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... the standard model: where g = couping constant Y, tau, lambda are the generators of U(1), SU(2), and SU(3) symmetry B, W, G are ...

Blog Post - Doug Sweetser - Sep 22 2011 - 10:38pm - 0 attachments

... Further down we find muons originated from the decay of tau leptons, which in turn were due to the decay of W (in yellow) or Z bosons ... directly produced by W and Z bosons discussed earlier: the tau decay produces not only a muon, but also two neutrinos, so the muon can ...

Article - Tommaso Dorigo - Sep 5 2011 - 12:31pm - 0 attachments

Note: I have discussed today's topic in one of my best articles here some time ago , and I also gave even more technical insight in another piece . I decided to revisit the topic once more under the stimulus of a online HEP magazine, which is goin ...

Article - Tommaso Dorigo - Sep 1 2011 - 10:56am - 0 attachments

Rocket science deserves its reputation as a difficult subject to approach. Relativistic rocket science is scarier still. If one tries to take this difficult, scary subject, and apply it to the way the biggest masses in all the Universe move, wouldn’t that ...

Blog Post - Doug Sweetser - Apr 11 2011 - 11:20pm - 0 attachments

For this instance of my "Guess the plot" series I wish to go back to the basics. So I picked a graph which allows me to illustrate a general concept, something about particle physics (but we could say physics in general, and actually extending to other ex ...

Article - Tommaso Dorigo - Aug 18 2011 - 1:47am - 0 attachments

... come in three types or "flavors" – electron, muon, and tau – that can morph or oscillate from one form to another as they travel ...

Article - News Staff - Aug 15 2011 - 11:09am - 0 attachments

In Proofiness - How Gender And Pay Statistics Are Used To Do Bad Things , I noted that some of the statistics regarding gender and pay in science were misconstrued to make it look like science academia is sexist as opposed to simply being unequal in pl ...

Blog Post - Hank Campbell - Aug 14 2011 - 6:22pm - 0 attachments

... obtained by CMS in the search for Higgs boson decays to tau lepton pairs (paper here ). Why tau pairs ? Well, because tau leptons are heavy -at 1.77 GeV they are much ...

Article - Tommaso Dorigo - Jul 22 2011 - 11:11am - 0 attachments

While experimentalists gathered in Grenoble present the latest results on High-Energy Physics searches and measurements, phenomenologists like Sven Heinemeyer are working 24/7 to update the picture of the breathing space left for Supersymmetry, in the lig ...

Article - Tommaso Dorigo - Jul 30 2011 - 11:58pm - 0 attachments

In the last few days I described in some detail ( here and here ) the six searches for the Standard Model Higgs boson just produced by CMS, the experiment at the CERN Large Hadron Collider to which I proudly belong. The prompt reporting of these ...

Article - Tommaso Dorigo - Jul 25 2011 - 11:33pm - 0 attachments