Not sure where you are going with this - but the simple explanation of all is it cannot happen, due to conservation of spin.
Two half-spin fermions cannot fuse to form a half-spin neutron. Otherwise hydrogen would be unstable and spontaneously form neutrons. From: David Roberson I have a question that has bugged me for quite some time now and maybe one of you would humor me with a simple explanation. Do we have to consider the total energy required for a P + e to become a N to have to arise out of a non active material? Oh sure - if you have a relativistic beam line with which to arbitrarily convert energy into mass of any variety, such as creating a neutrino to carry away the extra spin - then you can do it; but the energy balance is so lop-sided that it is irrelevant for practical purposes. Once again, Widom Larsen theory is brain dead from start to finish. Jones
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