## Abstract

We revisit a single-field new inflation model based on a discrete R symmetry. Interestingly, the inflaton dynamics naturally leads to a heavy gravitino of mass m3/2=O(1-100)TeV, which is consistent with the standard-model like Higgs boson of mass m_{h}≃126GeV. However, the predicted spectral index n_{s}≈0.94 is in tension with the Planck result, n_{s}=0.9603±0.073. We show that the spectral index can be increased by allowing a small constant term in the superpotential during inflation. The required size of the constant is close to the largest allowed value for successful inflation, and it may be a result of a pressure toward larger values in the landscape. Alternatively, such constant term may arise in association with supersymmetry breaking required to cancel the negative cosmological constant from the inflaton sector.

Original language | English |
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Pages (from-to) | 21-26 |

Number of pages | 6 |

Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |

Volume | 727 |

Issue number | 1-3 |

DOIs | |

Publication status | Published - 2013 Nov 25 |

## ASJC Scopus subject areas

- Nuclear and High Energy Physics