| Investigation of Λ+c- and Λb-Hypernuclei in Relativistic Mean-Field Model |
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| 作者单位： | TAN Yu-Hong(Theoretical Physics Division, Nankai Institute of Mathematics, Nankai University, Tianjin 300071, China);CAI Chong-Hai,LI Lei,NING Ping-Zhi(Department of Physics, Nankai University, Tianjin 300071, China) |
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| 基金项目： | 中国博士后科学基金,国家自然科学基金,高等学校博士学科点专项科研项目 |
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| 摘 要： | We investigate the properties of Λc+- and Λb-hypernuclei within the framework of the relativistic mean-fieldmodel (RMF). It is found that no Λc+ bound states can exist if the Λc+ potential well depth |Uλc+| in nuclear matter isless than 10 MeV. If |Uλc+| is less than 20 MeV, Λc+ cannot bind to the heavier nuclei with atomic number larger than100. We suggest it is preferable to search the Λc+-hypernuclei from medium-heavy nuclear systems in experiment. Verysmall spin-orbit splitting for the Λc+ in hypernuclei is also observed, and for the Λb it is nearly zero.
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