the in-group particles, which are of three generation fermions, and the “out-group”ones, which are not admitted by three generation fermions, was discussed. It was found that the “out-group”antiparticles of Bose type, which came into being because of CP （charge conjugation-parity conservation） violation in the early universe and became heavier due to the phase transformation from low temperature to high temperature, are the supersymmetry companions of the “in- group”particles of Fermi type. The mass of a neutralino, which is the lightest particle of the supemymmetry companions and may be of dark matter, was calculated to be about 320 GeV. The ratio of the number density of photons to that of protons calculated with Planck distribution method is about 0.6 × 10^10, which is close to the observed value （ about 10^10） available in literature. A photon has the quark-gluon structure according to an analysis of the relationship between its mass and structure, which is consistent with the experimental result reported in literature.[著者文摘]
Key words:
“out-group”particle ; supersymmetry ; photon structure ; antilepton-quark resonance ;dark matter
基金资助:
国家自然科学基金资助项目（40474033,10299040）;中国工程物理研究院科学技术基金资助项目（990226）
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