Particle Physics News

Physicists Confirm Discovery of Four-Quark Hadron

April 14, 2014

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The Large Hadron Collider beauty collaboration has confirmed the existence of exotic hadron with two quarks, two anti-quarks. Physicists in Syracuse University’s College of Arts and Sciences have helped confirm the existence of exotic hadrons — a type of matter that cannot be classified within the traditional quark model. Their finding is the subject of […]

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High-Precision Measurement of the Electron is More Precise by a Factor of 13

February 28, 2014

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Physicists from the Max Planck Institute have achieved a high-precision measurement of the atomic mass of the electron, 13 times more precise than previously known. Electrons are the quantum glue of our world. Without electrons there would be no chemistry, and light would be unable to interact with matter. If electrons were only a little […]

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SLAC Scientists Create Artificial Cosmic-Ray Air Showers

February 11, 2014

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Researchers at the SLAC National Accelerator Laboratory are set to test an experiment that mimics what happens when incredibly energetic particles hit our atmosphere. In a SLAC test facility, scientists have set the stage for an experiment that mimics what happens when incredibly energetic particles hit our atmosphere. The players include the lab’s historic linear […]

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Astronomers Accurately Measure the Mass of Neutrinos for the First Time

February 10, 2014

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Astronomers from the universities of Nottingham and Manchester have accurately measured the mass of neutrinos for the first time. Scientists have solved a major problem with the current standard model of cosmology by combining results from the Planck spacecraft and measurements of gravitational lensing to deduce the mass of ghostly sub-atomic particles called neutrinos. The […]

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CERN Antimatter Experiment Produces First Beam of Antihydrogen

January 22, 2014

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A newly published study describes the how the ASACUSA experiment at CERN produced a beam of antihydrogen atoms for the first time. The ASACUSA experiment at CERN has succeeded for the first time in producing a beam of antihydrogen atoms. In a paper published in Nature Communications, the ASACUSA collaboration reports the unambiguous detection of […]

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LUX Dark Matter Detector Completes First 90-Days of Operation

October 31, 2013

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With its first 90-days of operation completed, researchers at the Large Underground Xenon experiment are reporting that LUX has demonstrated a sensitivity that is better than any previous experiment looking to detect dark matter particles directly. Providence, Rhode Island (Brown University) — In its first three months of operation, the Large Underground Xenon (LUX) experiment […]

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Physicists Develop a New Method to Accelerate Charged Particles

October 9, 2013

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Physicists at the Max Planck Institute have developed a new method that uses light to accelerate charged particles, leading the way for more compact particle accelerators. Modern particle accelerators measure up to several kilometers in size and cost billions of euros. But thanks to a new method they could shrink to less than 10 meters […]

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Scientists Use Partial Covariance Mapping to Probe Electron Dynamics

October 2, 2013

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Using a technique called partial covariance mapping, scientists gain new insight into the dynamics of “hollow atom” formation. In a detailed study of how intense light strips electrons from atoms, researchers used an X-ray laser, SLAC’s Linac Coherent Light Source (LCLS), to measure and sort the ejected electrons and discover how this process takes place. […]

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Physicists Create Coherent Beams of Twisted Light

September 19, 2013

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By using a beam of electrons, a team of accelerator physicists has found a new method to create coherent beams of twisted light. Scientists at SLAC have found a new method to create coherent beams of twisted light – light that spirals around a central axis as it travels. It has the potential to generate […]

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New Daya Bay Collaboration Results about the Transformations of Neutrinos

August 22, 2013

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Scientists from the Daya Bay Neutrino Experiment have announced the latest results, including high-precision measurement of subatomic shape shifting and new results on differences among neutrino masses. The international Daya Bay Collaboration has announced new results about the transformations of neutrinos – elusive, ghostlike particles that carry invaluable clues about the makeup of the early […]

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GERDA Experiment Phase I Results – No New Evidence That Neutrinos Are Their Own Antiparticles

July 22, 2013

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The phase I results from the GERDA experiment have revealed no signal of neutrino-less double beta decay in Ge-76, ruling out an earlier claim for a signal by others. Neutrinos are the most elusive particles having extremely weak interactions with all other particles. They have rather unusual properties and are even expected to be identical […]

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Discovery of Rare Decay Puts Standard Model to Stringent Test

July 19, 2013

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Researchers from the CMS and LHCb experiments at CERN’s Large Hadron Collider presented measurements of the decay of a Bs (pronounced B-sub-s) particle into two muons, putting the Standard Model of particle physics to one of its most stringent tests to date. After a quarter of a century of searching, physicists have discovered a rare […]

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