MESONIC DECAY OF HE-5(LAMBDA) WITH QUARK-MODEL-BASED HYPERNUCLEAR WAVE-FUNCTION

Authors
STRAUB U NIEVES J FAESSLER A OSET E
Citation
U. Straub et al., MESONIC DECAY OF HE-5(LAMBDA) WITH QUARK-MODEL-BASED HYPERNUCLEAR WAVE-FUNCTION, Nuclear physics. A, 556(4), 1993, pp. 531-551
Citations number
32
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. A → ACNP
ISSN journal
03759474
Volume
556
Issue
4
Year of publication
1993
Pages
531 - 551
Database
ISI
SICI code
0375-9474(1993)556:4<531:MDOHWQ>2.0.ZU;2-Z
Abstract
We have evaluated the mesonic decay of the He-5(LAMBDA) hypernucleus b y using a LAMBDA wave function generated from the quark cluster model. As a consequence of the LAMBDA N repulsion at short distances we obta in a LAMBDA wave function in the nucleus with a large radius. The smal ler overlap with the He-4 core with respect to simpler wave functions and the effect of the pion renormalization increase the mesonic width considerably and one obtains a good reproduction of the experimental d ata.