Phenomenology of an extended Higgs portal inflation model after Planck 2013Fa Peng Huang, Chong Sheng Li, Ding Yu Shao and Jian WangEur. Phys. J. C, 74 8 (2014) 2990DOI: https://doi.org/10.1140/epjc/s10052-014-2990-4