Filters
Results 1 - 10 of 15
Results 1 - 10 of 15.
Search took: 0.021 seconds
| Sort by: date | relevance |
[en] We develop the formalism to study the hyperon-nucleon interaction potential within the bound-state approach to the SU(3) Skyrme model. The general framework is illustrated by applying it to the diagonal ΛN potential. The central, spin-spin and tensor components of this interaction are obtained and compared with those derived using alternative schemes
Journal
[en] One of the modifications of the non-linear σ model, the Dalarsson model is treated in a massive version to describe the N N interaction. In order to easily compare with results of the Skyrme model, the product Ansatz is used. Results for the central spin-spin, tensor and spin-orbit contributions are shown. (author)
Source
Herscovitz, Victoria; Vasconcellos, Cesar A.Z. (Rio Grande do Sul Univ., Porto Alegre, RS (Brazil)); Ferreira, Erasmo (Universidade Federal, Rio de Janeiro, RJ (Brazil)) (eds.); 386 p; ISBN 981-02-2185-1; 
; 1995; p. 322-325; International workshop on hadron physics 94; Gramado, RS (Brazil); 10-14 Apr 1994; 8 refs., 1 fig., 1 tab.
; 1995; p. 322-325; International workshop on hadron physics 94; Gramado, RS (Brazil); 10-14 Apr 1994; 8 refs., 1 fig., 1 tab.
[en] We discuss, in the framework of the bound state approach to SU(3) Skyrme model, the baryonic number-two strange sector. We study situations where the baryons involved are bound to form dibaryons and where free baryons are simply scattered. In the first case, the dibaryon spectrum is calculated with a generalized axially symmetric ansatz. A prediction about the existence of the H-particle is also made. In the second case we use the product ansatz to develop a formalism to study the general baryon-baryon- interaction potential. Results are presented for the ΛN interaction. (author)
Source
Navarra, Fernando S.; Robilotta, Manoel R. (Sao Paulo Univ., SP (Brazil)); Krein, Gastao (UNESP, SP (Brazil)); 504 p; ISBN 981-02-4510-6; ; 2001; p. 248-257; International workshop on hadron physics 2000; Caraguatatuba, SP (Brazil); 10-15 Apr 2000; 14 refs., 1 fig., 2 tabs., 3 graphs
; 2001; p. 248-257; International workshop on hadron physics 2000; Caraguatatuba, SP (Brazil); 10-15 Apr 2000; 14 refs., 1 fig., 2 tabs., 3 graphs
[en] A variational method has been used to estimate the single particle energies for the 16O hypernucleus in a relativistic description with meson exchange in the mean field approximation. Coupling constants and meson masses have been selected among the sets found in the literature that reproduced reasonably the phenomenological shell model potential for 16O, 16O sub(ß) and 16O sub(μ). (Author)
[pt]
Uma descricao relativistica via troca de mesons em aproximacao de campo medio e usada para estimar no metodo variacional as energias de particula-unica do hipernucleo 16O sub(μ). Os conjuntos de constantes de acoplamento e massas dos mesons foram escolhidos, dentre os existentes na literatura, de forma a reproduzir o melhor possivel o potencial do modelo de camadas fenomenologico para o 16O, 16O sub(ß) e 16O sub(μ). (Autor)Journal
Revista Brasileira de Fisica; ISSN 0374-4922; ; (vol. especial); p. 113-134
; (vol. especial); p. 113-134
[en] The proposition of Dalarsson of a simplified Skyrme model, where the quartic term is absent and a phase is added to the soliton field is tested to estimate the N N interaction as compared to results of the literature for the usual SU(2) Skyrme model in the product approximation. (author)
Source
Chung, Kai Cheong (Centro Brasileiro de Pesquisas Fisicas (CBPF), Rio de Janeiro, RJ (Brazil)); Hama, Yogiro (Sao Paulo Univ., SP (Brazil)); Kodama, Takeshi (Universidade Federal, Rio de Janeiro, RJ (Brazil)) (eds.); 405 p; ISBN 981-02-1720-X; ; 1995; p. 359-363; 3. International workshop on relativistic aspects of nuclear physics; Rio de Janeiro, RJ (Brazil); 25-27 Aug 1993; 12 refs., 2 figs.
; 1995; p. 359-363; 3. International workshop on relativistic aspects of nuclear physics; Rio de Janeiro, RJ (Brazil); 25-27 Aug 1993; 12 refs., 2 figs.
| 1 | 2 | Next |