Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-10-29
Phys.Rev.Lett.80:3698-3701,1998
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, Revtex, includes 1 figure, major changes in text, arguments made more general, main conclusions unchanged, version ac
Scientific paper
10.1103/PhysRevLett.80.3698
Cosmic topological defects in a wide class of supersymmetric theories can simultaneously be sources of higgs particles of mass comparable to the supersymmetry breaking scale $\sim$ TeV, as well as superheavy gauge bosons of mass $\sim\eta$, where $\eta$ (>> 1 TeV) denotes the associated gauge symmetry breaking scale. For cosmic strings with $\eta\sim 10^{14}$ GeV, the higgs decay can account for the extragalactic diffuse gamma ray background above $\sim$ 10 GeV, while the gauge boson decay may explain the highest energy cosmic ray flux above $\sim 10^{11}$ GeV, provided that particle production is the dominant energy loss mechanism for cosmic strings, as recent simulations suggest. By the same token, cosmic strings with $\eta$ much above $\sim 10^{14}$ GeV will be ruled out.
Bhattacharjee Pijushpani
Shafi Qaisar
Stecker Floyd W.
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