Loading...
Please wait, while we are loading the content...
Similar Documents
Moduli dark matter and the search for its decay line using suzaku x-ray telescope
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kusenko, Alexander Loewenstein, Michael Yanagida, Tsutomu T. |
| Copyright Year | 2013 |
| Description | Light scalar fields called moduli arise from a variety of different models involving supersymmetry and/or string theory; thus their existence is a generic prediction of leading theories for physics beyond the standard model. They also present a formidable, long-standing problem for cosmology. We argue that an anthropic solution to the moduli problem exists in the case of small moduli masses and that it automatically leads to dark matter in the form of moduli. The recent discovery of the 125 GeV Higgs boson implies a lower bound on the moduli mass of about a keV. This form of dark matter is consistent with the observed properties of structure formation, and it is amenable to detection with the help of x-ray telescopes. We present the results of a search for such dark matter particles using spectra extracted from the first deep x-ray observations of the Draco and Ursa Minor dwarf spheroidal galaxies, which are darkmatter- dominated systems with extreme mass-to-light ratios and low intrinsic backgrounds. No emission line is positively detected, and we set new constraints on the relevant new physics. |
| File Size | 280060 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20130014486 |
| Archival Resource Key | ark:/13960/t4xh4m285 |
| Language | English |
| Publisher Date | 2013-04-09 |
| Access Restriction | Open |
| Subject Keyword | Astronomy String Theory Supersymmetry X Rays Dark Matter Dwarf Galaxies Higgs Bosons Cosmology Mass To Light Ratios X Ray Telescopes Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
