论文部分内容阅读
一、π~+介子、π~-介子的组成本题考查电荷守恒定律.例1中国科学技术大学博士研究生罗晓峰与美国、印度科学家合作,在世界上首次确定了从强子物质(即普通物质)到夸克胶子等离子体的相变温度,在通常情况下,夸克和胶子被强相互作用力禁闭在强子中,强子(包括质子、中子和介子),已知π~+介子、π~-介子都是由一个夸克(夸克u或夸克d)和一个反夸克(反夸克u或反夸克d)组成的,它们的带电量如表1所示(表中e为元电荷).
First, the π ~ + meson, π ~ - meson composition of the subject examines the law of conservation of charge Example 1 University of Science and Technology of China PhD student Luo Xiaofeng and the United States and India scientists, the world for the first time identified from hadron (ie, common substance) Quark and gluon are confined strongly in hadrons by strongly interacting forces, including hadors (including protons, neutrons and meson), π ~ + meson, The π ~ - meson is composed of a quark (quark u or quark d) and an antiquark (antiquark u or antiquark d). Their charges are shown in Table 1 (where e is the elementary charge).