https://doi.org/10.1051/epjconf/202227111007
Development of a triple coincidence method of reaction, gamma-ray, and weak decay in the hypernuclear gamma-ray spectroscopy at J-PARC
1 Tohoku University, Sendai 980-8578, Japan
2 Japan Atomic Energy Agency (JAEA), Tokai 319-1195, Japan
3 High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
* e-mail: ooura@lambda.phys.tohoku.ac.jp
Published online: 9 November 2022
To understand the mechanism of the charge symmetry breaking between 4ΛH and 4ΛHe, we plan to measure the gamma-transition energy of 4ΛH (1+ → 0+) with a Ge detector array. For identification of the hypernucleus, we will perform triple coincidence with the reaction, γ-ray, and weak decay for the first time. We measure the pion from weak decay with a range counter. This method will enable γ-ray spectroscopy of various hyperfragments which cannot be directly produced by (K−, π−) or (π+, K+) reactions.
© The Authors, published by EDP Sciences, 2022
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