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Updated: May 14, 2026

Hyperpolarized Xenon for NMR and MRI Applications
Published on: September 6, 2012
Observation of the (Λ)(7)He hypernucleus by the (e, e'K+) reaction
S N Nakamura1, A Matsumura, Y Okayasu
1Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan.
Abstract:
An experiment with a newly developed high-resolution kaon spectrometer and a scattered electron spectrometer with a novel configuration was performed in Hall C at Jefferson Lab. The ground state of a neutron-rich hypernucleus, (Λ)(7)He, was observed for the first time with the (e, e'K+) reaction with an energy resolution of ~0.6 MeV. This resolution is the best reported to date for hypernuclear reaction spectroscopy. The (Λ)(7)He binding energy supplies the last missing information of the A = 7, T = 1 hypernuclear isotriplet, providing a new input for the charge symmetry breaking effect of the ΛN potential.
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