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Title: Scalar {lambda}N and {lambda}{lambda} interaction in a chiral unitary approach

Abstract

We study the central part of the {lambda}N and {lambda}{lambda} potential by considering the correlated and uncorrelated two-meson exchange in addition to the {omega} exchange contribution. The correlated two-meson exchange is evaluated within a chiral unitary approach. We find that a short-range repulsion is generated by the correlated two-meson potential, which also produces an attraction in the intermediate-distance region. The uncorrelated two-meson exchange produces a sizable attraction in all cases that is counterbalanced by the {omega} exchange contribution.

Authors:
; ;  [1]
  1. Departamento de Fisica Teorica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Valencia (Spain)
Publication Date:
OSTI Identifier:
20864184
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 74; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevC.74.064002; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BOSON-EXCHANGE MODELS; CHIRALITY; HYPERON-HYPERON INTERACTIONS; INTERACTION RANGE; LAMBDA BARYONS; NUCLEON-HYPERON INTERACTIONS; OMEGA-782 MESONS; POTENTIALS

Citation Formats

Sasaki, K., Oset, E., and Vacas, M. J. Vicente. Scalar {lambda}N and {lambda}{lambda} interaction in a chiral unitary approach. United States: N. p., 2006. Web. doi:10.1103/PHYSREVC.74.064002.
Sasaki, K., Oset, E., & Vacas, M. J. Vicente. Scalar {lambda}N and {lambda}{lambda} interaction in a chiral unitary approach. United States. doi:10.1103/PHYSREVC.74.064002.
Sasaki, K., Oset, E., and Vacas, M. J. Vicente. Fri . "Scalar {lambda}N and {lambda}{lambda} interaction in a chiral unitary approach". United States. doi:10.1103/PHYSREVC.74.064002.
@article{osti_20864184,
title = {Scalar {lambda}N and {lambda}{lambda} interaction in a chiral unitary approach},
author = {Sasaki, K. and Oset, E. and Vacas, M. J. Vicente},
abstractNote = {We study the central part of the {lambda}N and {lambda}{lambda} potential by considering the correlated and uncorrelated two-meson exchange in addition to the {omega} exchange contribution. The correlated two-meson exchange is evaluated within a chiral unitary approach. We find that a short-range repulsion is generated by the correlated two-meson potential, which also produces an attraction in the intermediate-distance region. The uncorrelated two-meson exchange produces a sizable attraction in all cases that is counterbalanced by the {omega} exchange contribution.},
doi = {10.1103/PHYSREVC.74.064002},
journal = {Physical Review. C, Nuclear Physics},
number = 6,
volume = 74,
place = {United States},
year = {Fri Dec 15 00:00:00 EST 2006},
month = {Fri Dec 15 00:00:00 EST 2006}
}