Effective one-boson-exchange potential for Lambda N and Sigma N systems and hypertriton

Tominaga, K Ueda, T

K. Tominaga et T. Ueda, Effective one-boson-exchange potential for Lambda N and Sigma N systems and hypertriton, NUCL PHYS A, 693(3-4), 2001, pp. 731-754

36

INGLESE

Article

Physics

NUCLEAR PHYSICS A

0375-9474 → ACNP

693

3-4

2001

731 - 754

ISI

0375-9474(20011022)693:3-4<731:EOPFLN>2.0.ZU;2-A

Ehime OBEP for LambdaN and SigmaN coupled systems is presented which uses t he SU(3) invariant framework for pseudoscalar, scalar and vector nonet meso ns and also uses additional elements: a, kappa, Omega and P. Those elements violate the SU(3) invariance. sigma and kappa represent effective scalar m esons which embody the (pi pi)(I=0) and (K pi)(I=1/2) correlations, while O mega and P do effective multimeson states with the quantum numbers of omega and rho mesons, respectively. The data for AN and EN observables as well a s hypertriton binding energy are reproduced. The Ehime results are compared with the Nijmegen (SC97f) ones and discriminating points are discussed. (C ) 2001 Elsevier Science B.V. All rights reserved.