Recently, the energy spectrum of $^{ 10}$Li was measured upto 4.6 MeV, via one-neutron transfer reaction d($^{ 9}$Li, p)$^{ 10}$Li. Considering the ambiguities on the $^{ 10}$Li continuum spectrum with reference to new data, we report the configuration mixing in the ground state of the two-neutron halo nucleus $^{ 11}$Li for two different choices of the $^{ 9}$Li$+$n potential. For the present study, we employ a three-body (core$+$n$+$n) structure model developed for describing the two-neutron halo system by explicit coupling of unbound continuum states of the subsystem (core$+$n), and discuss the two-neutron correlations in the ground state of $^{ 11}$Li.
Categories: nucl-th