Nucleon-nucleon correlations and the single-particle strength in atomic nuclei

Abstract

We propose a phenomenological approach to examine the role of short- and long-range nucleon-nucleon correlations in the quenching of single-particle strength in atomic nuclei and their evolution in asymmetric nuclei and neutron matter. These correlations are thought to be the reason for the quenching of spectroscopic factors observed in $(\mathrm{e},{\mathrm{e}}^{\prime }\mathrm{p})$, $(\mathrm{p},2p)$ and transfer reactions. We show that the recently observed increase of the high-momentum component of the protons in neutron-rich nuclei is consistent with the reduced proton spectroscopic factors. Our approach connects recent results on short-range correlations from high-energy electron scattering experiments with the quenching of spectroscopic factors and addresses for the first time quantitatively this intriguing question in nuclear physics, in particular regarding its isospin dependence. We also speculate about the nature of a {\sl quasi-proton} (nuclear polaron) in neutron matter and its kinetic energy, an important quantity for the properties of neutron stars.

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• Spectroscopic factors in dripline nuclei
• Systematic reduction of the proton-removal cross section in neutron-rich medium-mass nuclei
• Nucleon-Nucleon Short-Ranged Correlations, $\beta$ Decay and the Unitarity of the CKM Matrix
• Probing the Z = 6 spin-orbit shell gap with (p,2p) quasi-free scattering reactions
• Single-proton removal reaction in the IQMD+GEMINI model benchmarked by elemental fragmentation cross sections of ${}^{29-33}\mathrm{Si}$ on carbon at $\sim$230~MeV/nucleon
• Perspectives on few-body cluster structures in exotic nuclei
• Studying Short-Range Correlations with Real Photon Beams at GlueX
• A Vision for the Science of Rare Isotopes
• Nucleon Short-Range Correlations and High-Momentum Dynamics: Implications on the Equation of State of Dense Matter
• Neutron Star Equation of State with Nucleon Short-Range Correlations: A Concise Review and Open Issues
• Measurement of muon neutrino induced charged current interactions without charged pions in the final state using a new T2K off-axis near detector WAGASCI-BabyMIND