On the origin of the background radiation

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.