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The Astronomerssupersymmetry
Videos with tag supersymmetry
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04:42
04:42
04:42

CERN Update: The Higgs Boson - Is it the God Particle?

http://facebook.com/ScienceReason ... CERN/LHC Update: "The Higgs Boson - Is it the God Particle?" CERN confirms existence of new particle consistent with Higgs boson. Is the Higgs boson the long-sought "God Particle"? And what do scientists think about the metaphor "The God Particle"? The ATLAS and CMS experiments at CERN presented their latest results in the search for the long-sought Higgs boson. Both experiments see strong indications for the presence of a new particle, which could be the Higgs boson, in the mass region around 126 gigaelectronvolts (GeV). --- Please SUBSCRIBE to Science & Reason: • http://www.youtube.com/FFreeThinker • http://www.youtube.com/ScienceTV • http://www.youtube.com/Best0fScience • http://www.youtube.com/RationalHumanism --- CERN experiments observe particle consistent with long-sought Higgs boson "We now have more than double the data we had last year," said CERN Director for Research and Computing, Sergio Bertolucci, "that should be enough to see whether the trends we were seeing in the 2011 data are still there, or whether they've gone away. It's a very exciting time." If and when a new particle is discovered, ATLAS and CMS will need time to ascertain whether it is the long sought Higgs boson, the last missing ingredient of the Standard Model of particle physics, or whether it is a more exotic form of the boson that could open the door to new physics. "It's a bit like spotting a familiar face from afar," said CERN Director General Rolf Heuer, "sometimes you need closer inspection to find out whether it's really your best friend, or actually your best friend's twin." The Standard Model gives an extraordinarily precise picture of the matter that makes up all the visible universe, and the forces that govern its behaviour, but there are good reasons to believe that this is not the end of the story. For example, we know from observation that the visible universe is just 4% of what seems to be out there. "It's hard not to get excited by these results," said CERN Research Director Sergio Bertolucci. " We stated last year that in 2012 we would either find a new Higgs-like particle or exclude the existence of the Standard Model Higgs. With all the necessary caution, it looks to me that we are at a branching point: the observation of this new particle indicates the path for the future towards a more detailed understanding of what we're seeing in the data." "We have reached a milestone in our understanding of nature," said CERN Director General Rolf Heuer. "The discovery of a particle consistent with the Higgs boson opens the way to more detailed studies, requiring larger statistics, which will pin down the new particle's properties, and is likely to shed light on other mysteries of our universe." Positive identification of the new particle's characteristics will take considerable time and data. But whatever form the Higgs particle takes, our knowledge of the fundamental structure of matter is about to take a major step forward. • http://press.web.cern.ch/press/PressReleases/Releases2012/PR17.12E.html --- Tags: "god particle" "higgs boson" "higgs particle" god particle higgs boson new higgs-like cern lhc cms atlas experiments physics standard model supersymmetry susy mass matter universe results videos .

Channels: Physics 

Added: 1925 days ago by Ordonomundi

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02:09:34
02:09:34
02:09:34

CERN Higgs Boson Discovery Seminar/Lecture

Director General of CERN, Rolf Heuer, and the head scientists from the ATLAS and CMS at CERN in Geneva gives a conference and lecture on the discovery of the Higgs Boson at a rest mass energy of 126.5 GeV at a 4.9 confidence level (the maximum limit being 5) . This confidence level, in experimental physics, constitutes a discovery with 98% probability of certainty, making it the first true discovery of the Higgs Boson in human history. The bump in the energy spectrum observed at 125GeV contained a bump known with 99.9997% certainty. Since the observed Higgs mass lies between 115--130 GeV, this rules out the minimal Standard Model Higgs expected at 141 GeV. This means that it is a Higgs-like Boson! The Higgs seen at 125.5 GeV is at 3.8 sigma confidence level for the 4-lepton channel, the so-called "Golden Channel" of 4-leptons, created by the Higgs decaying into 2 Z-Boson Intermediates and those decaying into 4-leptons, 2-leptons per Z-Boson. These Leptons are Muons, detected by the Compact Muon Solenoid (CMS) detector. The same channel leads to a 3.2 confidence level with the look elsewhere effect taken into account. The Z-boson and photon channel integrated gives 5 sigma, the highest level possible with no significant errors. The W-channel gives 1.5 sigma confidence channel, so it is definitely meeting the double blind trials of a "Well-behaved" Higgs. Its a good boson for a Higgs candidate, it does as the Higgs should. The discovery from the various decay channels detected, the Boson discovered was most likely a "New Boson" or at least a "Higgs-like" Boson at 125.3 +/- 0.6 GeV at 4.9 sigma confidence level. This makes it a significant scientific discovery. The minimalist models of the Standard Model predict that the Higgs mass ought to be at about 141 GeV. So a 125 GeV model is a problem, theoretically, and leads to many problems like an unstable vacuum at energies much lower than the Planck scale. The Physics obtained from this discovery will most likely be new physics that will help us understand electroweak symmetry breaking but it also seems more and more likely that we are beginning to observe the effects of Supersymmetry for the first time aswell. Supersymmetric models are our best bet in this situation for the Boson discovered, for which it behaves like the Higgs Boson should. The Boson Detected with the square root of its action being at 8TeV has a Lagrangian Density of about 5 femtobarns (5 x 10^-9 barns), since 1 barn = 100 femtometers^2 this means the Higgs cross-section is only 5 x 10^-43 meters squared. Experimentally however it is a great triumph and a powerful discovery, the data obtained from this event through rigorous experimental and computational techniques will be studied and scrutinized as normal but now we know where to go from here. The Boson is here to stay and the work is going to begin on mastering it. Considering that it was found in the last energy region searched, this last piece of the jigsaw is deservedly put in its rightful place. The full picture will change everything.

Channels: Physics 

Added: 1925 days ago by Ordonomundi

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06:03
06:03
06:03

Bees and the LHC

To read along go to http://imaginingthetenthdimension.blogspot.com/2010/12/bees-and-lhc.html Other links from this entry: http://www.technologyreview.com/blog/arxiv/26132/ http://arstechnica.com/science/news/2010/10/dying-bee-colonies-linked-to-a-fungus-and-virus-in-cahoots.ars

Channels: Physics 

Added: 2067 days ago by deek

Views: 643 | Comments: 0

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