The meson $Z^+(4430)$ as a tetraquark state
| dc.creator | Bracco, M. E. | |
| dc.creator | Lee, S. H. | |
| dc.creator | Nielsen, M. | |
| dc.creator | da Silva, R. Rodrigues | |
| dc.date | 2008-07-21 | |
| dc.date | 2008-12-16 | |
| dc.date.accessioned | 2026-07-07T12:28:41Z | |
| dc.date.available | 2026-07-07T12:28:41Z | |
| dc.description | We test the validity of the QCD sum rules applied to the meson $Z^+(4430)$, by considering a diquark-antidiquark type of current with $J^{P}=0^{-}$ and with $J^{P}=1^{-}$. We find that, with the studied currents, it is possible to find an acceptable Borel window. In such a Borel window we have simultaneously a good OPE convergence and a pole contribution which is bigger than the continuum contribution. We get $m_Z=(4.52\pm0.09)\GeV$ and $m_Z=(4.84\pm0.14)\GeV$ for the currents with $J^{P}=0^{-}$ and $J^{P}=1^{-}$ respectively. We conclude that the QCD sum rules results favors $J^{P}=0^{-}$ quantum numbers for the $Z^+(4430)$ meson. | |
| dc.description | version accepted for publication at Phys. Lett. B | |
| dc.identifier | https://arxiv.org/abs/0807.3275 | |
| dc.identifier | http://arxiv.org/abs/0807.3275 | |
| dc.identifier | Phys.Lett.B671:240-244,2009 | |
| dc.identifier | doi:10.1016/j.physletb.2008.12.021 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/215621 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | The meson $Z^+(4430)$ as a tetraquark state | |
| dc.type | text |