Atomic nuclei are complex strongly interacting systems and their exact theoretical description is a long-standing challenge. An approximate description of nuclei can be achieved by separating its short and long range structure. This separation of scales stands at the heart of the nuclear shell model and effective field theories that describe the long-range structure of the nucleus using a mean-field approximation. We present here an effective description of the complementary short-range structure using contact terms and stylized two-body asymptotic wave functions. The possibility to extract the nuclear contacts from experimental data is presented. Regions in the two-body momentum distribution dominated by high-momentum, close-proximity, nucleon pairs are identified and compared to experimental data. The amount of short-range correlated (SRC) nucleon pairs is determined and compared to measurements. Non-combinatorial isospin symmetry for SRC pairs is identified. The obtained one-body momentum distributions indicate dominance of SRC pairs above the nuclear Fermi-momentum.
|Original language||American English|
|Number of pages||5|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - 10 May 2018|
Bibliographical noteFunding Information:
We would like to thank B. Bazak, W. Cosyn, C. Ciofi degli Atti, S. Gandolfi, G. Miller, E. Pazi, J. Ryckebush, M. Sargsian, M. Strikman, and L.B. Weinstein for many fruitful discussions. This work was supported by the Pazy foundation , the Israel Science Foundation (grant no. 136/12 , and 1334/16 ), and the U.S. Department of Energy Office of Science, Office of Nuclear Physics program under award number DE-FG02-94ER40818 .
© 2018 The Author(s)