Breaking the symmetries of massive elementary particles were predicted in 1968 in an electro weak theory, but the HIggs boson hasnt been proven just yet, and it dosent take dark matter into account, but it is very interesting in trying to discover the early masses of the universe, one of my favorite expeirments is by a man named Stephen Miller from the University of Chicago, he did an experment on similar events of the birth of our universe. He got together all the "known" ( how do you determine what was known) particles from the very beggining of our universe, amino acids and similar particles that form a comet, carbon and other elements and he put them in a vaccum or tube and then he waited to try and see how long or if some forms of life would surface, some time went by and nothing, he was about to give up and then he decided to electrocute the vaccum or tube and you wouldnt believe but life surfaced, he noticed some algae starting to grow the next day, it is very interesting sorry long but the story is in Carl Sagan's Cosmos. enjoyed your TCP. Did you hear about this new article that just came out a few days ago on super giant massive black holes?