Light-by-light scattering is a very rare phenomenon in which two photons interact, producing another pair of photons. This process was among the earliest predictions of quantum electrodynamics (QED), the quantum theory of ...
General Physics
Mar 20, 2019
0
856
Protons are known to contain quarks and gluons. But are gluons behaving as expected?
General Physics
Feb 9, 2018
0
34
Physicists from the ATLAS experiment at CERN have found the first direct evidence of high energy light-by-light scattering, a very rare process in which two photons – particles of light – interact and change direction. ...
General Physics
Aug 15, 2017
7
1006
Proton collisions in the Large Hadron Collider often result in the production of "jets" of particles. These jets are a key element in the measurement of many processes, such as the decays of Higgs bosons or other exotic particles. ...
General Physics
May 3, 2017
0
19
You don't need to stand in front of a rifle to see the same physics of resistance in action – you can see it through everyday activities like riding your bike, or hopping in your car, or less everyday activities like going ...
General Physics
Mar 24, 2017
1
19
Roughly once a year, the smallest Large Hadron Collider (LHC) experiment, LHC-forward (LHCf), is taken out of its dedicated storage on the site near the ATLAS experiment, reinstalled in the LHC tunnel, and put to use investigating ...
General Physics
Nov 21, 2016
0
16
Shortly after the start of Run 2 at the Large Hadron Collider (LHC) at CERN in June 2015, scientists from DESY and their colleagues from the experiments CMS and ATLAS have performed a first important test of the Standard ...
General Physics
Aug 21, 2015
21
214
A space-based system that relies on lasers to generate and deliver energy to spacecraft has won a University of Alabama in Huntsville (UAH) professor a U.S. patent and could become a first-line defense against asteroids on ...
Engineering
Jun 9, 2015
1
140
(Phys.org)—With a circumference of 27 km (17 miles), the Large Hadron Collider (LHC) holds the claim of being the largest particle accelerator in the world, but it is far from being the only device of its kind. Currently ...
The Relativistic Heavy Ion Collider (RHIC), a powerful particle accelerator for nuclear physics research at the U.S. Department of Energy's Brookhaven National Laboratory, just shattered its own record for producing polarized ...
General Physics
Apr 14, 2015
0
2563
