D{sub 6} family symmetry and cold dark matter at CERN LHC

doi:10.1103/PHYSREVD.75.033001

Title: D{sub 6} family symmetry and cold dark matter at CERN LHC

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Abstract

We consider a nonsupersymmetric extension of the standard model with a family symmetry based on D{sub 6}xZ{sub 2}xZ{sub 2}, where one of Z{sub 2}'s is exactly conserved. This Z{sub 2} forbids the tree-level neutrino masses and simultaneously ensures the stability of cold dark matter candidates. From the assumption that cold dark matter is fermionic we can single out the D{sub 6} singlet right-handed neutrino as the best cold dark matter candidate. We find that an inert charged Higgs with a mass between 300 and 750 GeV decays mostly into an electron (or a positron) with a large missing energy, where the missing energy is carried away by the cold dark matter candidate. This will be a clean signal at LHC.

Authors:

Kajiyama, Yuji; Kubo, Jisuke; Okada, Hiroshi ^[1]; Institute for Theoretical Physics, Kanazawa University, Kanazawa 920-1192 ^[2]

National Institute of Chemical Physics and Biophysics, Ravala 10, Tallinn 10143 (Estonia)
(Japan)

Publication Date:: Thu Feb 01 00:00:00 EST 2007

OSTI Identifier:: 21010970

Resource Type:: Journal Article

Resource Relation:: Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevD.75.033001; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CERN LHC; ELECTRONS; GEV RANGE; HIGGS BOSONS; HIGGS MODEL; NEUTRINOS; NONLUMINOUS MATTER; PARTICLE IDENTIFICATION; PARTICLE PRODUCTION; POSITRONS; REST MASS; STANDARD MODEL; SYMMETRY

Citation Formats


                    Kajiyama, Yuji, Kubo, Jisuke, Okada, Hiroshi, and Institute for Theoretical Physics, Kanazawa University, Kanazawa 920-1192. D{sub 6} family symmetry and cold dark matter at CERN LHC.  United States: N. p., 2007. 
        Web.  doi:10.1103/PHYSREVD.75.033001.

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                    Kajiyama, Yuji, Kubo, Jisuke, Okada, Hiroshi, & Institute for Theoretical Physics, Kanazawa University, Kanazawa 920-1192. D{sub 6} family symmetry and cold dark matter at CERN LHC.  United States.  doi:10.1103/PHYSREVD.75.033001.

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                    Kajiyama, Yuji, Kubo, Jisuke, Okada, Hiroshi, and Institute for Theoretical Physics, Kanazawa University, Kanazawa 920-1192. Thu .  
        "D{sub 6} family symmetry and cold dark matter at CERN LHC".  United States.  
        doi:10.1103/PHYSREVD.75.033001.

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@article{osti_21010970,

  title        = {D{sub 6} family symmetry and cold dark matter at CERN LHC},

  author       = {Kajiyama, Yuji and Kubo, Jisuke and Okada, Hiroshi and Institute for Theoretical Physics, Kanazawa University, Kanazawa 920-1192},

  abstractNote = {We consider a nonsupersymmetric extension of the standard model with a family symmetry based on D{sub 6}xZ{sub 2}xZ{sub 2}, where one of Z{sub 2}'s is exactly conserved. This Z{sub 2} forbids the tree-level neutrino masses and simultaneously ensures the stability of cold dark matter candidates. From the assumption that cold dark matter is fermionic we can single out the D{sub 6} singlet right-handed neutrino as the best cold dark matter candidate. We find that an inert charged Higgs with a mass between 300 and 750 GeV decays mostly into an electron (or a positron) with a large missing energy, where the missing energy is carried away by the cold dark matter candidate. This will be a clean signal at LHC.},

  doi          = {10.1103/PHYSREVD.75.033001},

  journal      = {Physical Review. D, Particles Fields},

  number       = 3,

  volume       = 75,

  place        = {United States},

  year         = {Thu Feb 01 00:00:00 EST 2007},

  month        = {Thu Feb 01 00:00:00 EST 2007}

}

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DOI: 10.1103/PHYSREVD.75.033001

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