A new particle accelerator at Michigan State University is producing long-awaited results. It’s called the Facility for Rare Isotope Beams, and it was completed in January 2022. Researchers have published the first results from the linear accelerator in the journal Physics Review Letters.Continue reading “Nature’s Ultra-Rare Isotopes Can’t Hide from this New Particle Accelerator”
Physicists say they’ve found evidence in data from Europe’s Large Hadron Collider for three never-before-seen combinations of quarks, just as the world’s largest particle-smasher is beginning a new round of high-energy experiments.
The three exotic types of particles — which include two four-quark combinations, known as tetraquarks, plus a five-quark unit called a pentaquark — are totally consistent with the Standard Model, the decades-old theory that describes the structure of atoms.
In contrast, scientists hope that the LHC’s current run will turn up evidence of physics that goes beyond the Standard Model to explain the nature of mysterious phenomena such as dark matter. Such evidence could point to new arrays of subatomic particles, or even extra dimensions in our universe.Continue reading “LHC Scientists Find Three Exotic Particles — and Start Hunting for More”
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A decade ago, physicists wondered whether the discovery of the Higgs boson at Europe’s Large Hadron Collider would point to a new frontier beyond the Standard Model of subatomic particles. So far, that’s not been the case — but a new measurement of a different kind of boson at a different particle collider might do the trick.
That’s the upshot of fresh findings from the Collider Detector at Fermilab, or CDF, one of the main experiments that made use of the Tevatron particle collider at the U.S. Department of Energy’s Fermilab in Illinois. It’s not yet time to throw out the physics textbooks, but scientists around the world are scratching their heads over the CDF team’s newly reported value for the mass of the W boson.Continue reading “Weird! Measurement of W Boson Doesn’t Match Standard Model of Physics”
Using a new observatory, a team of Chinese astronomers have found over a dozen sources of ultra-high energy cosmic rays. And those sources aren’t from some distant, exotic corner of the cosmos. They come from our own backyard.Continue reading “Astronomers Have Tracked Down the Source of High Energy Cosmic Rays to Regions Within the Milky Way Itself”
Electromagnetism is one of the fundamental forces of the universe, responsible for everything from electric and magnetic fields to light. Originally, scientists believed that magnetism and electricity were separate forces. But by the late 19th century, this view changed, as research demonstrated conclusively that positive and negative electrical charges were governed by one force (i.e. magnetism).
Since that time, scientists have sought to test and measure electromagnetic fields, and to recreate them. Towards this end, they created electromagnets, a device that uses electrical current to induce a magnetic field. And since their initial invention as a scientific instrument, electromagnets have gone on to become a regular feature of electronic devices and industrial processes.
The number of protons defines an element, but the number of neutrons can vary. We call these different flavors of an element isotopes, and use these isotopes to solve some challenging mysteries in physics and astronomy. Some isotopes occur naturally, and others need to be made in nuclear reactors and particle accelerators.
Here’s another great video from Sixty Symbols featuring professor Ed Copeland giving his entertaining description of CERN, the “Mecca for physicists” and home of the famous Large Hadron Collider. (Hopefully it will tide you over until the latest news is presented on July 4 regarding the ongoing hunt for the ever-elusive Higgs field!) Enjoy.
“On each of these experiments there are something like 3,000 physicists involved. So they’re not all here at the same time, of course… the cafeteria would be a nightmare if that was the case.”
– Prof. Ed Copeland