Higgs seminar - live webcast from CERN

http://www.quantumdiaries.org/2011/12/13/higgs-liveblog/

by pawelwentpawel • 15 years ago

41 6 15 years ago

quantumdiaries.org

DiabloD3• 15 years ago

Damn, its cutting out badly. Anyone have a mirror for the live webcast?

JonnieCache2• 15 years ago

First textmate 2, now the higgs boson. Maybe on christmas day we'll find out that P=NP.

hmottestad• 15 years ago

From what I understand:

They haven't found the higgs, just large deviations around 126 GeV, which seems might be the higgs boson. EDIT: 116-130 GeV

The most interesting part of the transcript:

14:45 With current data set ATLAS has excluded 112.7-115.5GeV and 131-453GeV (except for 237-251GeV) ATLAS is now competing with LEP's low mass results! There is a large deviation in p0-values at 126GeV. 1.9e-4, or an excess of 3.6sigma (gamma gamma 2.8 has sigma, ZZ* has 2.1, WW* has 1.4sigma)

Updating all other analyses for full data set. We need more data in 2012 in order to confirm if this is the Higgs. 126GeV is a nice mass for the Higgs- it can be probed with lots of modes (gamma gamma, ZZ, WW, bb, tautau).

----AND----

15:34: Two excesses at 119.5GeV and 124GeV. Both excesses seem compatible with a Standard Model Higgs. 95% confident limits include 127-600GeV. Some excess is present in all 5 channels. Statistical significance of 2.6sigma locally and 1.9sigma with Look Elsewhere Effect taken into account.

pawelwentpawel• 15 years ago

there is a press release ready too - http://press.web.cern.ch/press/PressReleases/Releases2011/PR...

JonnieCache2• 15 years ago

The guardian has a liveblog going where they've collected comment from various physicists from across the web giving their explanations. They also have a nice plot image of the collision which apparently could show the higgs.

http://www.guardian.co.uk/science/2011/dec/13/higgs-boson-se...

They've really gone to town on the LHC coverage today. Check the homepage, it's taking up a huge chunk of it. Good old guardian.

VladRussian• 15 years ago

"Both of the main detectors, ATLAS and CMS, have uncovered hints of a lightweight Higgs. If it pans out, the only remaining hole in the standard model would be filled.

Even more exciting, a Higgs of this mass, about 125 gigaelectronvolts, would also blast a path to uncharted terrain. Such a lightweight would need at least one new type of particle to stabilise it."

great to hear that there is plan B for LHC if Higgs is finally found :)

Higgs seminar - live webcast from CERN

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