Particle Physics

  1. Physics

    Elusive particle shows up in ‘semimetal’

    Weyl fermions, which resemble massless electrons, have been spotted inside tantalum arsenide. Their discovery comes 86 years after they were proposed.

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  2. pentaquark
    Particle Physics

    LHC reports pentaquark sightings

    Two particles discovered at the Large Hadron Collider are composed of five quarks, not two or three like nearly every other known quark-based particle.

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  3. CMS collision illustration
    Particle Physics

    LHC set to see beyond Higgs

    Physicists hope a revamped Large Hadron Collider will discover new particles and forces that could help explain dark matter and other mysteries of the universe.

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  4. effects of radiation on the brain
    Neuroscience

    Zipping to Mars could badly zap brain nerve cells

    Charged particles like the ones astronauts might encounter wallop the brain, mouse study suggests.

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  5. Lightning illuminates the sky during a storm in Weld County, Colo.
    Earth

    Cosmic rays illuminate lightning

    Radio waves emitted by particles zipping through thunderstorms allow physicists to probe thunderclouds and, perhaps eventually, learn what triggers lightning strikes.

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  6. Particle Physics

    Particle hunting in space, life in the urban jungle and more reader feedback

    Readers discuss wheat's journey to England, share stories about urban wildlife and more.

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  7. The AMS on the ISS
    Astronomy

    Cosmic rays misbehave in space station experiment

    A puzzling feature in a new cosmic ray census may force physicists to rethink which cosmic objects send these speedy particles hurtling across the galaxy.

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  8. Particle Physics

    Exotic particle turns out to be quark molecule

    Subatomic particles made of quarks can bind together to form molecules, according to a computer simulation of a long-studied mysterious particle.

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  9. Alpha Magnetic Spectrometer
    Particle Physics

    Sam Ting tries to expose dark matter’s mysteries

    Particle physicist Sam Ting is applying a meticulous approach to analyzing positrons in space, testing whether they can reveal clues about dark matter.

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  10. Cern's COMPASS experiment
    Particle Physics

    New particle may be made of four quarks

    A newly discovered particle may be comprised of four quarks, a new study posits.

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  11. Neutrino tracks from IceCube experiment
    Particle Physics

    Year in review: Neutrinos leave tracks in ice

    The IceCube experiment has started to pinpoint the birthplaces of some high-energy neutrinos.

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  12. Particle Physics

    Two new particles found at Large Hadron Collider

    Physicists with the Large Hadron Collider beauty experiment have identified two new particles called Xi_b'- and Xi_b*-.

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