A PROBABLE EXPLANATION OF THE 5He OVERBINDING PROBLEM

  • In this paper,based upon analysing the various factors which might cause the overbinding of 5He,we make a proper adjustment for the wave function of the core nucleus 4He.With the adjusted core wave function and various Λ-N interactions,we calculate the Λ-hyperon binding energy BΛ(5He) of the 5He ground state and obtain a reasonable agreement between the theoretical and experimental values of BΛ(5He).Thus, the 5He overbinding problem could be explained.
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  • [1] B. F . Gibson, Nucl. phys., A479(1988). 115C.[2] R. H. Dalitz, R. C. Herndon and Y. C. Tang, Nucl. phys, B47(1972), 109.[3] Thomas Schimert. D. J. Stubeda, M. Lemere and Y. C. Tang, Nucl . phys., A343(1980),429.[4] 刘渊,刘宪辉,原子核物理,5(1983)186.[5] C. Daskaloyannis, Phys. Rev., C26(1982), 702.[6] R. H. Bassel and C. Wilkin, Phys. Rev., 174(1968): 1179.[7] T. T. Chou, Phys. Rev., 168(1968), 1594.[8] J. P. Auger et al., Nucl. phys., 262(1976), 372.[9] R. C. Barrett and D. F. Jackson, NucIear Sizes and Structure(1977) p. 146.[10] T. H. Ho et al., Phgr. Lett., B30(1969), 303; B31(1970), 259.[11] W. Bassichis et al.Phys. Rev,C1(1970), 28.[12] S. P. Verma et al.phys. Rev.C20(1979), 781; C22(1980),229.[13] Liu Dong-sheng, Shen Jian-ping, Li Gaung-lie and Yu You-wen原子核研究(Japan). V31(1986). 65:Commu. in Theor. Phys., V6(1986), 175.[14] A. Tekou, Nuovo. Cimento, 54A(1979). 15.[15] 施义晋等,高能物理与核物理,5(1983),605.
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LIU Ji-Feng, SHEN Jian-Ping and LI Guang-Lie. A PROBABLE EXPLANATION OF THE 5He OVERBINDING PROBLEM[J]. Chinese Physics C, 1989, 13(9): 814-821.
LIU Ji-Feng, SHEN Jian-Ping and LI Guang-Lie. A PROBABLE EXPLANATION OF THE 5He OVERBINDING PROBLEM[J]. Chinese Physics C, 1989, 13(9): 814-821. shu
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Received: 1900-01-01
Revised: 1900-01-01
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A PROBABLE EXPLANATION OF THE 5He OVERBINDING PROBLEM

    Corresponding author: LIU Ji-Feng,
  • Guangxi Normal University,GuilinInstitute of High Energy Physics,Academia Sinica,Beijing

Abstract: In this paper,based upon analysing the various factors which might cause the overbinding of 5He,we make a proper adjustment for the wave function of the core nucleus 4He.With the adjusted core wave function and various Λ-N interactions,we calculate the Λ-hyperon binding energy BΛ(5He) of the 5He ground state and obtain a reasonable agreement between the theoretical and experimental values of BΛ(5He).Thus, the 5He overbinding problem could be explained.

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