Add Yahoo as a preferred source to see more of our stories on Google. The particles that are in an atom: protons, neutrons and electrons The particles that are in protons and neutrons: quarks The four ...

The first-known observations of matter–antimatter asymmetry in a decaying composite subatomic particle that belongs to the baryon class are reported from the LHCb experiment located at the Large ...

When you push "start" on your microwave or computer, the device flips right on—but major physics experiments like the Large Hadron Collider at the European Organization for Nuclear Research, known as ...

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?

A search for one mysterious particle unexpectedly revealed evidence for two different structures that may belong to the bizarre family of exotic subatomic particles known as XYZ states. The findings ...