She helped discover the “God particle” and she?s going to talk about it this week. UW-Madison physics professor Sau Lan Wu will give a free public lecture Thursday about the two decades she spent searching for the Higgs boson particle, which scientists believe they found in July. It was hailed as one of the most important scientific discoveries in a century and had a team of UW-Madison researchers, led by Wu, playing leading roles figuring out the physics of, and building and operating, the $10 billion machine used to discover the particle.