According to Astrophysics, matter and antimatter would be the result of the explosion -the Big Bang- of a primordial photon, says cosmic singularity, vector of an incommensurable energy.
In the new theory developed here: pair matter/antimatter and photon would have the same composition: 3 charges of color which, separated in matter and antimatter, would be merged* in photon.
Proof was provided by the experience: the pair matter/antimatter and photon have the same composition in two different forms, because, in a mini-Big Bang, a photon of sufficient energy, has created a pair electron/positon and, in the opposite experience, a pair electron/positon is disintegrated into photons: 2 gamma opposite directions.
In addition, electron and positon turn in the opposite direction, as shown by the experience in which, if we reverse its direction of rotation, the electron becomes a positron. They are the same particle in reverse rotations and if they meet together, their rotations cancel themself and they become photons.
The animation, at the top of this site, view the phenomenon. The 3 charges of color of the electron are 3 peaks of an equilateral triangle in rotation, in the plan, around its center, it marks a stop to each complete rotation. Thus immobilized, 3 charges fall color at the center of the triangle, where they are transformed into a photon, which updates it immediately.
One can see, electron and photon have the same composition: 3 charges of color, distinct in the electron, confused in the photon. The same applies for the positon, if the triangle turns in the opposite direction. In addition to the pair electron/positron, two more are created by the Big Bang. Why?
In the first place, why did the electron represented by an equilateral triangle? Because it is the geometric interpreter of G3 group: the set of 6 permutations of 3 objets.
Here, the 3 objects are 3 charges of color, symbolized by a,b,c, 3 peaks of 6 equilateral triangles representing 6 permutations.
The 6 triangles are grouped by pairs: 2 triangles of opposite rotations, so the rotation a,c, b is the opposite sense a,b,c. The 6 permutations are listed below, followed by their 6 geometric representations:
{a,b,c}{a,c,b} {b,a,c,}{b,c,a} {c,b,a}{c,a,b}

The first 2 permutations represent the pair electron/positron. The 4 permutations following, 2 pairs of matter/antimatter -called "fossil" because of their seniority-, are the muon/antimuon and tau/antitau, symbolized by the triangle {b,a,c}/{b,c,a} et {c,b,a}/{c,a,b}.
The G3 group is the logical model of 6 permutations -probably successive because there are fossil- 3 charges of color.
Omnipresents, the 3 charges, called color, would have, not only the key of the enigma of the composition of the universe, but also that of its origin, that it would remain to find.
* Merged mean that the three charges of colour are in the same place at the same time, therefore each in each of two others.