Next week, the experiments at the Large Hadron Collider (LHC) will be back in action, taking data for the accelerator's second run. The detectors were shut down two years ago for maintenance and refurbishment in preparation ...
General Physics
Jun 1, 2015
0
45
Shortly following the Big Bang, the Universe was filled with a chaotic primordial soup of quarks and gluons, particles which are now trapped inside of protons and neutrons. Study of this quark-gluon plasma requires the use ...
General Physics
Mar 11, 2015
6
55
If you want to unravel the secrets of proton spin, put a "twist" in your colliding proton beams. This technique, tried and perfected at the Relativistic Heavy Ion Collider (RHIC)—a particle collider and U.S. Department ...
General Physics
Feb 11, 2015
0
28
What causes a proton to spin? This fundamental question has been a longstanding mystery in particle physics, although it was once thought that the answer would be fairly straightforward: The spin of a proton's three subatomic ...
General Physics
Aug 14, 2014
12
2
Observing a phenomenon for the first time helps us fine-tune our understanding of the Universe. CMS physicists found such a phenomenon in September 2012 in proton-lead collisions, an observation that has since been reinforced ...
General Physics
Jun 4, 2013
0
0
Why did the journal Science name the Higgs boson – an elementary particle – last year's most important discovery? And why did it need something as enormous as the Large Hadron Collider, about 27 kilometers in diameter, ...
General Physics
May 31, 2013
11
0
The new year brings a new type of collision at the LHC: the accelerator will smash protons and lead nuclei together, allowing CMS and the other LHC experiments to study the cold nuclear matter we expect these collisions to ...
General Physics
Jan 21, 2013
7
0
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 ...
General Physics
Dec 20, 2012
0
0
In the vast particle landscape, there are, to borrow a phrase, known knowns (the Standard Model, for example), unknown unknowns (exotic extensions of the Standard Model and beyond), and those ever-interesting known unknowns. ...
General Physics
Dec 20, 2012
0
0
(Phys.org)—This morning CERN completed the first LHC proton run. The remarkable first three-year run of the world's most powerful particle accelerator was crowned by a new performance milestone. The space between proton ...
General Physics
Dec 17, 2012
1
0
