tagged w/ gluon
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Today, the scientists running the Compact Muon Solenoid detector at the Large Hadron Collider reported some of the first signs of unexpected physics happening at the LHC. After tracking the particles that have spilled out of some collisions, the CMS collaboration has detected a correlation among the angles at which many of them escape the collision. This sort of behavior has been seen before, but only in heavy ion collisions, and the initial report is cautious about trying to draw a specific connection between the two. But, if the results hold up, they may tell us something about the internal structure of the proton, and where most of its mass comes from.
Heavy ion collisions, like those produced in Brookhaven's Relativistic Heavy Ion Collider, cause the particles that normally inhabit the nucleus to break down. Instead of a collection of protons and neutrons, their internal components—quarks and gluons—exist in a fluid-like state that is termed a quark-gluon plasma. This plasma is short lived, but it lasts long enough for the particles that fly out of it engage in interactions that link the angles at which they exit the plasma.Today, the scientists running the Compact Muon Solenoid detector at the Large Hadron... more
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The giant ALICE detector is already underway at CERN, and researchers are scrambling to add an electromagnetic calorimeter to capture jet-quenching, the newest way to look inside the quark-gluon plasma — the hot, dense state of matter that filled the earliest universe, which the Large Hadron Collider will soon recreate by slamming lead nuclei into one another. ...... http://www.makeahistory.com/index.php?option=com_content&view=article&id=165:meet-alice-new-cerns-giant-detector&catid=29:the-cms&Itemid=20The giant ALICE detector is already underway at CERN, and researchers are scrambling... more
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worrg
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added this
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3 years ago
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