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Sigma-nucleus potential in A=28 |
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| Authors: | Noumi H Saha P K Abe D Ajimura S Aoki K Bhang H C Endo T Fujii Y Fukuda T Guo H C Imai K Hashimoto O Hotchi H Kim E H Kim J H Kishimoto T Krutenkova A Maeda K Nagae T Nakamura M Outa H Sekimoto M Saito T Sakaguchi A Sato Y Sawafta R Shimizu Y Takahashi T Tang L Tamura H Tanida K Watanabe T Xia H H Zhou S H Zhu L H Zhu X F |
| Affiliation: | High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan. |
| Abstract: | We have studied the (pi(-),K+) reaction on a silicon target to investigate the sigma-nucleus potential. The inclusive spectrum was measured at a beam momentum of 1.2 GeV/c with an energy resolution of 3.3 MeV (FWHM) by employing the superconducting kaon spectrometer system. The spectrum was compared with theoretical calculations within the framework of the distorted-wave impulse approximation, which demonstrates that a strongly repulsive sigma-nucleus potential with a nonzero size of the imaginary part reproduces the observed spectrum. |
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