Status of Supersymmetric Seesaw in SO(10) models

Understand

We report on the status of supersymmetric seesaw models in the light of recent experimental results on $\mu \to e + \gamma$, $\theta_{13}$ and the light Higgs mass at the LHC.

• SO(10)-like relations are assumed for neutrino Dirac Yukawa couplings and two cases of mixing, one large, PMNS-like, and another small, CKM-like, are considered.
• It is shown that for the large mixing case, only a small range of parameter space with moderate $\tan \beta$ is still allowed.
• This remaining region can be ruled out by an order of magnitude improvement in the current limit on BR($\mu \to e + \gamma$).