1932 - Antimatter - The book of science

Antimatter
Asymmetry
Untestable hypotheses
Commentary

Antimatter

Paul Dirac developed a relativistic wave equation
that describes the behavior of electrons
and predicted the existence of antimatter.
Carl Anderson discovered the positron,
the antimatter particle corresponding to the electron,
recorded in a cloud chamber from a cosmic ray collision.
When particles of antimatter and matter interact
the mass of both particles is converted into energy
according to Einstein’s equation, its mass multiplied
by the square of the speed of light.

Asymmetry

Small amounts of antimatter are created throughout the universe
by high-energy cosmic rays, but it is immediately
annihilated by an equal amount of ordinary matter on contact.
If the creation of matter and antimatter were equally likely
why is antimatter so scarce in this universe?
Otherwise, why is it not equally likely? One can only say
that if it were equally likely then matter and antimatter
would have annihilated each other long before now.

Untestable hypotheses

Here I deny
the necessity
and sufficiency
of all our means
of seeing—
Many things
exist that we
cannot see
or, in seeing,
do not know.

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.