Extremely rare Higgs boson decay process spotted

The Higgs boson reached overnight fame in 2012 when it was finally discovered in a jumble of other particles generated at CERN's Large Hadron Collider (LHC) in Geneva, Switzerland. The discovery was monumental because the ...

Researchers discover first 'open-charm' tetraquark

The LHCb experiment at CERN has developed a penchant for finding exotic combinations of quarks, the elementary particles that come together to give us composite particles such as the more familiar proton and neutron. In particular, ...

Calculating hadrons using supercomputers

Hadrons are elusive superstars of the subatomic world, making up almost all visible matter, and British theoretical physicist Antoni Woss has worked diligently with colleagues at the U.S. Department of Energy's Thomas Jefferson ...

Chasing particles with tiny electric charges

All known elementary particles have electric charges that are integer multiples of a third of the electron charge. But some theories predict the existence of "millicharged" elementary particles that would have a charge much ...

CERN: physicists report the discovery of unique new particle

The LHCb collaboration at CERN has announced the discovery of a new exotic particle: a so-called "tetraquark". The paper by more than 800 authors is yet to be evaluated by other scientists in a process called "peer review", ...

Probing dark matter with the Higgs boson

Visible matter—everything from pollen to stars and galaxies—accounts for roughly 15% of the total mass of the universe. The remaining 85% is made of something entirely different from things we can touch and see: dark ...

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