https://hackerpaper.kaipfister.de/p/hep-ex_0509008/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=23789479urn:hackerpapers:mention:hep-ex_0509008:23789479Fri, 10 Jul 2020 08:49:26 GMT<p>I hope to provide some perspective : The Standard Model (SM) is based on a specific number of free parameters, such as the masses of elementary particles, the number of generation of families (quarks, leptons/neutrinos) etc. Those parameters are not fixed by the theoritical model, in the SM they are free (I hope it is clear enough). They are inferred from the experimental data so that we have defined what they are now. The number of family of neutrinos was deduced for the first time in LEP experiments (in the 90s, the predecessor of LHC at CERN) : It was not known before whether there were 2…</p><p><a href="https://hackerpaper.kaipfister.de/p/hep-ex_0509008/">Paper and discussion history</a>. A mention is not an endorsement.</p>hep-ex