The atomic nucleus is made up of protons and neutrons ... no one has been able to reproduce with quark-gluon models the results of nuclear experiments at low energies when only protons and ...

A theoretical study by RIKEN physicists, published in Physics Letters B, has accurately determined the interaction between a ...

Neutron stars are some of the weirdest cosmic objects, and the greatest mysteries lie deep in their hearts. Neutron stars are ...

Shortly before its winter recess each November, the LHC switches from accelerating beams of protons to accelerating heavy atomic ... nucleus collisions, together with their antiparticles. The top ...

Answer: when it’s anywhere outside the atomic nucleus. That at least is the case ... of this is that there are only two viable sorts of quark composite: baryons, formed of three quarks (and ...

With the electron, proton, and neutron, scientists thought they had found the smallest atomic building blocks. This changed in 1963 when American physicist Murray Gell-Mann proposed his quark theory.

When a radioactive atom emits an alpha particle the mass number decreases by four and the atomic ... quark. This changes a neutron into a proton plus an electron. The proton stays in the nucleus ...