Document Type

Article

Publication Date

1-2019

DOI

10.1016/j.physletb.2018.10.063

Publication Title

Physics Letters B

Volume

788

Pages

117-121

Abstract

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.

Comments

© 2018 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.

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.

ORCID

0000-0001-6049-6683 (Schiavilla)

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