In this paper, we consider large non-Gaussianity generated after D-term inflation in the case that the adiabatic curvature perturbation produced is dominated by a right-handed (RH) sneutrino curvaton. The cosmic string problem can also be evaded with around 10% contribution to the CMB power spectrum and the spectral index $n_s \simeq 1$. The non-Gaussianity produced can be as large as $10<f_{ NL}<100$ for the right-handed sneutrino mass being around $m_\Phi=10 { GeV}$ with the Yukawa coupling $\lambda_\nu \sim 10^{ -10}$. In this case, the lightest neutrino mass is $10^{ -10}{ eV}$ which favors RH sneutrino leptogenesis.
Categories: hep-ph astro-ph.CO hep-th