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Higgs portal to inflation and fermionic dark matter

Aditya Aravind^1,*, Minglei Xiao^1,†, and Jiang-Hao Yu^1,2,‡

¹Department of Physics and Texas Cosmology Center, The University of Texas at Austin, Texas 78712, USA
²Amherst Center for Fundamental Interactions, Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, USA

^*aditya.phy@utexas.edu
^†jerryxiao@physics.utexas.edu
^‡jhyu@physics.umass.edu

Phys. Rev. D 93, 123513 – Published 8 June, 2016Erratum Phys. Rev. D 96, 069901 (2017)

DOI: https://doi.org/10.1103/PhysRevD.93.123513

Abstract

We investigate an inflationary model involving a gauge singlet scalar and fermionic dark matter. The mixing between the singlet scalar and the Higgs boson provides a portal to dark matter. The inflaton could either be the Higgs boson or the singlet scalar, and slow roll inflation is realized via its nonminimal coupling to gravity. In this setup, the effective scalar potential is stabilized by the mixing between two scalars and coupling with dark matter. We study constraints from collider searches, relic density and direct detection, and find that dark matter mass should be around half the mass of either the Higgs boson or singlet scalar. Using the renormalization group equation improved scalar potential and putting all the constraints together, we show that the inflationary observables $n_{s} - r$ are consistent with current Planck data.

Physics Subject Headings (PhySH)

Erratum

Erratum: Higgs portal to inflation and fermionic dark matter [Phys. Rev. D 93, 123513 (2016)]

Aditya Aravind, Minglei Xiao, and Jiang-Hao Yu

Phys. Rev. D 96, 069901 (2017)

Article Text

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