Many-body effects on nuclear short range correlations

We reveal nuclear many-body effects on short range correlations (SRCs) by ab initio no-core shell model calculations of the scaling factor a 2 . The factor a 2 characterizes the abundance of SRC pairs and is linearly related to the EMC effect. Our study employs the fifth-order N 4 LO chiral nuclear force without softening, enabling to distinguish the influences of nuclear states with different quantum numbers on SRCs. It is striking to find that a 2 is close in isobaric analog triplet states of neighboring nuclei but is reduced compared to the isospin singlet. This is explained as specific nuclear states suppress the formation of deuteron-like component.