Antimatter

1932

Antimatter

The book of science

Tom Sharp

Paul Dirac, Carl David Anderson physics

Antimatter

Asymmetry

Untestable hypotheses

The current theory is that matter and antimatter must be created in equal amounts, in pairs; however, in our universe matter vastly overwhelms antimatter. Was there a slight imbalance in the amounts created? Does antimatter decay faster than matter? Did all the antimatter get pushed to distant galaxies or sucked into a parallel universe?

Annihilation of an electron and a positron at rest produces two gamma ray photons; that is, annihilation produces pure energy; however, other types of matter-antimatter collisions are more complex. Annihilation of a proton and an antiproton produces mesons that decay into photons, positrons, electrons, and neutrinos.

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