Garrett Lisi's New E8 Paper
Updated: 2010-06-28 14:34:19
Social networks are a great help for this kind of news: a new paper by a FB friend does not go unnoticed (at least by me) as it once would. I learned today that Garrett Lisi (picture below), the surfer and theoretical physicist, has deposited another paper in the Cornell arxiv. And it looks as a significant addition to his previous studies of the E8 group. He explicitly calls it "a companion" to the previous article, "An Exceptionally Simple Theory of Everything".
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The idea that a preference in meson decays for matter over antimatter could point to a whole world of unseen particles, including multiple Higgs bosons, just got a blessing.
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Like another neutrino result earlier this week, the MiniBooNE experiment has found that antineutrinos, which should follow the same rules as neutrinos, might oscillate in a slightly different way. The results seem to favor a much-debated antineutrino result obtained by the Liquid Scintillator Neutrino Detector experiment in 1990.
Forty-odd Chicagoans gathered in a bar on June 3, not to watch the Blackhawks in the Stanley Cup finals, but to hear Jason St. John talk about particle colliders, the Standard Model and how the Large Hadron Collider won’t be the end of us all. His lecture was part of Chicago’s inaugural Nerd Nite, a monthly series of informal talks intended to educate and entertain the community’s “lay nerds,” as St. John describes them, while they kick back with beers and martinis. 
A new measurement from the MINOS neutrino experiment today announced an unexpected variance in a property of neutrinos versus antineutrinos. This mass difference parameter, called Δm2 (“delta m squared”), is smaller by approximately 40 percent for neutrinos than for antineutrinos.
During last week's Physics at LHC conference, textbooks were being literally rewritten as experimental particle physicists presented their remeasurements of the data contained in the particle data booklet, which contains all possible data for all existing and hypothetical particles. One theorist presented his prediction for a page from the 2016 version of the booklet.
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The Large Hadron Collider's beam brightness has steadily increased over the past two and a half months. It currently takes a minute to see as many collisions as we used to see in a day. Very soon, the same number of collisions will take seconds. 
It's been just over two months since the first high-energy proton collisions took place in the Large Hadron Collider, and scientists from the LHC experiments have been working feverishly to analyze the data now pouring from their detectors. The results of the first analyses using real LHC data are being presented this week at the "Physics at LHC" conference at the DESY laboratory in Hamburg, Germany. 
Theorists say the discovery of a significant imbalance between the production of matter and antimatter during particle collisions at the Tevatron points to new physics at work -- including the possibility that there may be five types of Higgs boson, rather than just one.