Next Seminars: Date: Wednesday, October 19, 5PM Location: TBA Speaker: Dr. Andre Ivanov (UBC EECE) Abstract: This presentation will highlight 50+ years of technology development and breakthroughs pertaining to the test and design for test of ICs, Systems on a Chip (SoCs) and Systems of SoCs. Some highlights of the major challenges faced by the research communities and by the industry will be presented. Highlights of emerging trends and solutions will also be presented. "Something's the Matter with Anti-Matter: Charge-Parity Violation and the Babar Experiment" Date: Wednesday, October 26, 5PM Location: Hebb 10 Speaker: Dr. Janis McKenna (UBC PHAS) Abstract: About 13.7 billion years ago, our Universe was born in a Big Bang. That early universe was a big steaming stew of radiation and exactly equal numbers of particles and antiparticles. But somehow, a symmetry was broken, and a lopsided-ness arose, leaving a very small excess of matter over antimatter. And by the time the universe was less than a second old, essentially all the antimatter had annihilated with matter in bursts of light/energy, leaving a small residual excess of matter - which is all the matter we see in our universe; the matter we're all made of. Understanding Charge-Parity (CP) violation and its origins is a key element in understanding this matter-antimatter asymmetry. The Standard Model of Particle Physics has been a triumph of particle physics - but it has a shortcoming: it accommodates CP violation, but at a level orders of magnitude too small to explain the matter-antimatter asymmetry of our universe. Charge Parity violation, was first observed 47 years ago in the neutral kaon system, and in 2001 using the BaBar Experiment at the Stanford Linear Accelerator Center, we were the first to observe CP violation in another system: the B meson system. In the 1970's three theoreticians proposed a model to explain how the universe is dominantly matter and not anti-matter, but it was not until recently that our group and another finally confirmed their theory, earning them their 2009 Nobel Prize. (we earned a mention in their Nobel citation!) I'll review our 15 year experimental program, studying the decays of hundreds of millions of B mesons, examining CP violation and testing the Standard Model of Particle Physics to great precision. An overview of the experiment and results will be presented. |
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Ground State > Announcements >
Fizz Seminar Seriesposted Oct 16, 2011 8:45 PM by President UBCFizz |