摘要

Particle physics is to find out answers to the questions: what are the fundamental building blocks of our universe, and how do they interact each other? For the most basic inquiries into the dynamics and structure of matter, space, and time, we seek the simplest kinds of interactions at the highest possible energies. These typically entail particle having high energy and the interactions of the simplest kinds of particles: leptons, quarks and field quanta with size down to 10-18 m.

This presentation is to briefly introduce the Standard Model picture of the elementary particle physics, and how we use cutting edge technology to build big facilities like particle accelerator and particle detector to discover any as yet unobserved constituents that carries information of the early history, the rules governing the interaction among them, and the nature of the space and time in which they reside. Some frontier experiments in space, in deep underground or based on particle accelerators are briefly mentioned as examples to demonstrate how we seek answers to the key science questions. Prospect on the future program of particle physics with accelerators is mentioned. The cutting technologies developed from this field, and their application to energy, homeland security, science of material, biology and medicine, aerospace, astrophysics and cosmology, will be discussed.

报告人简介

赵政国 院士

实验粒子物理学家。中国科学技术大学教授。1956年出生于湖南。1978年至1988年在中国科学技术大学学习并获博士学位。曾工作于中国科学院高能物理研究所、瑞士联邦苏黎世高工(ETHZ)和美国密歇根大学。

长期从事粒子物理实验研究并作出卓越贡献：通过奇异π氢、π氘原子实验得到迄今为止最精确的因强相互作用引起的基态能级的偏移结果，并首次观测到其谱线展宽；通过对飞行π介子束的测量，否定了KARMEN实验报道的发现重中性粒子的结果；领导了北京谱仪(BESII)实验，并进行了2-5GeV能区R值的精确测量，其结果对由弱电数据间接寻找Higgs粒子及其质量拟合以及精确检验标准模型起到极其重要的作用，并受到国际高能物理界的高度赞赏和重视。R值的结果被国际粒子数据手册收录且被写入教科书；为大型强子对撞机上的ATLAS探测器精密缪子谱仪的建造发挥了领导骨干作用，并对双玻色子物理及Higgs粒子的发现做出了直接重要贡献。

2000年获北京市科学技术一等奖，2001年获中国科学院杰出青年科学家奖，2003年获北京市科学技术一等奖，2004年获中国科学院杰出科技成就一等奖，2005年获国家自然科学二等奖，2014年获何梁何利科学与技术进步奖。2012年入选美国物理学会会士。2013年增选为中国科学院院士。曾任中国高能物理分会主任，现任中国物理学会副理事长。