Year: 2026
Type: article
Abstract: High-precision spectroscopy of $$\Lambda $$ hypernuclei provides essential information on the $$\Lambda N$$ interaction and on the structure of strange nuclear many-body systems. It is also closely related to current topics in few-body physics and nuclear astrophysics, including charge-symmetry breaking in $$\Lambda $$ hypernuclei, the hypertriton puzzle, possible neutron-rich light hypernuclear systems, and the hyperon puzzle in neutron stars. In this article, I review ongoing and planned spectroscopic studies of $$\Lambda $$ hypernuclei with complementary probes at JLab, MAMI, and J-PARC. Electron-induced reactions such as $$(e,e'K^+)$$ offer excellent absolute energy calibration and high-resolution spectroscopy for light-to-heavy hypernuclei. Decay-pion spectroscopy of electroproduced hypernuclei provides a powerful method for precise binding-energy studies of light systems, particularly the hypertriton. At J-PARC, the planned High-Intensity, High-Resolution beamline will enable high-intensity, high-resolution $$(\pi ^+,K^+)$$ spectroscopy over a wide mass range and open a path toward a hypernuclear factory. The complementarity of these approaches will play a key role in establishing a comprehensive and precise picture of $$\Lambda $$ hypernuclear structure from few-body systems to heavy hypernuclei.
Source: Few-Body Systems
Author: Satoshi N. Nakamura
Institution: The University of Tokyo
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,290
Funders: National Science Foundation, U.S. Department of Energy, Japan Society for the Promotion of Science London, European Commission, Deutsche Forschungsgemeinschaft, National Natural Science Foundation of China, University of Tokyo, Japan Society for the Promotion of Science, National Key Research and Development Program of China, Thomas Jefferson National Accelerator Facility
Awards: G102163711, G1336448005, G1477787789, G1728142190, ELECTROPRODUCTION OF STRANGE PARTICLES AT JEFFERSON LAB, G2188849882, G222768804, G2263355576, G2552322537, G262962599, G2652705316, G2702141073, SELECTED PROBLEMS IN HYPERNUCLEAR PHYSICS, G2988778103, G3030300266, Study of baryonic force by precise spectroscopy of hypernuclei using a multifaceted approach, Investigations in Intermediate Energy Spin Physics, G338944111, The strong interaction at the frontier of knowledge: fundamental research and applications, G3479632140, G4108694249, G4678507527, High-precision mass spectroscopy and lifetime measurements toward solving the hypertriton puzzle, G4982175812, G513797252, G5250029219, G5292656900, SELECTED PROBLEMS IN NUCLEAR/HIGH ENERGY PHYSICS: EXPERIMEN TAL HYPERNUCLEAR PHYSICS AND DEVELOPMENTS OF NEW EXPERIMENTAL TECHNIQUE, G5618676702, G6256534168, G6848031779, G7520763071, G7581181636, New determination of light hypernuclear mass with the decay pion spectroscopy, NUCLEAR PHYSICS RESEARCH AT JEFFERSON LAB, G8329594714, G8345995906, G8462202600, G880751848, G969889393, G974003626
OpenAlex ID: W7154385609