Full-coupled channel approach to S=−2s-shell hypernuclear systems

We describe full-coupled-channel ab initio calculations among the octet baryons for S=−2s-shell hypernuclei,  4ΛΛH,  5ΛΛH and  6ΛΛHe. The wave function includes ΛΛ, ΛΣ, NΞ and ΣΣ channels. Minnesota NN, D2′YN and Nijmegen model D simulated YY interactions are used. This is the first attempt to explore the few-body problem of the full-coupled channel scheme for A=4-6, S=−2 multistrangeness hypernuclear systems. Bound state solutions of the ΛΛ hypernuclei,  4ΛΛH,  5ΛΛH and  6ΛΛHe, are obtained.