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“Something’s the Matter with Anti-Matter: There’s not enough of it”<\/h1>\n
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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; this is the matter we’re all made of.<\/p>\n
The 2008 Nobel Prize in Physics was given to three particle physicists whose theory can explain how this lopsided universe evolved as having unequal parts matter and anti-matter, as predicted in the simplest Big Bang models.<\/p>\n
The Standard Model of Particle Physics has been a triumph of particle physics – many thousands of experiments have confirmed predictions of this simple and elegant model. But it has at least 2 severe shortcomings: while it has been shown to accommodate matter-antimatter asymmetry, it can only do so at a level orders of magnitude too small to explain the matter-antimatter asymmetry of our universe. The other shortcoming is that it predicts a Higgs Boson, which has not yet been observed.<\/p>\n
We’ll discuss the experimental program which has observed and studied the decays of hundreds of millions of B mesons (“beautiful mesons”), testing the Standard Model of Particle Physics to great precision. An overview of the experiment and results will be presented.<\/p>\n","protected":false},"excerpt":{"rendered":"
Dear Caf\u00e9\u00a0Scientifiquers, Our next caf\u00e9 will happen on Tuesday February 28th, 7:30pm at The Railway Club. Our speaker for the evening will be\u00a0Dr. Janis McKenna, Physics professor at the University of British Columbia. “Something’s the Matter with Anti-Matter: There’s not enough of it” About 13.7 billion years ago, our Universe was born in a […]<\/p>\n","protected":false},"author":4075,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-142","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blogs.ubc.ca\/cafesci\/wp-json\/wp\/v2\/posts\/142","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.ubc.ca\/cafesci\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.ubc.ca\/cafesci\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.ubc.ca\/cafesci\/wp-json\/wp\/v2\/users\/4075"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.ubc.ca\/cafesci\/wp-json\/wp\/v2\/comments?post=142"}],"version-history":[{"count":7,"href":"https:\/\/blogs.ubc.ca\/cafesci\/wp-json\/wp\/v2\/posts\/142\/revisions"}],"predecessor-version":[{"id":150,"href":"https:\/\/blogs.ubc.ca\/cafesci\/wp-json\/wp\/v2\/posts\/142\/revisions\/150"}],"wp:attachment":[{"href":"https:\/\/blogs.ubc.ca\/cafesci\/wp-json\/wp\/v2\/media?parent=142"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.ubc.ca\/cafesci\/wp-json\/wp\/v2\/categories?post=142"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.ubc.ca\/cafesci\/wp-json\/wp\/v2\/tags?post=142"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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