Every time I write about particle physics, I encounter a moment of uncertainty about a quantity that, at first glance, ought to be clear. How many kinds of elementary particles should I say there are?

PHOENIX -- A race to first based turned into a violent collision that sent two players sprawling onto the field and, eventually, into the dugout. Arizona's Ildemaro Vargas and the Los Angeles Dodgers' ...

The violence of the collision felt more fit for a football gridiron than a baseball diamond. Los Angeles Dodgers lefty Max Muncy pulled a grounder down the line to Arizona Diamondbacks first baseman ...

New research explains how light can behave like a quantum fluid in semiconductors, opening up possibilities for new kinds of practical quantum light sources Photon condensation in semiconductor ...

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A new calculation helps narrow down the mass of the W boson, one of the heaviest fundamental particles in the universe ...