|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'501'711
Articles rated: 2609
19 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Sigma-term physics in the perturbative chiral quark model | | V. E. Lyubovitskij
; Th. Gutsche
; Amand Faessler
; E.G. Drukarev
; | | Date: |
29 Sep 2000 | | Journal: | Phys.Rev. D63 (2001) 054026 | | Subject: | hep-ph | | Affiliation: | Tuebingen University and Tomsk University), Th. Gutsche (Tuebingen University), Amand Faessler (Tuebingen University), E.G. Drukarev (Petersburg Nuclear Physics Institute, Gatchina | | Abstract: | We apply the perturbative chiral quark model (PCQM) at one loop to analyse meson-baryon sigma-terms. Analytic expressions for these quantities are obtained in terms of fundamental parameters of low-energy pion-nucleon physics (weak pion decay constant, axial nucleon coupling, strong pion-nucleon form factor) and of only one model parameter (radius of the nucleonic three-quark core). Our result for the piN sigma term of about 45 MeV is in good agreement with the value deduced by Gasser, Leutwyler and Sainio using dispersion-relation techniques and exploiting the chiral symmetry constraints. | | Source: | arXiv, hep-ph/0009341 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER