Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2002-09-27
Eur.Phys.J.A16:21-26,2003
Physics
Nuclear Physics
Nuclear Theory
16 pages with 2 figures
Scientific paper
10.1140/epja/i2002-10083-y
The significance of $\Lambda\Lambda$-$\Xi$N coupling in double-$\Lambda$ hypernuclei has been studied. The Pauli suppression effect due to this coupling in $^6_{\Lambda\Lambda}$He has been found to be 0.43 MeV for the coupling strength of the NSC97e potential. This indicates that the free-space $\Lambda\Lambda$ interaction is stronger by about $5^{\circ}$ phase shift than that deduced from the empirical data of $^6_{\Lambda\Lambda}$He without including the Pauli suppression effect. In $^5_{\Lambda\Lambda}$He and $^5_{\Lambda\Lambda}$H, an attractive term arising from $\Lambda\Lambda$-$\Xi$N conversion is enhanced by the formation of an alpha particle in intermediate $\Xi$ states. According to this enhancement, we have found that the $\Lambda\Lambda$ binding energy ($\Delta B_{\Lambda\Lambda}$) of $^5_{\Lambda\Lambda}$He is about 0.27 MeV larger than that of $^6_{\Lambda\Lambda}$He for the NSC97e coupling strength. This finding deviates from a general picture that the heavier is the core nucleus, the larger is $\Delta B_{\Lambda\Lambda}$.
Akaishi Yoshinori
Myint Khin Swe
Shinmura Shoji
No associations
LandOfFree
Lambda Lambda-XiN Coupling Effects in Light Hypernuclei does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Lambda Lambda-XiN Coupling Effects in Light Hypernuclei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lambda Lambda-XiN Coupling Effects in Light Hypernuclei will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-434023