Matt Strassler

Theoretical particle and string physicist. (until 2013, Full Professor, Rutgers University; previously Associate Professor, University of Washington; Assistant Professor, University of Pennsylvania; Five-Year Member, Institute for Advanced Study)

ATLAS and CMS report on Higgs decaying to W particles

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ATLAS reports that they have excluded Higgs with mass of 158-186 GeV but see an excess of between 2 and 3 standard deviations in the range 130-150 or so. CMS reports exclusion of 150-183 but they see some excess in the same region of 130-150 or so, not quite as large, more like 1-2 standard … Read more

Quick update from Grenoble

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Greetings from Grenoble, and the EuroPhysics conference.  There’s so much data being described, and there are so many simultaneous talks, that it is hard to make sure I’m getting all of the new information.  And there’s a huge amount of news, which will take a while to summarize. Before I do, I should say that … Read more

A long-expected [and not-so-exciting] particle finally observed

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No less than Fox News reports that Fermilab has found a new particle!  And it’s true, but this is one of those places where the word “particle” is not descriptive.  This is a new [but totally expected!] HADRON, a particle made from other known particles — quarks, antiquarks and gluons.

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Some thoughts on why there’s so much Tevatron news.

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Greetings from Grenoble and the European Physical Society conference!  Lots of new data to review!  I’ll have more to say on that over the next days. Meanwhile, you might be wondering, as have been many particle physicists, why the Tevatron experiments CDF and DZero are seeing so many deviations from the Standard Model recently.  Here’s … Read more

It’s official.

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Ok, folks, the web site “Of Particular Significance” is officially open for business.  A few articles, posts and video clips are up,  and news from the first big LHC summer conference starts flowing in later this week!  Take a look around and check back often…

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