The plot thickens for a hypothetical X17 particle

NOVEMBER 29, 2019 by Ana Lopes, CERN resh evidence of an unknown particle that could carry a fifth force of nature gives the NA64 collaboration at CERN a new incentive to continue searches. In 2015, a team of scientists spotted an unexpected glitch, or “anomaly”, in a nuclear transition that could be explained by the production of an […]

Etalumis ‘reverses’ simulations to reveal new science

Scientists already have robust simulation software packages that model the physics and everything that occurs within the detector. NOVEMBER 13, 2019 by Keri Troutman, Lawrence Berkeley National Laboratory Scientists have built simulations to help explain behavior in the real world, including modeling for disease transmission and prevention, autonomous vehicles, climate science, and in the search for […]

LHCf gears up to probe birth of cosmic-ray showers

What’s more, the experiment plans to measure forward particles emitted from collisions of protons with light ions, most likely oxygen ions.  NOVEMBER 11, 2019 by Ana Lopes, CERN Cosmic rays are particles from outer space, typically protons, travelling at almost the speed of light. When the most energetic of these particles strike the atmosphere of our […]

Physicists measure the variation of the top-quark mass for the first time

OCTOBER 8, 2019 by Ana Lopes, CERN For the first time, CMS physicists have investigated an effect called the “running” of the top quark mass, a fundamental quantum effect predicted by the Standard Model. Mass is one of the most complex concepts in fundamental physics, which went through a long history of conceptual developments. Mass was first […]

US ATLAS upgrade completed (phase I)

by Brookhaven National Laboratory The ATLAS experiment at CERN’s Large Hadron Collider (LHC) is ready to begin another chapter in its search for new physics. A significant upgrade to the experiment, called the U.S. ATLAS Phase I Upgrade, has received Critical Decision-4 approval from the U.S. Department of Energy (DOE), signifying the completion of the project and a […]