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Paper   IPM / Physic / 12553
School of Physics
  Title:   A model for Vector Dark Matter
1.  Y. Farzan
2.  A. Rezaei Akbarieh
  Status:   Published
  Journal: JCAP
  Vol.:  10
  Year:  2012
  Pages:   026
  Supported by:  IPM
We construct a model based on a new U(1)X gauge symmetry and a discrete Z2 symmetry under which the new gauge boson is odd. The model contains new complex scalars which carry U(1)X charge but are singlets of the Standard Model. The U(1)X symmetry is spontaneously broken but the Z2 symmetry is maintained, making the new gauge boson a dark matter candidate. In the minimal version there is only one complex scalar field but by extending the number of scalars to two, the model will enjoy rich phenomenology which comes in various phases. In one phase, CP is spontaneously broken. In the other phase, an accidental Z2 symmetry appears which makes one of the scalars stable and therefore a dark matter candidate along with the vector boson. We discuss the discovery potential of the model by colliders as well as the direct dark matter searches.

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