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Latest Gluon Stories

Has The LHC Created A New Form Of Matter?
2012-11-28 13:02:35

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online In September 2012, the Large Hadron Collider (LHC) conducted a short run of collisions between protons and lead nuclei. The roughly two million events recorded were set to serve as a baseline for lead-lead collisions anticipated for next year. However, these events produced an unexpected result. Ridge Correlations Very high-energy particle collisions produce thousands of new particles which stream away from the...

2012-01-17 22:36:39

Previous theories imposed a limit on how 'liquid' fluids can be -- but new calculations show that quark-gluon-plasma in high-energy particle accelerators can be even have a lower viscosity than this limit suggests How liquid can a fluid be? This is a question particle physicists at the Vienna University of Technology have been working on. The "most perfect liquid" is nothing like water, but the extremely hot quark-gluon-plasma which is produced in heavy-ion collisions at the Large Hadron...

Large Hadron Collider Set To Investigate Big Bang With More Precision
2011-11-02 10:08:31

Researchers at Switzerland´s Large Hadron Collider (LHC) are setting aside four weeks to investigate the conditions of the early universe in more detail than ever before and taking a break from searching for the Higgs boson, David Shiga from New Scientist is reporting. The Higgs boson experiment has produced roughly 6 inverse femtobarns of collision data, about three times the total used in the last major analysis searching for the elusive particle, thought to endow other particles...

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2011-06-26 07:52:07

By comparing theory with data from STAR, Berkeley Lab scientists and their colleagues map phase changes in the quark-gluon plasma In its infancy, when the universe was a few millionths of a second old, the elemental constituents of matter moved freely in a hot, dense soup of quarks and gluons. As the universe expanded, this quark"“gluon plasma quickly cooled, and protons and neutrons and other forms of normal matter "froze out": the quarks became bound together by the exchange of...

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2011-05-06 11:22:33

Researchers use the NSF-supported Ranger supercomputer to explore alternative particle theories As the Large Hadron Collider (LHC) ramps up the rate and impact of its collisions, physicists hope to witness the emergence of the Higgs boson, an anticipated, but as-yet-unseen, fundamental particle that scientists believe gives mass to matter. The Higgs boson is a central component of the "standard model," a theory that defines the relationships between the forces of the universe. But, what if...

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2011-02-16 08:25:33

Direct measurements allow detailed look at how quarks of different flavors contribute to spin Scientists hoping to unravel the mystery of proton spin at the Relativistic Heavy Ion Collider (RHIC), a 2.4-mile-circumference particle accelerator at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory, have a new tool at their disposal "” the first to directly explore how quarks of different types, or "flavors," contribute to the overall spin of the proton. The technique,...

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2009-02-15 15:30:00

Duke and Brookhaven examine free-flowing 'exploding cigars' Several years after Duke University researchers announced spectacular behavior of a low density ultracold gas cloud, researchers at Brookhaven National Laboratory have observed strikingly similar properties in a very hot and dense plasma "fluid" created to simulate conditions when the universe was about one millionths of a second old. The plasma was formed at a colossal 2 million degrees Kelvin temperatures within Brookhaven's...

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...

2005-08-01 05:30:00

Using high-speed collisions between gold atoms, scientists think they have re-created one of the most mysterious forms of matter in the universe -- quark-gluon plasma. This form of matter was present during the first microsecond of the Big Bang and may still exist at the cores of dense, distant stars. UC Davis physics professor Daniel Cebra is one of 543 collaborators on the research. His main role was building the electronic listening devices that collect information about the collisions, a...