D{sub 6} family symmetry and cold dark matter at CERN LHC
- National Institute of Chemical Physics and Biophysics, Ravala 10, Tallinn 10143 (Estonia)
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.
- OSTI ID:
- 21010970
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 75, Issue 3; Other Information: DOI: 10.1103/PhysRevD.75.033001; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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