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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4529

Title: Gauge mediated supersymmetry breaking and the cosmology of the left-right symmetric model
Authors: MISHRA, S
YAJNIK, UA
SARKAR, A
Keywords: neutrino mass
domain-walls
majorana neutrinos
grand unification
parity violation
cosmic strings
r-parity
scale
baryogenesis
leptogenesis
Issue Date: 2009
Publisher: AMER PHYSICAL SOC
Citation: PHYSICAL REVIEW D, 79(6), -
Abstract: Left-right symmetry including supersymmetry presents an important class of gauge models which may possess natural solutions to many issues of phenomenology. Cosmology of such models indicates a phase transition accompanied by domain walls. Such walls must be unstable in order to not conflict with standard cosmology and can further be shown to assist with open issues of cosmology such as dilution of unwanted relic densities and leptogenesis. In this paper we construct a model of gauge mediated supersymmetry breaking in which parity breaking is also signaled along with supersymmetry breaking and so as to be consistent with cosmological requirements. It is shown that addressing all the stated cosmological issues requires an extent of fine-tuning, while in the absence of fine-tuning, leptogenesis accompanying successful completion of the phase transition is still viable.
URI: http://dx.doi.org/10.1103/PhysRevD.79.065038
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4529
http://hdl.handle.net/10054/4529
ISSN: 1550-7998
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