QCD sum rules study of Ξ_c and Ξ_b baryons
| dc.creator | Durães, Francisco O. | |
| dc.creator | Nielsen, Marina | |
| dc.date | 2007-08-22 | |
| dc.date | 2007-10-16 | |
| dc.date.accessioned | 2026-07-07T11:41:59Z | |
| dc.date.available | 2026-07-07T11:41:59Z | |
| dc.description | We use QCD sum rules to study the masses of the baryons $Ξ_c$ and $Ξ_b$. We work with a current where the strange and the light quarks are in a relative spin zero, at leading order in $α_s$. We consider the contributions of condensates up to dimension six. For $Ξ_b$ we get $m_{Ξ_{b}}= (5.75\pm 0.25) {\rm GeV}$, and for $Ξ_c$ we get $m_{Ξ_{c}}= (2.5\pm 0.2) {\rm GeV}$, both in excelent agreement with the experimental values. We also make predictions to the state $Ω_b(ssb)$ obtaining m_{Ω_{b}}= (5.82\pm 0.23) GeV. | |
| dc.description | revised version accepted for publication in Phys. Lett. B. Includes a prediction to the state Omega_b(ssb) | |
| dc.identifier | https://arxiv.org/abs/0708.3030 | |
| dc.identifier | http://arxiv.org/abs/0708.3030 | |
| dc.identifier | Phys.Lett.B658:40-44,2007 | |
| dc.identifier | doi:10.1016/j.physletb.2007.10.054 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/200727 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | QCD sum rules study of Ξ_c and Ξ_b baryons | |
| dc.type | text |