学术报告:Why the proton is 2000-times heavier than the electron

发布时间:2017-04-30 南师物理学院 浏览次数:

报告题目:Why the proton is 2000-times heavier than the electron
报告人:Professor Craig D. Roberts (Group Leader, Theory, Argonne National Laboratory)
报告时间:2017年5月3日(周三)上午10:30-12:00
报告地点:行健楼435会议室
邀请单位:南京师范大学物理科学与技术学院、理论物理研究所
 
报告人简介:
Craig D. Roberts教授是阿贡国家实验室理论物理部门的主任。
主要从事强子物理方面的研究。迄今为止,Craig D. Roberts教授共发表246篇学术论文和会议论文,总引用次数超过13600次。

摘要:
The 2013 Nobel Prize in Physics was awarded to Peter Higgs and Francois Englert following discovery of the Higgs boson at the Large Hadron Collider.  With this discovery the Standard Model of Particle Physics became complete.  Its formulation and verification are a remarkable story.  However, the most important chapter is the least understood.  Quantum Chromodynamics (QCD) is that part of the Standard Model which is supposed to describe all of nuclear physics and yet, fifty years after the discovery of quarks, we are only just beginning to understand how QCD builds the basic bricks for nuclei: pions, neutrons, protons.  Critically, the Higgs boson is often said to give mass to everything.  However, that is wrong.  It only gives mass to some very simple particles, accounting for only one or two percent of the mass of more complex things like atoms, molecules and everyday objects.  The vast majority of mass is an emergent feature of QCD, contained fundamentally in Nambu's share of the 2008 Nobel Prize.  Its appearance appears simultaneously to forever imprison quarks within the proton, preventing them from escaping to directly trigger detection.  Contemporary and future terrestrial experiments are capable of verifying these notions and thereby completing the book on the Standard Model.