Light Higgs boson, light dark matter and gamma rays.
A light Higgs boson is preferred by M{sub W} and m{sub t} measurements. A complex scalar singlet addition to the standard model allows a better fit to these measurements through a new light singlet dominated state. It then predicts a light dark matter (DM) particle that can explain the signals of DM scattering from nuclei in the CoGeNT and DAMA/LIBRA experiments. Annihilations of this DM in the galactic halo, AA {yields} b{bar b}, c{bar c}, {tau}{sup +}{tau}{sup -}, lead to gamma rays that naturally improve a fit to the Fermi Large Area Telescope data in the central galactic regions. The associated light neutral Higgs boson may also be discovered at the Large Hadron Collider.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Science Foundation (NSF); Wisconsin Alumni Research Foundation
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 1004043
- Report Number(s):
- ANL-HEP-PR-10-39; TRN: US1100576
- Journal Information:
- Phys. Rev. D, Vol. 82, Issue 2010
- Country of Publication:
- United States
- Language:
- ENGLISH
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