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Latest Elementary particle Stories

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2008-03-31 15:25:00

Universit© de Montr©al physicist Claude Leroy a key figure among international team that designed world's biggest particle physics detectorDeep in the bowels of the earth "“100 meters below ground in Geneva, Switzerland "“ lies a supermachine of 27 km circumference called the Large Hadron Collider (LHC) that has been built to unlock the mysteries of the universe. Claude Leroy, a Universit© de Montr©al physics professor, was among the 2,500 scientists from 37...

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2008-03-28 09:00:00

One of the most significant moments in the history of science may come after a new particle collider starts work this year beneath the Swiss-French border, according to a renowned physicist, Brian Greene. The Large Hadron Collider just might prove that the controversial "theory of everything," string theory, is true. Greene, professor of physics and mathematics at Columbia University, New York City, and author of best-selling books on string theory, spoke Tuesday at Brigham Young...

2008-02-29 12:02:43

Today the ATLAS1 collaboration at CERN2 celebrates the lowering of its last large detector element. The ATLAS detector is the world's largest general-purpose particle detector, measuring 46 metres long, 25 metres high and 25 metres wide; it weighs 7000 tonnes and consists of 100 million sensors that measure particles produced in proton-proton collisions in CERN's Large Hadron Collider3 (LHC). The first piece of ATLAS was installed in 2003 and since then many detector elements have journeyed...

2008-01-31 17:15:00

MADISON - When the world's most powerful particle accelerator starts up later this year, exotic new particles may offer a glimpse of the existence and shapes of extra dimensions. Researchers from the University of Wisconsin-Madison and the University of California-Berkeley say that the telltale signatures left by a new class of particles could distinguish between possible shapes of the extra spatial dimensions predicted by string theory. String theory, which describes the fundamental...

2008-01-28 11:40:00

Squarks, photinos, selectrons, neutralinos. These are just a few types of supersymmetric particles, a special brand of particle that may be created when the world's most powerful atom smasher goes online this spring. The Large Hadron Collider (LHC) at a particle physics lab called the European Organization for Nuclear Research (CERN) in Geneva, Switzerland, will very likely change our understanding of the universe forever. The 17-mile-long underground particle accelerator will send protons...

2007-11-22 09:16:39

British poet William Blake once wrote that a world was contained in a grain of sand. Physicists have done one better, finding a surprising link between streams of flowing sand grains and the birth of the universe. A new study in the latest issue of the journal Physical Review Letters finds that flowing sand grains show liquid-like behavior also witnessed in particle-collider experiments that simulate our universe's first moments. "Nature plays the tricks that it...

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2006-07-12 09:07:23

What if the tiniest components of matter were somehow different from the way they exist now, perhaps only slightly different or maybe a lot? What if they had been different from the moment the universe began in the big bang? Would matter as we know it be the same? Would humans even exist? Scientists are starting to find answers to some profound questions such as these, thanks to a breakthrough in the calculations needed to understand the strong nuclear force that comes from the motion of...

2005-07-07 15:32:05

Dutch researcher Bram Wijngaarden investigated how bottom quarks are created during collisions between protons and antiprotons. Wijngaarden's measurements have contributed to a better understanding of the theory, and can be used to explain why the production of these quarks during such collisions is higher than had originally been expected. Bram Wijngaarden investigated the creation of bottom quarks using the D zero experiment of the particle accelerator at the Fermi lab in Chicago, United...

2005-07-06 23:18:45

New, higher precision data that could only have been gathered at the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab) shows the Theta-plus pentaquark doesn't appear in another place it was expected. This intriguing finding contradicts evidence previously presented by Jefferson Lab researchers that they had sighted a pentaquark, a particle built of five quarks. Volker Burkert, a Jefferson Lab Experimental Hall Leader, will present this preliminary result in...

2005-07-06 17:35:34

Its name is Y(4260) and it is not a new humanoid of Stars Wars, but a particle identified for the first time by BaBar experiment: an international collaboration - formed by the large participation of the Italian physicists of the National Institute for Nuclear Physics (Infn) - that has its seat in Stanford (California). Y(4260) represents an interesting element with respect of particles' field and it will provide very useful signs about character of the strong force, that is the force that...