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##### Study of the eta-Be-7 Interaction Near Threshold in p-Li-6 Fusion.

**Authors**: N.J. Upadhyay, N.G. Kelkar, K.P. Khemchandani, B.K. Jain.

**Ref.**: Int.J.Mod.Phys. **E18**, 1383-1388 (2009)

**Abstract**: We present a calculation for $eta$ production in the $p-^6Li$ fusion near threshold including the $eta-^7Be$ final state interaction (FSI). We consider the $^6Li$ and $^7Be$ nuclei as $alpha-d$ and $alpha-^3He$ clusters respectively. The calculations are done for the lowest states of $^7Be$ with $J = ({3over2}^-, {1over2}^-)$ resulting from the $L = $1 radial wave function. The $eta-^7Be$ interaction is incorporated through the $eta-^7Be$ $T-$matrix, constructed from the medium modified matrices for the $eta-^3He$ and $eta-alpha$ systems. These medium modified matrices are obtained by solving few body equations, where the scattering in nuclear medium is taken into account.