Standard Model
hideThe Standard Model of particle physics is a theory of three of the four known fundamental interactions and the elementary particles that take part in these interactions. These particles make up all visible matter in the universe. The standard model is a gauge theory of the electroweak and strong interactions with the gauge group SU(3)×SU(2)×U(1).
Every high energy physics experiment carried out since the mid-20th century has eventually yielded findings consistent with the Standard Model. Still, the Standard Model falls short of being a complete theory of fundamental interactions because it does not include gravity, dark matter, or dark energy. It isn't quite a complete description of leptons either, because it does not describe nonzero neutrino masses, although simple natural extensions do.
For more information about Standard Model, read the full article at
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News tagged with standard model
3 Questions: Steven Nahn on the elusive Higgs boson
Oct 19, 2009 |
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(PhysOrg.com) -- Troubles at the Large Hadron Collider have led some physicists to suggest the Higgs boson is sabotaging its own discovery. Nahn explains why he disagrees.
Belle Finds a Hint of New Physics in Extremely Rare B Decays
Sep 07, 2009 |
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(PhysOrg.com) -- Quarks, the most fundamental constituents of matters, are classified into six species grouped into three generations as predicted by Professors Kobayashi and Maskawa. The purpose of the B ...
QUIET team to deploy new gravity-wave probe in June
May 15, 2009 |
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A tiny fraction of a second following the big bang, the universe allegedly experienced the most inflationary period it has ever known.
Particle physics study finds new data for extra Z-bosons and potential fifth force of nature
Apr 28, 2009 |
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The Large Hadron Collider is an enormous particle accelerator whose 17-mile tunnel straddles the borders of France and Switzerland. A group of physicists at the University of Nevada, Reno has analyzed data from the accelerator ...
Can R2 gravity explain dark matter?
Apr 20, 2009 |
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(PhysOrg.com) -- "In many ways, the standard model of cosmology works very well," Jose Cembranos tells PhysOrg. "However, there are very basic features that we just do not know. We have dark energy and dark matter. They d ...
New experiments constrain Higgs mass (w/Videos)
Mar 13, 2009 |
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(PhysOrg.com) -- The territory where the Higgs boson may be found continues to shrink. The latest analysis of data from the CDF and DZero collider experiments at the U.S. Department of Energy's Fermilab now ...
Precision measurement of W boson mass portends stricter limits for Higgs particle
Mar 11, 2009 |
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(PhysOrg.com) -- Scientists of the DZero collaboration at the Department of Energy's Fermi National Accelerator Laboratory have achieved the world's most precise measurement of the mass of the W boson by a ...
Physicists offer foundation for uprooting a hallowed principle of physics
Jan 05, 2009 |
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Physicists at Indiana University have developed a promising new way to identify a possible abnormality in a fundamental building block of Einstein's theory of relativity known as "Lorentz invariance." If confirmed, the abnormality ...
In search of a light Higgs boson
Oct 20, 2008 |
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(PhysOrg.com) -- “It's pretty clear that the standard model of physics is not enough to explain all the phenomena in nature,” Tomasz Skwarnicki tells PhysOrg.com. “Through looking at a variety of phenomena – one of them b ...
Michigan integral to world's largest physics experiment
Sep 05, 2008 |
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After 20 years of construction, a machine that could either verify or nullify the prevailing theory of particle physics is about to begin its mission. CERN's epic Large Hadron Collider (LHC) project currently involves 25 ...
A 'New Dimension' at the LHC
Jul 22, 2008 |
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(PhysOrg.com) -- Later this year, the world's largest and most powerful particle accelerator, the Large Hadron Collider near Geneva, Switzerland, will begin operating, sending beams of protons hurling around circular tracks ...
