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All Articles Tagged As: antimatter
 | Does antimatter weigh more than matter? UC Riverside physicists want to know. Their finding could explain why the universe seems to have no antimatter and why it is expanding at an ever increasing rate. In the lab, the researchers took the first step towards measuring the free fall of positronium -- a bound state between a positron and an electron. They separated the positron from the electron long enough to measure gravity's effect on them. ...> Full Article |
 | Why there is stuff in the universe is one of the long-standing mysteries of cosmology. A team of researchers working at NIST has just concluded a 10-year-long study of the fate of neutrons in an attempt to resolve the question, the most sensitive such measurement ever made. The universe, they concede, has managed to keep its secret for the time being, but they've succeeded in significantly narrowing the number of possible answers. ...> Full Article |
 | A University of Warwick physicist has produced a galaxy sized solution which explains one of the outstanding puzzles of particle physics, while leaving the door open to the related conundrum of why different amounts of matter and antimatter seem to have survived the birth of our universe. ...> Full Article |
 | Physicists at the University of California, Riverside report that they have discovered a new way to create positronium, an exotic and short-lived atom that could help answer what happened to antimatter in the universe, why nature favored matter over antimatter at the universe's creation. The method works at almost any temperature -- including very low temperatures. ...> Full Article |
 | An international research team led by Japan and that includes the University of Colorado Boulder may have taken a significant step in discovering why matter trumped antimatter at the time of Big Bang, helping to create virtually all of the galaxies and stars in the universe.
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Scientists at Imperial College London have made the most accurate measurement yet of the shape of the humble electron, finding that it is almost a perfect sphere, in a study published in the journal Nature today.
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The antimatter equivalent of helium nuclei has been produced by an international team of physicists, including two from UC Davis, working with the Relativistic Heavy Ion Collider at the US Department of Energy's Brookhaven National Laboratory in New York.
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 | Once regarded as the stuff of science fiction, antimatter -- the mirror image of the ordinary matter in our observable universe -- is now the focus of laboratory studies around the world.
While physicists routinely produce antimatter with radioisotopes and particle colliders, cooling these antiparticles and containing them for any length of time is another story.
Clifford Surko, a professor of physics at UC San Diego, is constructing what he hopes will be the world's largest antimatter container. ...> Full Article |
 | Scientists using NASA's Fermi Gamma-ray Space Telescope have detected beams of antimatter produced above thunderstorms on Earth, a phenomenon never seen before. ...> Full Article |
Physicists at the University of British Columbia and TRIUMF have proposed a unified explanation for dark matter and the so-called baryon asymmetry -- the apparent imbalance of matter with positive baryon charge and antimatter with negative baryon charge in the Universe.
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 | Berkeley Lab researchers have made crucial contributions to the ALPHA collaboration at CERN, an international team who have trapped and stored atoms of antihydrogen for the first time. The key is an octupole magnet proposed, designed, and tested at Berkeley Lab and UC Berkeley. ...> Full Article |
The results of a high-profile Fermilab physics experiment involving a University of Michigan professor appear to confirm strange 20-year-old findings that poke holes in the standard model, suggesting the existence of a new elementary particle: a fourth flavor of neutrino.
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Decays of B mesons in recent experiments at Fermilab result in excess matter over antimatter that exceeds expectations, based on the Standard Model of particle physics.
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 | Why is there matter in the universe and not antimatter, its opposite? Physicists at Fermi National Accelerator Laboratory, including John Ellison, a professor of physics at the University of California, Riverside, have announced that they may have an answer. ...> Full Article |
 | Working with highly sensitive photomultipliers, Indiana University nuclear physicist Hans-Otto Meyer identified new attributes to a phenomenon called cryogenic electron emission. ...> Full Article |
 | Ten Kent State University researchers are part of a team of international scientists who have discovered the most massive antinucleus discovered to date. They are part of an international team of scientists studying high-energy collision of gold ions at the Relativistic Heavy Ion Collidor, a 2.4 mile-circumference particle accelerator at the US Department of Energy's Brookhaven National Laboratory in Upton, N.Y. ...> Full Article |
 | Scientists are on the hunt for evidence of antimatter -- matter's arch nemesis -- left over from the very early Universe. New results using data from NASA's Chandra X-ray Observatory and Compton Gamma Ray Observatory suggest the search may have just become even more difficult. ...> Full Article |
Professor has taken a step toward simulating a type of matter found in the crusts of neutron stars, in the cores of gas giant planets, and in exotic plasmas thought to be present in the earliest universe.
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The quest to understand more about the mysterious neutrino particle which is thought to be responsible for this phenomenon has taken a major step forward.
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A new physics discovery explores why there is more matter than antimatter in the universe
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A new calculation, reported in the January 25, 2008 issue of Physical Review Letters, confirms the six-quark theory of particle-anti-particle asymmetry. This is the first complete calculation of this phenomenon to employ a highly accurate description of the quarks that adds a fifth dimension beyond those of space and time.
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 | Successes like this at a university reactor are actually starting to drive big ideas and big thoughts around the country and around the world. ...> Full Article |
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