http://www.quantumdiaries.org/2012/06/08/neutrino-2012-day-3-4/ Thoughts on work and life from particle physicists from around the world. Thu, 16 May 2013 16:14:27 +0000 hourly 1 http://wordpress.org/?v=3.5.1 http://www.quantumdiaries.org/2012/06/08/neutrino-2012-day-3-4/#comment-71854 Terry Goldman Fri, 08 Jun 2012 22:10:53 +0000 http://www.quantumdiaries.org/?p=22834#comment-71854 The revisionist SM forgets the history that started the SM — quark-lepton symmetry. It predicted charm and when Perl found tau, it predicted t and b. It also predicts 3 sterile neutrinos — Weyl spinors with no SM quantum numbers. Unlike all other fermions, only these RH Weyl spinor partners to the active, LH Weyl spinor neutrinos can have their own Majorana mass as well as a Dirac mass coupling them to the LH actives. For 35 years, since the discovery of the see-saw mechanism, the only problem has been to determine the values of the parameters — NOT “adding” new states.

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