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SUMMARY:A new type of SO(10) grand unified family models - Dr Christoph Lu
 hn (Southampton)
DTSTART:20091126T160000Z
DTEND:20091126T170000Z
UID:TALK19389@talks.cam.ac.uk
CONTACT:Steve Chun Hay Kom
DESCRIPTION:We present a realistic grand unified theory of flavor based on
  SO(10) x PSL (2\,7)\, where the quarks and leptons in the 16 of SO(10) ar
 e assigned to the complex triplet representation of the discrete family sy
 mmetry PSL (2\,7). The flavons on the other hand are assigned to the sexte
 t and anti-triplet representations. Using a D-term vacuum alignment mechan
 ism\, one flavon sextets is aligned along the 3-3 direction leading to the
  third family Yukawa couplings\, while other sextets are aligned along the
  neutrino flavor symmetry preserving directions leading to the possibility
  of tri-bimaximal neutrino mixing via the type II see-saw mechanism. The s
 tructure of the neutrino mixing is thus a direct reflection of how the fam
 ily symmetry gets broken. Some phenomenological implications of this setup
  are discussed.
LOCATION:MR13\, CMS
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