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Title: Dark Light-Higgs Bosons

Journal Article · · Physical Review Letters
 [1];  [2];  [3];  [4];  [5]
  1. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)
  2. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States); Department of Physics, University of California, Santa Barbara, California 93106 (United States)
  3. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States); HEP Division, Argonne National Laboratory, 9700 Cass Avenue, Argonne, Illinois 60439 (United States); KICP and Department of Physics, University of Chicago, 5640 South Ellis Avenue, Chicago Illinois 60637 (United States)
  4. Department of Physics, Princeton University, Princeton, New Jersey 08540 (United States)
  5. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States); Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China)

We study a limit of the nearly Peccei-Quinn-symmetric next-to-minimal supersymmetric standard model possessing novel Higgs and dark matter (DM) properties. In this scenario, there naturally coexist three light singletlike particles: a scalar, a pseudoscalar, and a singlinolike DM candidate, all with masses of order 0.1-10 GeV. The decay of a standard model-like Higgs boson to pairs of the light scalars or pseudoscalars is generically suppressed, avoiding constraints from collider searches for these channels. For a certain parameter window annihilation into the light pseudoscalar and exchange of the light scalar with nucleons allow the singlino to achieve the correct relic density and a large direct-detection cross section consistent with the DM direct-detection experiments, CoGeNT and DAMA/LIBRA, preferred region simultaneously. This parameter space is consistent with experimental constraints from LEP, the Tevatron, {Upsilon}, and flavor physics.

OSTI ID:
21562123
Journal Information:
Physical Review Letters, Vol. 106, Issue 12; Other Information: DOI: 10.1103/PhysRevLett.106.121805; (c) 2011 American Institute of Physics; ISSN 0031-9007
Country of Publication:
United States
Language:
English