From the assumption of a universal upper limit for the temperature of about 1012 K which is suggested by the experiences of high energy physics, it follows taking additionally into account the strong interaction between hadrons explicitly that in the earliest stage of the Universe the numbers of nucleon number by a factor of about 107. Accordingly the 3K background radiation, is generated for the most part by annihilation of nearly all primordial heavy particles.
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Dehnen, H., Hönl, H. On the origin of the background radiation. Astrophys Space Sci 36, 473–478 (1975). https://doi.org/10.1007/BF00645270
- Strong Interaction
- Energy Physic
- Background Radiation
- Heavy Particle