QCD sum rules study of $QQ-\bar{u}\bar{d}$ mesons
| dc.creator | Navarra, Fernando S. | |
| dc.creator | Nielsen, Marina | |
| dc.creator | Lee, Su Houng | |
| dc.date | 2007-03-06 | |
| dc.date | 2007-04-10 | |
| dc.date.accessioned | 2026-07-07T11:22:45Z | |
| dc.date.available | 2026-07-07T11:22:45Z | |
| dc.description | We use QCD sum rules to study the possible existence of $QQ-\bar{u}\bar{d}$ mesons, assumed to be a state with $J^{P}=1^{+}$. For definiteness, we work with a current with an axial heavy diquark and a scalar light antidiquark, at leading order in $α_s$. We consider the contributions of condensates up to dimension eight. For the $b$-quark, we predict $M_{T_{bb}}= (10.2\pm 0.3) {\rm GeV}$, which is below the $\bar{B}\bar{B}^*$ threshold. For the $c$-quark, we predict $M_{T_{cc}}= (4.0\pm 0.2) {\rm GeV}$, in agreement with quark model predictions. | |
| dc.description | replaced version accepted for publication to Phys. Lett. B | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0703071 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0703071 | |
| dc.identifier | Phys.Lett.B649:166-172,2007 | |
| dc.identifier | doi:10.1016/j.physletb.2007.04.010 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/194678 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | QCD sum rules study of $QQ-\bar{u}\bar{d}$ mesons | |
| dc.type | text |