TeV and Superheavy Particles from Supersymmetric Topological Defects, the Extragalactic γ-ray Background, and the Highest Energy Cosmic Rays

Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/3169

Title:	TeV and Superheavy Particles from Supersymmetric Topological Defects, the Extragalactic γ-ray Background, and the Highest Energy Cosmic Rays
Authors:	Bhattacharjee, P Shafi, Qaisar Stecker, F. W
Keywords:	Cosmic Topological Defects Supersymmetric Theories Extragalactic Diffuse Cosmic Ray Cosmic Strings Massive Particle Radiation
Issue Date:	Apr-1998
Publisher:	The American Physical Society
Citation:	Physical Review Letters, Vol. 80, No. 17, pp. 3698 - 3701
Abstract:	Cosmic topological defects in a wide class of supersymmetric theories can simultaneously be sources of Higgs bosons of mass~supersymmetry breaking scale~TeV, as well as superheavy gauge bosons of mass~η>>1 TeV, η being the gauge symmetry breaking scale. Decay of these Higgs and gauge bosons may contribute significantly to the extragalactic diffuse γ-ray background (EDGRB) above ~10 GeV and explain the highest energy cosmic ray (HECR) flux above ~10/Sup11 GeV, respectively. Cosmic strings with η much above 10/Sup14 GeV overproduce both HECR and EDGRB, and hence are ruled out, if massive particle radiation is their dominant energy loss mechanism.
URI:	http://hdl.handle.net/2248/3169
ISSN:	0031-9007
Appears in Collections:	IIAP Publications

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