Implications of CoGeNT and DAMA for light WIMP dark matter

Journal Article · Tue Jun 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.115005· OSTI ID:21407996

Fitzpatrick, A Liam ^[1]; Hooper, Dan ^[2]; Zurek, Kathryn M ^[3]

---

1. Department of Physics, Boston University, Boston, Massachusetts 02215 (United States)
2. Particle Astrophysics, Fermi National Accelerator Laboratory, Batavia, Illinois 60563 (United States)
3. Michigan Center for Theoretical Physics and Department of Physics, University of Michigan, Ann Arbor, Michigan 48109 (United States)

In this paper, we study the recent excess of low energy events observed by the CoGeNT Collaboration, and discuss the possibility that these events originate from the elastic scattering of a light (m{sub DM{approx}}5-10 GeV) weakly interacting massive particle (WIMP). We find that such a dark matter candidate may also be capable of generating the annual modulation reported by DAMA, without conflicting with the null results from other experiments, such as XENON10. The regions implied by CoGeNT and DAMA are also near those required to produce the two observed CDMS events. A dark matter interpretation of the CoGeNT and DAMA observations favors a region of parameter space that is especially attractive within the context of asymmetric dark matter models. In such models, the cosmological dark matter density arises from the baryon asymmetry of the Universe, naturally leading to the expectation that m{sub DM{approx}}1-10 GeV. We also discuss neutralino dark matter from extended supersymmetric frameworks, such as the next-to-minimal supersymmetric standard model. Lastly, we explore the implications of such a dark matter candidate for indirect searches, and find very encouraging prospects for experiments attempting to detect neutrino or gamma ray annihilation products.

• OSTI ID: 21407996
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 11; Other Information: DOI: 10.1103/PhysRevD.81.115005; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
ASYMMETRY
BARYONS
DENSITY
ELASTIC SCATTERING
GAMMA RADIATION
GEV RANGE 01-10
MODULATION
NEUTRINOS
NONLUMINOUS MATTER
SIMULATION
SPACE
STANDARD MODEL
SUPERSYMMETRY
UNIVERSE
WEAK INTERACTIONS
BASIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
GEV RANGE
GRAND UNIFIED THEORY
HADRONS
INTERACTIONS
IONIZING RADIATIONS
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATTER
PARTICLE INTERACTIONS
PARTICLE MODELS
PHYSICAL PROPERTIES
QUANTUM FIELD THEORY
RADIATIONS
SCATTERING
SYMMETRY
UNIFIED GAUGE MODELS