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

Journal Article · Thu Feb 01 00:00:00 EST 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.033001· OSTI ID:21010970

Kajiyama, Yuji; Kubo, Jisuke; Okada, Hiroshi ^[1]

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1. 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

Related Subjects

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