Physics Letters B
We report on a precise measurement of double-polarization asymmetries in electron-induced breakup of 3He proceeding to pd and ppn final states, performed in quasi-elastic kinematics at Q2 = 0.25 (GeV/c)2 for missing momenta up to 250 MeV/c. These observables represent highly sensitive tools to investigate the electromagnetic and spin structure of 3He and the relative importance of two- and three-body effects involved in the breakup reaction dynamics. The measured asymmetries cannot be satisfactorily reproduced by state-of-the-art calculations of 3He unless their three-body segment is adjusted, indicating that the spin-dependent part of the nuclear interaction governing the three-body breakup process is much smaller than previously thought.
Original Publication Citation
Mihovilovič, M., Jin, G., Long, E., Zhang, Y. W., Allada, K., Anderson, B., ... & Bradshaw, P. (2019). Measurement of double-polarization asymmetries in the quasi-elastic He→ 3 (e→, e′ p) process. Physics Letters B, 788, 117-121.
The Jefferson Lab Hall A Collaboration; Mihovilović, M.; Jin, G.; Long, E.; Zhang, Y.-W.; Allada, K.; Anderson, B.; Canan, M.; Golge, S.; and Schiavilla, R., "Measurement of Double-Polarization asymmetries in the Quasi-Elastic He→ 3 (e→, e′ p) Process" (2019). Physics Faculty Publications. 345.