Pairing enhancement through the photography of the intermediate nucleus spectrum in a two-nucleon transfer process

While forming an (A+2) nucleus from a nucleus A via a two-neutron transfer reaction, the constructive interference of the many possible reaction channels favors significant pairing enhancement through the continuum of the intermediate (A+1) nucleus [Phys. Lett. B 834, 137413 (2022)]. I analyse this situation in more detail, from the point of view of a varying pairing field leading to the formation of (A+2) nucleus ⁶He, described as housing two-neutrons in orbitals of ⁵He. The naturally unbound scenario of the intermediate ⁵He is compared with two hypothetically bound cases. The different possible situations manifest that the continuum correlations are extremely crucial to the extension of the pairing enhancement observed in the system.