How dark matter cares about topological superstrings

Abstract

Non-trivial toplogical properties of string world-sheets with three boundaries can give rise to superpotentials which preserve supersymmetry but violate R-symmetry by two units. This results in four point functions which permit s-wave annihilation of two neutralinos into gauge bosons. If the topological partition function is such as to allow saturation of the WMAP dark matter density for low string scales (M_s ~ 2 TeV), the annihilation into monochromatic gamma rays is predicted to lie about a factor of 2 below the current H.E.S.S. measurement of gamma ray flux from the galactic center. Thus, it may be detectable in the next round of gamma ray observations.

Proceedings XVI International Symposium on Very High Energy Cosmic Ray Interactions (ISVHECRI 2010); Fermilab, June28 to July 2, 2010; "Paper # C18"

References in corpus (9)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Particle Dark Matter: Evidence, Candidates and Constraints
• Results from the Final Exposure of the CDMS II Experiment
• First Dark Matter Results from the XENON100 Experiment
• Neutralino Annihilation into Two Photons
• High energy gamma rays from the massive black hole in the Galactic Center
• Dijet signals for low mass strings at the LHC
• Topological Masses From Broken Supersymmetry
• Neutralino dark matter annihilation to monoenergetic gamma rays as a signal of low mass superstrings