Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-01-02
Phys.Rev. D55 (1997) 1752-1764
Physics
High Energy Physics
High Energy Physics - Phenomenology
23 LATEX pages, 4 Tables, 3 PostScript Figures included. Phys. Rev. D, to be published
Scientific paper
10.1103/PhysRevD.55.1752
The momentum transfer dependence of the total cross section for elastic scattering of cold dark matter candidates, i.e. lightest supersymmetric particle (LSP), with nuclei is examined. The presented calculations of the event rates refer to a number of representative nuclear targets throughout the periodic table and have been obtained in a relatively wide phenomenologically allowed SUSY parameter space. For the coherent cross sections it is shown that, since the momentum transfer can be quite big for large mass of the LSP and heavy nuclei even though the energy transfer is small ($\le 100 KeV$), the total cross section can in such instances be reduced by a factor of about five. For the spin induced cross section of odd-A nuclear targets, as is the case of $^{207}Pb$ studied in this work, we found that the reduction is less pronounced, since the high multipoles tend to enhance the cross section as the momentum transfer increases (for LSP $mass < 200 GeV$) and partially cancell the momentum retardation. The effect of the Earth's revolution around the sun on these event rates is also studied by folding with a Maxwellian LSP-velocity distribution which is consistent with its density in the halos. We thus found that the convoluted event rates do not appreciably change compared to those obtained with an average velocity. The event rates increase with A and, in the SUSY parameter space considered, they can reach values up to 140 $y^{-1}Kg^{-1}$ for Pb. The modulation effect, however, was found to be small (less than $\pm 5%$).
Kosmas T. S.
Vergados John D.
No associations
LandOfFree
Cold Dark Matter in SUSY Theories. The Role of Nuclear Form Factors and the Folding with the LSP Velocity 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 Cold Dark Matter in SUSY Theories. The Role of Nuclear Form Factors and the Folding with the LSP Velocity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cold Dark Matter in SUSY Theories. The Role of Nuclear Form Factors and the Folding with the LSP Velocity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-560659