Category Archives: Experimental HEP News

The Resonaances blog has a report from Planck 2009 on a talk about the status of the LHC. The slides of the talk explain the problems with training quenches that have necessitated initially running the machine at 5 TeV per … Continue reading →

Last year the D0 collaboration at the Tevatron published a claim of first observation of an Ωb particle (a baryon containing one bottom and two strange quarks), with a significance of 5.4 sigma and a mass of 6165 +/- 16.4 … Continue reading →

I mentioned this here when I first heard about it, but by now more information is available. Last Thursday the Austrian government announced their intention to withdraw from membership in CERN, effective late 2010. This decision still needs to be … Continue reading →

A couple weeks ago I linked here to a draft LHC schedule that had about 3 weeks slippage from the previous schedule, which has beam commissioning starting again on September 21 (week 39). This was due to delays in getting … Continue reading →

The new combined CDF/D0 Higgs mass limits are out, there’s a paper here. At a confidence level of 95%, a standard model Higgs is excluded for a mass range between 160 and 170 GeV. At a confidence level of 90%, … Continue reading →

The news media are full of stories about the observation at the Tevatron of “single top” production, at a rate consistent with that expected from the Standard Model. There are talks at Fermilab going on about this today, and the … Continue reading →

The 2009 Chamonix workshop on the commissioning of the LHC has just finished, ending with a message from the Director General, and the opening to the public of the web-site with slides from the meeting (bearing the warning “The Chamonix … Continue reading →

In the last posting I linked to the web-site for next week’s LHC Performance workshop at Chamonix, where the state of efforts to recover from last September’s accident and plans for this year will be discussed. As in many previous … Continue reading →

Tommaso Dorigo has a new post up on Information control from CERN, where he discusses a Physics World interview by Matthew Chalmers of the head of communications at CERN, James Gillies. Gillies addresses what CERN sees as a problem: information … Continue reading →