Dark light Higgs bosons.
- High Energy Physics
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, ?, and flavor physics.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Science Foundation (NSF); Fermi-McCormick Fellowship; National NSF of China
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 1018187
- Report Number(s):
- ANL-HEP-PR-10-48; TRN: US1103311
- Journal Information:
- Phys. Rev. Lett., Vol. 106, Issue Mar. 24, 2011
- Country of Publication:
- United States
- Language:
- ENGLISH
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