| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000403425 |
| ISSN: | 0103-9733 |
| Authors: | Cavalcante, I.P1 Robilotta, M.R2 Borges, J.S3 Santos, D1 Zarnauskas, G.R.S2 |
| Institutions: | 1Universidade Federal de Mato Grosso do Sul, Centro de Ciencias Exatas e Tecnologia, Campo Grande, Mato Grosso do Sul. Brasil 2Universidade de Sao Paulo, Instituto de Fisica, Sao Paulo. Brasil 3Universidade do Estado do Rio de Janeiro, Instituto de Fisica, Rio de Janeiro. Brasil |
| Year: | 2007 |
| Season: | Mar |
| Volumen: | 37 |
| Number: | 1 |
| Pages: | 88-91 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico |
| English abstract | We evaluate nucleon and delta sigma-terms and obtain the results 43 MeV ≤ σN ≤ 49 MeV and 28 MeV ≤ σ∆ ≤ 32 MeV, depending on the coupling constants used, which are compatible with values extracted from experiment and produced by other groups. We show that the decay ∆ → πN explains the relation σ∆ < σN |
| Disciplines: | Física y astronomía |
| Keyword: | Física de partículas y campos cuánticos, Física nuclear, Teoría cuántica de campos, Cromodinámica cuántica, Hadrones |
| Keyword: | Physics and astronomy, Nuclear physics, Particle physics and quantum fields, Quantum field theory, Quantum chromodynamics (QCD), Hadrons |
| Full text: | Texto completo (Ver PDF) |
