http://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. In 2011, CMS presented early evidence that Upsilon (Υ) particles produced in lead-lead collisions "melt" as a consequence of interacting with the hot nuclear matter created in these heavy-ion interactions. CMS has since updated and extended this result using additional data collected in the 2011 heavy-ion run, and the observation now has a significance of greater than 5σ (or 5 standard deviations), the gold standard for claiming a discovery in high-energy physics. http://phys.org/news275209634.html Physics Thu, 20 Dec 2012 07:07:37 EST news275209634 Collisions between protons and lead ions at the Large Hadron Collider (LHC) have produced surprising behavior in some of the particles created by the collisions. The new observation suggests the collisions may have produced a new type of matter known as color-glass condensate. http://phys.org/news273220389.html Physics Tue, 27 Nov 2012 06:33:23 EST news273220389 Heavy ion collisions at CERN should be able to produce the shortest light pulses ever created. This was demonstrated by computer simulations at the Vienna University of Technology. The pulses are so short that they cannot even be measured by today's technological equipment. Now, a method has been proposed to create the world's most precise stopwatch for the world's shortest light pulses, using a detector which is going to be installed at CERN in 2018. http://phys.org/news271871550.html Physics Mon, 12 Nov 2012 04:00:02 EST news271871550 Ultra hot quark-gluon-plasma, generated by heavy-ion collisions in particle accelerators, is supposed to be the "most perfect fluid" in the world. Previous theories imposed a limit on how "liquid" fluids can be. Recent results at the Vienna University of Technology suggest that this limit can be broken -- making the world's "most perfect fluid" even more perfect. http://phys.org/news246021098.html Physics Tue, 17 Jan 2012 11:11:51 EST news246021098 The Large Hadron Collider shut down its proton beams on Nov. 4, 2010, and quickly began circulating beams of lead ions, a run scheduled to last a month. Within days, the first results from ALICE, the LHC experiment designed specifically to study heavy-ion collisions, were posted online. Two weeks after the start of the lead-lead run, CERN’s press office announced what it called “new insight into the primordial universe” from three LHC experiments, ALICE plus ATLAS and CMS. The latter are broad-coverage detectors which also have programs for investigating heavy-ion collisions. Finally the ALICE collaboration posted two more results, shortly before the LHC ended its lead-ion run on Dec. 6. http://phys.org/news211041918.html Physics Wed, 08 Dec 2010 14:45:40 EST news211041918 (PhysOrg.com) -- After less than three weeks of heavy-ion running, the three experiments studying lead ion collisions at the LHC have already brought new insight into matter as it would have existed in the very first instants of the Universe’s life. The ALICE experiment, which is optimised for the study of heavy ions, published two papers just a few days after the start of lead-ion running. Now, the first direct observation of a phenomenon known as jet quenching has been made by both the ATLAS and CMS collaborations. http://phys.org/news209979218.html Physics Fri, 26 Nov 2010 07:34:09 EST news209979218