{
  "id": "hep-ph/0606052",
  "version": "v1",
  "published": "2006-06-05T19:24:40.000Z",
  "updated": "2006-06-05T19:24:40.000Z",
  "title": "Using Spin Correlations to Distinguish Zh from ZA at the International Linear Collider",
  "authors": [
    "Gregory Mahlon",
    "Stephen Parke"
  ],
  "comment": "48 pages, 18 figures, revtex4",
  "journal": "Phys.Rev.D74:073001,2006",
  "doi": "10.1103/PhysRevD.74.073001",
  "categories": [
    "hep-ph"
  ],
  "abstract": "We investigate how to exploit the spin information imparted to the Z boson in associated Higgs production at a future linear collider as an aid in distinguishing between CP-even and CP-odd Higgs bosons. We apply a generalized spin-basis analysis which allowsus to study the possibilities offered by non-traditional choices of spin projection axis. In particular, we find that the Z bosons produced in association with a CP-even Higgs via polarized collisions are in a single transverse spin-state (>90% purity) when we use the Zh-transverse basis, provided that the Z~bosons are not ultra-relativistic (speed <0.9c). This same basis applied to the associated production of a CP-odd Higgs yields Z's that are an approximately equal mixture of longitudinal and transverse polarizations. We present a decay angular distribution which could be used to distinguish between the CP-even and CP-odd cases. Finally, we make a few brief remarks about how this distribution would be affected if the Higgs boson turns out to not be a CP-eigenstate.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2006-06-05T19:24:40.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "13.88.+e",
      "14.80.Bn",
      "13.38.Dg"
    ],
    "keywords": [
      "international linear collider",
      "spin correlations",
      "distinguish zh",
      "cp-odd higgs yields zs",
      "cp-odd higgs bosons"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 48,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 718520
    }
  }
}