The decay products are well-predicted by the Standard Model, and usually proceed into 2 or 3 photons, depending on the relative spins of the electron and positron composing positronium.

Today, this model is known as the quantum model or the electron cloud model. The inner orbitals surrounding the atom are spherical but the outer orbitals are much more complicated.

Each model may answer some, or even all, the questions left open by the Standard Model. Many of them also influence the electron's dipole moment. The problem, of course, is that there isn’t much ...

ROLY-POLY An electron (illustrated) orbits an atom’s nucleus, with a cloud of other hypothetical subatomic particles that could squash the electron’s shape.But so far, measurements show that ...

What shape is an electron? The answer, believe it or not, has implications for our understanding of the entire universe, and could reveal whether there are mysterious particles still to be discovered.

A simple model of an atom with the nucleus of made of protons, which have a positive charge, and neutrons, ... These virtual particles form a “cloud” around an electron.

A new experiment pulled off the most precise measurement of an electron’s self-generated magnetic field—and the universe’s subatomic model is at stake.

We note that the electron-cloud radius is two orders of magnitude larger than the Debye length of the plasma, far beyond what is expected from a simple model of charge separation.