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Thread: Special thread for this!! Large Hadron Collider |
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Thread Status: Active Total posts in this thread: 48
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Rumors had it that the US collidor operators were wanting to steal the thunder from CERN through an ad-hoc PR of their momentary finding [announced after the CERN announcement], but not heard any yet. Meantime, a scientist of CERN/LHC BOINC project "Testing 4 Theory", requiring VM installation and permanent network connectivity, gave out this mail to the crunchers:
----------------------------------------3 July 2012 Daniel Lombraña González Project scientist posted: CERN and the scientific World are abuzz with speculations about what exactly will be announced in a scientific seminar to take place at CERN, this Wednesday, July 4th, at 9am (CET). A public web cast will be available: http://cern.ch/webcast. The speculations concern whether hints of the elusive Higgs particle - key to the origin of mass - have been reconfirmed with this year's data from the Large Hadron Collider (LHC). If so, Wednesday's announcement could kickstart a whole new era of investigations with the LHC. Not only would it mark the beginning of detailed measurements of the physical properties of the Higgs field, such as its interaction with matter and force, it would also give a huge impetus to searches for so-called "New Physics" - the Higgs field being extremely sensitive to quantum effects, there are indications that something more, beyond the spectrum of known particles, is needed to explain its apparent stability. But first, tune in to CERN on Wednesday, if you want to be among the first to find out whether the Higgs is really fact, or still fiction. http://lhcathome2.cern.ch/test4theory/forum_t...984&nowrap=true#11258 Our universe is just a marble in a bag of many [see last 5 seconds of Man In Black for the animation of this picture] :O. --//-- edit: Webcast is up... towards end Peter Higgs is shown in the audience, drying a tear. Near 50 years after a theory was launched, very close to 100% confidence, now 99%. [Edit 1 times, last edit by Former Member at Jul 4, 2012 8:47:12 AM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
very close to 100% confidence, now 99%. More like 99.99995% confidence. In terms of stats, that is a *lot* more confident than 99%. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hey, let that 1% be... the presentation mentions 99% and that's already huge [and still they say they found something that meets the SM expectation, but need 3-4 more years to confirm]... restrained.
In the press conference it was noted that the running experiment is extended for 3 months [at top performance], so as to collect a lot more data, as after this the collider is shut down [which takes months in itself being so cold, so near 0K] for 2 years. (if the presentation gets cut off, just hit run again, and the next segment runs... there are 6.) --//-- |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
A nice summary at BBC news http://www.bbc.co.uk/news/world-18702455 ... 5 sigma confidence they have a new discovery in hand. :D
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
A nice summary at BBC news http://www.bbc.co.uk/news/world-18702455 ... 5 sigma confidence they have a new discovery in hand. :D And what does 5 sigma confidence mean in percentage terms?... 99.999943%  Tis very good news indeed, particularly as I've been working on the CMS experiment for the last 10 years! Finally after a lot of slog we have a major result! [Edit 2 times, last edit by Former Member at Jul 4, 2012 11:44:07 AM] |
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Warped@RSA
Senior Cruncher South Africa Joined: Jan 15, 2006 Post Count: 423 Status: Offline Project Badges: 
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I've never been so excited about something I have no idea about.
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Dave
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Dataman
Ace Cruncher Joined: Nov 16, 2004 Post Count: 4865 Status: Offline Project Badges: 
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While I hope this announcement turns out to be true, I will reserve my excitement until there is a lot more peer review. I remember the 1989 excitement and subsequent disappointment over "Cold Fusion". Science is a process, not a press release.
---------------------------------------- Cheers all ...   |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
While I hope this announcement turns out to be true, I will reserve my excitement until there is a lot more peer review. I remember the 1989 excitement and subsequent disappointment over "Cold Fusion". Science is a process, not a press release. Whilst that is a sensible standpoint, CERN is - to quote Peter Higgs - "remarkably fussy" with its requirements for announcing something as discovered. That wasn't just a press release. To give you an idea of the process, multiple independent analysis groups within each of the two independent experiments (built on different detector technologies) perform blind analysis of recorded events. Each analysis group is looking for evidence of the Higgs in a particular decay channel, of which there are several. So, effectively, 3 or more analysis groups from each of the two independent experiments have all found a peak in the data at 125 GeV after unblinding their respective analyses. This peak is sufficiently large that statistically there is less than a 1 in 2 million chance of it being a random statistical anomaly. And that is true of both experiments, so the overall certainty is better still. There's something there that is very, very Higgs-like. It'll be collecting more data that confirms it further, not peer review. [Edit 3 times, last edit by Former Member at Jul 4, 2012 3:22:58 PM] |
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