Abstract
We report on a precise measurement of double-polarization asymmetries in electron-induced breakup of He3 proceeding to pd and ppn final states, performed in quasi-elastic kinematics at Q2=0.25(GeV/c)2 for missing momenta up to 250MeV/c. These observables represent highly sensitive tools to investigate the electromagnetic and spin structure of He3 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 He3 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 language | English |
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Pages (from-to) | 117-121 |
Number of pages | 5 |
Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Volume | 788 |
DOIs | |
State | Published - Jan 10 2019 |
Bibliographical note
Publisher Copyright:© 2018 The Author
Keywords
- Double-polarization asymmetry
- Helium-3 nucleus
- Proton knock-out
ASJC Scopus subject areas
- Nuclear and High Energy Physics