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SUMMARY:Yukawa unification in SO(10) with light sparticle spectrum - Marci
 n Badziak (Cambridge)
DTSTART:20110616T150000Z
DTEND:20110616T160000Z
UID:TALK31576@talks.cam.ac.uk
CONTACT:Steve Chun Hay Kom
DESCRIPTION:In SO(10) SUSY GUT the top\, bottom and tau Yukawa couplings u
 nify at the GUT scale.  Yukawa unification (YU) prefers the negative sign 
 of parameter \\mu. However\, negative \\mu is typically disfavoured by the
  measurements of the muon anomalous magnetic moment (g-2). This is the rea
 son why most of the studies so far have been devoted to the case of positi
 ve \\mu. Those studies show that YU is very hard to obtain in a natural wa
 y when \\mu is positive. We study a model in which \\mu is negative\, as p
 referred by YU\, but SUSY contribution to (g-2) is positive (as preferred 
 by the experiment). The crucial feature of our model are non-universal gau
 gino masses which are assumed to be generated by the F-term vev which is a
  non-singlet representation of SO(10) transforming as 24-dimensional repre
 sentation under SU(5). It is shown that all the phenomenological constrain
 ts on this model can be easily satisfied while keeping SUSY spectrum light
  enough to be detected at the LHC and to explain (g-2) anomaly. Special em
 phasis is given to the interplay between constraints coming from BR(b->s\\
 gamma) and the muon anomalous magnetic moment.
LOCATION:Seminar Room B\, Rutherford Building\, Cavendish Laboratory
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