{
  "id": "0802.2510",
  "version": "v2",
  "published": "2008-02-18T16:24:55.000Z",
  "updated": "2008-12-30T12:30:19.000Z",
  "title": "Some consequences of a Higgs triplet",
  "authors": [
    "Paramita Dey",
    "Anirban Kundu",
    "Biswarup Mukhopadhyaya"
  ],
  "comment": "Revised version, 25 pages, 4 figures",
  "journal": "J.Phys.G36:025002,2009",
  "doi": "10.1088/0954-3899/36/2/025002",
  "categories": [
    "hep-ph"
  ],
  "abstract": "We consider an extension of the scalar sector of the Standard Model with a single complex Higgs triplet $X$. Such extensions are the most economic, model-independent way of generating neutrino masses through triplet interactions. We show that a term like $\\azero\\Phi\\Phi X^\\dag$ must be included in the most general potential of such a scenario, in order to avoid a massless neutral physical scalar. We also demonstrate that $\\azero$ must be real, thus ruling out any additional source of CP-violation. We then examine the implications of this term in the mass matrices of the singly-and doubly-charged scalar, neutral scalar and pseudoscalar fields. We find that, for small values of $\\azero/\\vtwo$, where $\\vtwo$ is the triplet vev, the spectrum allows the decay of heavier scalars into lighter ones via gauge interactions. For large $\\azero/\\vtwo$, the doubly-charged, singly-charged and neutral pseudoscalar bosons become practically degenerate, while the even-parity neutral scalars remain considerably lighter, thus emphasizing the possibility of decay of the singly-charged or neutral pseudoscalar states into the neutral scalars. Constraints from the $\\rho$-parameter are used to find nontrivial limits on the charged Higgs mass depending on $\\azero$. We also study the couplings of the various physical states in this scenario. For small values of $|\\azero|/\\vtwo$, we find the lightest neutral scalar field to be triplet-dominated, and thus having extremely suppressed interactions with fermion as well as gauge boson pairs.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2008-12-30T12:30:19.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.60.Fr",
      "14.80.Cp"
    ],
    "keywords": [
      "consequences",
      "neutral scalars remain considerably lighter",
      "small values",
      "lightest neutral scalar field",
      "single complex higgs triplet"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Journal of Physics G Nuclear Physics",
      "year": 2009,
      "month": "Feb",
      "volume": 36,
      "number": 2,
      "pages": "025002"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 25,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 779615,
      "adsabs": "2009JPhG...36b5002D"
    }
  }
}