Title: From Feynman's Parton Model to the Precision Frontier of High Energy Physics
Speaker: Chien-Peng Yuan
Time: 15:30, April 25
Location: Room 215, No. 8 Hainayuan Building
Abstract:
The strong interaction, also known as the strong nuclear force, is one of the four fundamental interactions in our universe. Over the past fifty years, our understanding of this force has undergone significant advancements, leading to a revolutionary development in our knowledge of the fundamental constituents of matter.
Scientists have discovered that protons and neutrons, which form the core of the matter surrounding us, are composed of smaller building blocks known as quarks and gluons. The strong interaction among them is described by a quantum gauge field theory called Quantum ChromoDynamics (QCD). This breakthrough provides a theoretical framework for understanding the fundamental constituents of matter as well as the evolution of our universe at the very early stage. It has played a crucial role in deepening our understanding of the the fundamental laws of nature.
The talk will start with the Feynman parton model, and introduce the historical development of QCD since then. The talk will then delve into the theoretical foundations of QCD, and discuss how its predictions have been successfully tested and verified through various experimental measurements and observations. Furthermore, the talk will cover the modern applications of QCD in collider physics, particularly focusing on its relevance at the Large Hadron Collider (LHC). These developments have opened up new avenues for studying the fundamental laws of the microscopic world at ultra-high energies.
Biography:
C.-P. Yuan is a professor at Michigan State University and a Fellow of the American Physical Society. He is a distinguished theoretical physicist and the leader of the CTEQ-TEA collaboration. Professor Yuan has made exceptional contributions to the fields of quantum chromodynamics, top quark physics, and proton structure. He has published over 300 papers that have been cited 40000 times. The CTEQ-TEA collaboration, led by him, is internationally renowned as one of the leading research teams dedicated to exploring proton structure.
