Category Archives: Experimental HEP News

A New 30 GeV Particle?

Posted on October 21, 2016 by woit

Last night a preprint appeared on the arXiv, with a re-analysis of old 1992-5 LEP data, looking at the dimuon spectrum for b-tagged (identified as involving a b-quark) events. An excess around 30 GeV was found, which would indicate a … Continue reading →

Posted in Experimental HEP News | 25 Comments

WIMPs on Death Row

Posted on July 21, 2016 by woit

One of the main arguments given for the idea of supersymmetric extensions of the standard model has been what SUSY enthusiasts call the “WIMP Miracle” (WIMP=Weakly Interacting Massive Particle). This is the claim that such SUSY models include a stable … Continue reading →

Posted in Experimental HEP News | 52 Comments

Rumor Mongering

Posted on June 21, 2016 by woit

Since I don’t see why Resonaances should have all the fun, I guess I’ll post something here about the big upcoming news of the summer: is the 750 GeV diphoton bump still there in the 2016 LHC data? We’re very … Continue reading →

Posted in Experimental HEP News | 39 Comments

LHC Run 2 First Results

Posted on December 14, 2015 by woit

First results using the full data from Run 2 at 13 TeV will be presented tomorrow at CERN at 15:00 Geneva time, with a live webcast available here. For some relevant commentary, see Tommaso Dorigo and Matt Strassler. Among relatively … Continue reading →

Posted in Experimental HEP News | 13 Comments

Super and Great Colliders

Posted on November 30, 2015 by woit

I’ve recently finished reading two new books on huge collider projects, which make an interesting contrast. The first is From the Great Wall to the Great Collider, by Steve Nadis and Shing-Tung Yau. It’s a very well-informed and topical book, … Continue reading →

Posted in Book Reviews, Experimental HEP News | 13 Comments

Lepton Photon Interactions at High Energies and the Multiverse

Posted on August 22, 2015 by woit

This past week the large biennial “Lepton-Photon” (International Symposium on Lepton Photon Interactions at High Energies) conference has been taking place in Ljubljana. These have been going on since 1965, now alternating years with the ICHEP (“Rochester”) conference. It’s been … Continue reading →

Posted in Experimental HEP News, Multiverse Mania | 17 Comments

LHC Run 2

Posted on June 2, 2015 by woit

Run 2 of the LHC is about to start with first stable beams scheduled for Wednesday morning, Geneva time). If you’re up (I’ll be asleep) you can watch a live webcast, or watch what is going on here. The current … Continue reading →

Posted in Experimental HEP News | 43 Comments

First Collisions of Run 2

Posted on May 5, 2015 by woit

This morning in Geneva saw the first collisions in the revamped LHC, there’s an event display from ATLAS here, CMS here. These collisions are just at the injection energy of 450 GeV/beam, but over the past few weeks beams have … Continue reading →

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News, Interesting and Otherwise

Posted on November 3, 2014 by woit

On the side of interesting good news, I just heard that yet another Fields Medalist has a blog. This time it’s David Mumford, who is blogging here, with his latest posting about path integrals. His website contains a wealth of … Continue reading →

Posted in Experimental HEP News, Multiverse Mania, Uncategorized | 7 Comments

News from CERN

Posted on December 5, 2013 by woit

Here’s a roundup of recent CERN-related news: The status of the LHC and the LHC experiments was discussed here yesterday. The LHC shutdown is more or less on track, first beams at 13 TeV total energy Jan. 2015, physics starting … Continue reading →

Posted in Experimental HEP News | 5 Comments