Four-body calculation of Λ4H and Λ4He with realistic YN and NN interactions

✍ Scribed by E. Hiyama

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 205 KB
• Volume: 670
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(00)00111-1

✦ Synopsis

ELSEVIER Nuclear Physics A670 (2000) 273e-276c www.elsevier.nl/locate/npe Four-body calculation of 4H and 4He with realistic YN and NN interactions* E. Hiyama a aInstitute for Physical and Chemical Research (RIKEN), Wako 351-0198, Japan We carried out four-body calculations of 4H and 4He taking both the 3N + A and 3N + E channels explicitly with the use of realistic NN and YN interactions. The Echannel component plays an important role in binding energies of the A = 4 hypernuclei though the admixture is approximately 1%. The AN -ZN coupling is found to be of central-force type in the Nijmegen model D and of tensor-force type in the model F.

1. Model and method

One of the main goals of the hypernuclear study is to obtain useful information on the hyperon-nucleon (YN) interaction. Although several types of YN interactions have been proposed, these interactions have a lot of ambiguity due to little information from the