The resulting mass of the proton, determined to be 1.007276466583 (15) (29) atomic mass units, is three times more precise than the presently accepted value.

Now, remember that the proton has three quarks inside it, which account for 9% of its mass. But there's something holding these quarks together inside the proton, stopping them from escaping.

A proton’s core consists of three valence quarks, but they contribute only a small fraction of the proton's mass. Most of the mass emerges from intricate quark dynamics and is primarily ...

Nuclear physicists may have finally pinpointed where in the proton a large fraction of its mass resides. A recent experiment has revealed the radius of the proton's mass that is generated by the ...

Only 1% of the mass of the proton comes from the Higgs field. ALICE scientists examine a process that could help explain the rest.

Scientists measure proton's mass with record precision Researchers measured the proton's mass at 1.007276466583 atomic mass units -- three times more precise than the currently accepted value.

Standard model gets right answer for proton, neutron masses Correct calculation strengthens theory of quark-gluon interactions in nuclear particles ...

Based on nuclear mirror symmetry, theorists predicted that proton number 14 should also be a magic number in its mirror nucleus, silicon-22 (8 neutrons and 14 protons).

The first precise mass measurements of an extremely short-lived and proton-rich nucleus, silicon-22, have revealed the “magic” – that is, unusually tightly bound – nature of nuclei containing 14 ...

An exotic cousin of the proton is caught in action again. But its measured mass doesn’t match previous results.

Protons and neutrons have a very similar mass, but protons are a bit lighter. Now think back to the experiment where the scientists fired charged particles at atoms of gold.