Monday, October 03, 2011

Maury Goodman's Newsletter

*** Superluminal neutrinos - What OPERA saw They measure position with geodesy, time with good clocks, and fit the shape of the 10 microsecond proton pulse at the kicker in the SPS with the shape of the neutrino pulse in the Gran Sasso. Nus appear 60.7+-6.9 +-7.4 ns early. (v-c)/c = 2.48+-0.28+-0.30 e-5. arXiv:1109.4897
*** Superluminal neutrinos - What MINOS saw With geodesy and a not-so-good clock, MINOS in 2007 fit the shape of the nu pulse in the near and far detectors (v-c)/c=5.1+-2.7e-5. arXiv:0706.0437. A task force is looking into new clocks, etc.
*** Superluminal neutrinos - When people looked at Wickipedia I once saw a Monte Carlo study that, if within a group of people, everyone repeated a rumor until they hit someone that had heard it, about 28% of the group would hear it. The announcement was 23 Sep. I heard it on 15 Sep. Maybe it started 10 Sep? http://stats.grok.se/en/latest/Tachyon
*** Superluminal neutrinos - What we'll learn I first learned about neutrino oscillations from a Robert Shrock lecture after there was a rumor that an experiment at SIN had observed muons decaying to e-gamma. I don't know if the data was ever published. Over the next weeks, we'll certainly learn about the accuracy of GPS clocks including GR effects, time-dependent ripple in kicker magnets, subtleties of the differences between group velocity versus phase velocity, Gauss-Boaga surveying,...
*** Superluminal neutrinos - links
  http://xkcd.com/955/ http://www.bbc.co.uk/news/science-environment-15017484 http://chicagotonight.wttw.com/2011/09/28/faster-light-experiments
Taken From Long Baseline Neutrino Oscillation Newsletters

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