Faddeev-Yakubovsky search for ( 4 )( Lambda Lambda)H.
Faddeev-Yakubovsky search for ( 4 )( Lambda Lambda)H.
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Faddeev-Yakubovsky 搜索 ( 4 )( Lambda Lambda)H。
DOI：
10.1103/physrevlett.89.172502
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发表时间：
2002
影响因子：
8.6
通讯作者：
A. Gal
中科院分区：
文献类型：
--
作者：
I. Filikhin;A. Gal
BNL-AGS E906实验已经提出了（4）（Lambda）H粒子稳定性的证据。我们报道了Faddeev-Yakubovsky对四体Lambda-Lambdapn系统的计算，该计算使用了LambdaN相互作用，在Lambdapn子系统的Faddeev计算中再现了观察到的（3）（Lambda）H（1 / 2（+））的结合能。在很宽的λ-λ相互作用强度范围内没有发现（4）（λ-λ）H束缚态，尽管（4）（λ-λ）H的三体λ-λ模型的Faddeev方程承认，对于再现B（λ-λ）（（6）（λ-λ）He）所需的弱λ-λ相互作用强度，存在1（+）束缚态。
Evidence for particle stability of ( 4 )( LambdaLambda)H has been suggested by the BNL-AGS E906 experiment. We report on Faddeev-Yakubovsky calculations for the four-body LambdaLambdapn system using LambdaN interactions which reproduce the observed binding energy of (3)(Lambda)H(1 / 2(+)) within a Faddeev calculation for the Lambdapn subsystem. No ( 4 )( LambdaLambda)H bound state is found over a wide range of LambdaLambda interaction strengths, although the Faddeev equations for a three-body LambdaLambdad model of ( 4 )( LambdaLambda)H admit a 1(+) bound state for as weak a LambdaLambda interaction strength as required to reproduce B(LambdaLambda)(( 6 )( LambdaLambda)He).