The Discovery of Quarks and the Proton's Composition

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This chapter discusses the experiments conducted at the Stanford-Lydia Accelerator Center in 1968 that suggested the existence of independent charged particles inside the proton. It explores the question of why these particles, known as quarks, do not come out of the proton and delves into the calculations on quantum electrodynamics and theories of scalar particles.

Einstein's theory of general relativity is distinguished by its singular simplicity and beauty. The Standard Model of Particle Physics, by contrast, is a bit of a mess. So many particles and interactions, each acting somewhat differently, with a bunch of seemingly random parameters. But lurking beneath the mess are a number of powerful and elegant ideas, many of them stemming from symmetries and how they are broken. I talk about some of these ideas with Chris Quigg, who with collaborator Robert Cahn has written a new book on the development of the Standard Model: Grace in All Simplicity.

Blog post with transcript: https://www.preposterousuniverse.com/podcast/2024/01/22/263-chris-quigg-on-symmetry-and-the-birth-of-the-standard-model/

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Chris Quigg received his Ph.D. in physics from the University of California, Berkeley. He is currently Distinguished Scientist Emeritus at Fermi National Accelerator Laboratory. Among his awards is the J.J. Sakurai Prize in theoretical particle physics from the American Physical Society. He is also the author of Gauge Theories of the Strong, Weak, and Electromagnetic Interactions.

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