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-mesic nuclei; few-body equations; time delay

We locate resonances inη-light nucleus elastic scattering using the time delay method. We solve few-body equations within the finite rank approximation in order to calculate the t-matrices and hence the time delay for theη-³He andη-⁴He systems. We find a resonance very close to the threshold inη-³He elastic scattering, at about 0.5 MeV above threshold with a width of ∼2 MeV. The calculations also hint at the presence of sub-threshold states in both the cases

K P Khemchandani¹ N G Kelkar² M Nowakowski² B K Jain¹

1. Department of Physics, University of Mumbai, Mumbai - 400 098, India
2. Departamento de Fisica, Universidad de los Andes, Bogota, Colombia