{
  "id": "1707.09960",
  "version": "v1",
  "published": "2017-07-31T17:09:22.000Z",
  "updated": "2017-07-31T17:09:22.000Z",
  "title": "Standard Model with a Complex Scalar Singlet: Cosmological Implications and Theoretical Considerations",
  "authors": [
    "Cheng-Wei Chiang",
    "Michael J. Ramsey-Musolf",
    "Eibun Senaha"
  ],
  "comment": "15 pages, 12 figures",
  "categories": [
    "hep-ph"
  ],
  "abstract": "We analyze the theoretical and phenomenological considerations for the electroweak phase transition and dark matter in an extension of the Standard Model with a complex scalar singlet (cxSM). In contrast with earlier studies, we use a renormalization group improved scalar potential and treat its thermal history in a gauge invariant manner. We find that the parameter space consistent with a strong first order electroweak phase transition (SFOEWPT) and present dark matter phenomenological constraints is significantly restricted compared to results of a conventional, gauge non-invariant analysis. In the simplest variant of the cxSM, recent LUX data and a SFOEWPT require a dark matter mass close to half the mass of the Standard Model-like Higgs boson. We also comment on various caveats regarding the perturbative treatment of the phase transition dynamics.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-07-31T17:09:22.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "complex scalar singlet",
      "standard model",
      "theoretical considerations",
      "cosmological implications",
      "dark matter"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 15,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}