Bounds on the baryon/photon ratio due to our existence

Details Bounds on the baryon/photon ratio due to our existence Bounds on the baryon/photon ratio due to our existence

Mar 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980phlb...91...67n&link_type=abstract

Physics Letters B, Volume 91, Issue 1, p. 67-71.

Physics

1

Scientific paper

The existence of human beings to measure the ratio nB/nγ necessarily imposes severe bounds on it: 10-11 ~ O((me/MPlanck)1/2)<=nB/nγ<=O(α2)~10-4. Then in a large class of grand unified theories the existence of six flavours becomes un unavoidable necessity.

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