Phenomenological analysis of nucleon strangeness and meson-nucleon sigma terms
| dc.creator | Huang, Feng | |
| dc.creator | Cao, Fu-Guang | |
| dc.creator | Ma, Bo-Qiang | |
| dc.date | 2007-11-05 | |
| dc.date.accessioned | 2026-07-07T11:54:00Z | |
| dc.date.available | 2026-07-07T11:54:00Z | |
| dc.description | We calculate the nucleon strangeness $y_N$ in the chiral quark model and the meson cloud model. With the internal relation between the sigma term of $π$$N$ ($σ_{πN}$) and $y_N$, we present the results of $σ_{πN}$ in these two models. Our calculations show that $y_N$ from the chiral quark model is significant larger than that from the meson cloud model, whereas the difference of $σ_{πN}$ between the two models is relatively small. We also present the results of $σ_{K N}$ and $σ_{ηN}$, which could be determined by $σ_{πN}$ and $y_N$ from their definition in the current algebra, and find that these two physical parameters are quite sensitive to $y_N$. The results indicate the necessity to restrict the parameters of the two models from more precision measurements. | |
| dc.description | 13 latex pages, no figure, to appear in PRD | |
| dc.identifier | https://arxiv.org/abs/0711.0675 | |
| dc.identifier | http://arxiv.org/abs/0711.0675 | |
| dc.identifier | Phys.Rev.D76:114016,2007 | |
| dc.identifier | doi:10.1103/PhysRevD.76.114016 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/204744 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Phenomenological analysis of nucleon strangeness and meson-nucleon sigma terms | |
| dc.type | text |