182 citations · 971 across the 17 of their papers we have counts for
5 papers · 1 filter
The high energy cosmic ray spectrum from relic particle decay
Subir Sarkar, Ramon Toldra
It has been speculated that the recently detected ultra-high energy cosmic rays may originate from the decays of relic particles with mass of order GeV clustered in the h…
On the Cosmological Domain Wall Problem for the Minimally Extended Supersymmetric Standard Model
S. A. Abel, S. Sarkar, P. L. White
We study the cosmology of the Supersymmetric Standard Model augmented by a gauge singlet to solve the -problem and describe the evolution of the domain walls which are created d…
Cosmological Constraints on Perturbative Supersymmetry Breaking
S. A. Abel, S. Sarkar
We discuss the cosmology of string models with perturbative supersymmetry breaking at a scale of (TeV). Such models exhibit Kaluza-Klein like spectra and contain unstable…
Neutralino Dark Matter in a Class of Unified Theories
S. A. Abel, S. Sarkar, I. B. Whittingham
The cosmological significance of the neutralino sector is studied for a class of models in which electroweak symmetry breaking is seeded by a gauge singlet. Extensive use is made o…
Cosmic Neutrinos from Unstable Relic Particles
P. Gondolo, G. Gelmini, S. Sarkar
We derive constraints on the relic abundance of a generic particle of mass TeV which decays into neutrinos at cosmological epochs, using data from the Fréjus and I…