Comparing the Cosmological Critical Density of Neutralinos and Cold Dark Matter

Details Comparing the Cosmological Critical Density of Neutralinos and Cold Dark Matter Comparing the Cosmological Critical Density of Neutralinos and Cold Dark Matter

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.1201m&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #12.01; Bulletin of the American Astronomical Society, V

Mathematics

Logic

Scientific paper

Cosmological surveys conducted in the last decade have placed substantial constraints upon the cold dark matter (CDM) component of the universe. These surveys include NASA’s Wilkinson Microwave Anisotropy Probe and the Sloan Digital Sky Survey, which is exhaustively mapping the positions of clusters of galaxies out to >4 billion light years. These results place the CDM cosmological density in the range of 0.087 < ΩCDM h2 < 0.138 at the 99% confidence level. An ideal candidate for the CDM is the lowest mass, weakly interacting, neutral, long lived, suspersymmetric particle known as the neutralino, χ. As long as the neutralino conserves R parity exactly it will be stable. Here we examine the sensitivity of the neutralino cross section in a range of minimal supersymmetric models using the DarkSUSY algorithm. We do this under the constraint that the cosmological WIMP CDM contribution to the mass-energy density scales as Ωχh2 ≈ 1/<σv>, where the cross section, σ, is a calculable parameter in the DarkSUSY code, v is the relative velocity of the neutralino and the cross section target and < > indicates thermal averaging. We compare these neutralino densities to the observed CDM density to constrain the model parameter space. We gratefully acknowledge the Kentucky Space Grant Consortium and NASA for supporting this research.

Affiliated with

Also associated with

No associations

Rating

Comparing the Cosmological Critical Density of Neutralinos and Cold Dark Matter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Comparing the Cosmological Critical Density of Neutralinos and Cold Dark Matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comparing the Cosmological Critical Density of Neutralinos and Cold Dark Matter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1155333