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

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:
; ;  [1];  [2]
  1. National Institute of Chemical Physics and Biophysics, Ravala 10, Tallinn 10143 (Estonia)
  2. (Japan)
Publication Date:
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.
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.
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.
@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}
}