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Introduction
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Supersymmetry(susy) has emerged as one of the leading candidates for unraveling the physics beyond the Standard Model(SM). The most challenging and longstanding questions in the context of supersymmetric theories are related to the mechanism of supersymmetry breaking. The need for susy breaking originates from the fact that no superparticle has yet been observed in nature. The fine tuning/gauge hierarchy problem points towards the requirement of the susy breaking scale being close to TeV so that the Higgs mass does not receive radiative corrections beyond TeV. As a result TeV scale supersymmetric theories have drawn special attentions in view of the forthcoming results in the LHC. A possible origin of these symmetry breaking terms can be understood by embedding MSSM in a supergravity theory (SUGRA)[@nilles; @gravmed2; @grav-app]. Supergravity theories drew further attention when they were shown to emerge as low energy effective theories of underlying string theories which can take care of the renormalizability problems persistent in the supergravity models.

In a plethora of supergravity models supersymmetry is assumed to be spontaneously broken at a high energies ($\sim 10^{11}~\rm GeV$) via the vacuum expectation value(VEV) of the $F$ or $D$ terms [@soni; @ibanez; @barbieri; @dudas; @burgess1]. Some 