Nuclear Spectroscopy with Heavy Ion Nucleon Knockout and (p,2p) Reactions

Knockout reactions with heavy ion targets in inverse kinematics, as well as “quasi-free” (p,2p) and (p,pn) reactions are useful tools for nuclear spectroscopy. We report calculations on $\mathit{\text{ab-initio}}$ many-body wavefunctions based on the no-core shell model to study the nucleon removal reactions in light nuclei, including beryllium, carbon, and oxygen isotopic chains, and explore the importance of using an $\mathit{\text{ab-initio}}$ method. Our study helps clarifying how the extraction of spectroscopic factors from the experiments depend on the details of the many-body wavefunctions being probed. We show that recent advances with the ab-initio method can provide more insights on the spectroscopy information extracted from experiments.