Generalized contact formalism analysis of the 4He(e,e′pN) reaction

• Published in: Physics letters. B Vol. 805; no. C; p. 135429
• Main Authors: Pybus, J.R., Korover, I., Weiss, R., Schmidt, A., Barnea, N., Higinbotham, D.W., Piasetzky, E., Strikman, M., Weinstein, L.B., Hen, O.
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.06.2020; Elsevier
• Subjects: NUCLEAR PHYSICS AND RADIATION PHYSICS; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/j.physletb.2020.135429

Measurements of short-range correlations in exclusive 4He(e,e′pN) reactions are analyzed using the Generalized Contact Formalism (GCF). We consider both instant-form and light-cone formulations with both the AV18 and local N2LO(1.0) nucleon-nucleon (NN) potentials. We find that kinematic distributions, such as the reconstructed pair opening angle, recoil neutron momentum distribution, and pair center of mass motion, as well as the measured missing energy, missing mass distributions, are all well reproduced by GCF calculations. The missing momentum dependence of the measured 4He(e,e′pN)/4He(e,e′p) cross-section ratios, sensitive to nature of the NN interaction at short-distacnes, are also well reproduced by GCF calculations using either interaction and formulation. This gives credence to the GCF scale-separated factorized description of the short-distance many-body nuclear wave-function.