Browsing by Subject "Cosmic Strings"

Now showing items 1-4 of 4

B-L cosmic strings and baryogenesis

Bhattacharjee, P; Sahu, N; Yajnik, U.A (American Physical Society, 2004-10)

Cosmic strings arising from breaking of the $U(1)_{B-L}$ gauge symmetry that occurs in a wide variety of unified models can carry zero modes of heavy Majorana neutrinos. Decaying and/or repeatedly self-interacting closed ...
Baryogenesis via leptogenesis in presence of cosmic strings

Sahu, N; Bhattacharjee, P; Yajnik, U. A (Elsevier, 2006-09)

We study the effect on leptogenesis due to B L cosmic strings of a U1 extension of the Standard Model. The disappearance of closed loops of B L cosmic strings can produce heavy right handed neutrinos, N's, whose CP-asymmetric ...
Cosmic rays from cosmic strings and other topological defects

Bhattacharjee, P (World Scientific, 1995)

The model of origin of ultrahigh energy (UHE) (i.e., energy E~> 10sup/8 eV) cosmic rays from cosmic topological defects such as cosmic strings, magnetic monopoles, etc., is discussed. We discuss the general nature of the ...
TeV and Superheavy Particles from Supersymmetric Topological Defects, the Extragalactic γ-ray Background, and the Highest Energy Cosmic Rays

Bhattacharjee, P; Shafi, Qaisar; Stecker, F. W (The American Physical Society, 1998-04)

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 ...

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