Observation of large missing-momentum (e,e′p) cross-section scaling and the onset of correlated-pair dominance in nuclei
DOI
10.1103/PhysRevC.107.L061301
Document Type
Journal Article
Publication Date
6-1-2023
Publication Title
Physical Review C
Volume
107
Issue
6
ISSN
24699985
Abstract
We report the measurement of xB scaling in (e,e′p) cross-section ratios off nuclei relative to deuterium at large missing momentum of 350≤pmiss≤600 MeV/c. The observed scaling extends over a kinematic range of 0.7≤xB≤1.8, which is significantly wider than 1.4≤xB≤1.8 previously observed for inclusive (e,e′) cross-section ratios. The xB-integrated cross-section ratios become constant (i.e., scale) beginning at pmiss≈kF, the nuclear Fermi momentum. Comparing with theoretical calculations we find good agreement with generalized contact formalism calculations for high missing momentum (>375 MeV/c), suggesting the observed scaling results from interacting with nucleons in short-range correlated (SRC) pairs. For low missing momenta, mean-field calculations show good agreement with the data for pmiss
Open Access
Green Accepted
Preprint
Repository Citation
Korover, I., Denniston, A., Kiral, A., Schmidt, A., Lovato, A., Rocco, N., Nikolakopoulos, A., Weinstein, L., Piasetzky, E., Hen, O., Amaryan, M., Angelini, G., Atac, H., Baltzell, N., Barion, L., Battaglieri, M., Bedlinskiy, I., Benmokhtar, F., & Bianconi, A. (2023). Observation of large missing-momentum (e,e′p) cross-section scaling and the onset of correlated-pair dominance in nuclei. Physical Review C, 107 (6). https://doi.org/10.1103/PhysRevC.107.L061301