Lepton flavour violating Higgs boson decays, image and image in the constrained image with large image Original Research Article

Realistic predictions are made for the rates of lepton flavour violating Higgs boson decays, image, image, image, image and image, via a top–down analysis of the minimal supersymmetric Standard Model (MSSM) constrained by image unification with right-handed neutrinos and large image. The third family neutrino Yukawa coupling is chosen to be of order 1, in this way our model bares a significant resemblance to supersymmetric image. In this framework the large PMNS mixings result in potentially large lepton flavour violation. Our analysis predicts image and image rates in the region (10−8–10−6) and (10−15–10−14), respectively. We also show that the rates for lepton flavour violating Higgs decays can be as large as 10−7. The non-decoupling nature of image is observed which leads to its decay rate becoming comparable to that for image for large values of image and image. We also find that the present bound on image is an important constraint on the rate of lepton flavour violating Higgs decays. The recently measured image–image mixing parameter image is also investigated.