Could the next generation of cosmology experiments exclude supergravity?

Abstract

Gravitinos are expected to be produced in any local supersymmetric model. Using their abundance prediction as a function of the reheating energy scale, it is argued that the next generation of Cosmic Microwave Background experiments could exclude supergravity or strongly favor "thermal-like" inflation models if B mode polarized radiation were detected. Galactic cosmic--ray production by evaporating primordial black holes is also investigated as a way of constraining the Hubble mass at the end of inflation. Subsequent limits on the gravitino mass and on the related grand unification parameters are derived.

8 pages, 5 figures, published version with minor changes, results unchanged

References in corpus (8)

• Wilkinson Microwave Anisotropy Probe (WMAP) First Year Observations: TE Polarization
• The primordial density perturbation in the curvaton scenario
• Detection of Polarization in the Cosmic Microwave Background using DASI
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Interpretation of the TT and TE Angular Power Spectrum Peaks
• Gravitational lensing as a contaminant of the gravity wave signal in CMB
• Natural Gravitino Dark Matter and Thermal Leptogenesis in Gauge-Mediated Supersymmetry Breaking Models
• Galactic Cosmic Rays from PBHs and Primordial Spectra with a Scale
• Antideuterons as a probe of primordial black holes

Cited by in corpus (8)

• Primordial Black Holes
• Gravitino production by primordial black hole evaporation and constraints on the inhomogeneity of the early Universe
• Fundamental Particle Structure in the Cosmological Dark Matter
• Flux of light antimatter nuclei near earth, induced by Cosmic Rays in the Galaxy and in the atmosphere
• Quantum Bound States Around Black Holes
• The flight of the GAPS prototype experiment
• Astrophysical Production of Microscopic Black Holes in a Low Planck-scale World
• Cosmological Probes for Supersymmetry