2018/03/20 by Donal B. Day Leonid L. Frankfurt, Frankfurt, Donal B. Day Leonid L., Misak Sargsian +3
Physics and Astronomy · #Nuclear physics research studies #Atomic and Molecular Physics #Dark Matter and Cosmic Phenomena
paper · pdf · doi:10.48550/arxiv.1803.07629
We present a detailed study of kinematical and dynamical conditions necessary for probing highly elusive three-nucleon short range correlations~(3N-SRCs) in nuclei through inclusive electron scattering. The kinematic requirements that should be satisfied in order to isolate 3N-SRCs in inclusive processes are derived. We demonstrate that a sequence of two short-range NN interactions represents the main mechanism for 3N-SRCs in inclusive processes. Within this mechanism we predict a quadratic dependence of the inclusive cross section ratios of nuclei to 3He in the 3N-SRC region to the same ratio measured in 2N-SRC domain. The extended analysis of the available data satisfying the necessary 3N-SRC kinematical conditions is presented. This analysis provides tantalizing signatures of scaling associated with the onset of 3N-SRC dominance. The same data are also consistent with the prediction of the quadratic relation between the ratios measured in the 3N and 2N-SRC regions for nuclei ranging 4 ≤ A ≤ 197. This agreement made it possible to extract a3(A), the probability of 3N-SRCs relative to the A=3 nucleus. We find a3(A) to be significantly larger in magnitude than the analogous parameter, a2(A), for 2N-SRCs.