Alpha-clustered hypernuclei and chiral SU(3) dynamics. (1st January 2014) - Hiyama, Emiko
Abstract: Selected light hypernuclei are studied using an $\alpha $ cluster model approach (the Hyper-THSR wave function) in combination with a density-dependent $\Lambda $ hyperon–nuclear interaction derived from chiral SU(3) effective field theory. This interaction includes important two-pion exchange processes involving $\Sigma N$ intermediate states and associated three-body mechanisms as well as effective mass and surface terms arising in a derivative expansion of the in-medium $\Lambda $ self-energy. Applications and calculated results are presented and discussed for $^{13}_{\Lambda }$ C and $_{\Lambda }^9$ Be. The lightest $\alpha $ clustered hypernucleus, $^5_{\Lambda }$ He, is also discussed in this context.