Is the Y(4260) just a coupled-channel signal?
| dc.creator | van Beveren, Eef | |
| dc.creator | Rupp, George | |
| dc.date | 2006-05-29 | |
| dc.date.accessioned | 2026-07-07T07:13:21Z | |
| dc.date.available | 2026-07-07T07:13:21Z | |
| dc.description | The Ds-Ds*, D*-D*, and Ds*-Ds*, P-wave channels in the energy region of the Y(4260) charmonium structure are studied in a coupled-channel model applied to JPC=1-- c-cbar resonances. The three channels exhibit enhancements that peak at 4.27 GeV, 4.26 GeV, and 4.33 GeV, respectively, having widths ranging from 80 to 200 MeV. However, no S-matrix poles are found, other than those associated with the psi(2D,4160) and psi(4S,4415). The conclusion is that the observed Y(4260) signal(s) in pi-pi J/psi is (are) probably associated with the opening of the aforementioned channels, resulting in a resonance-like structure caused by the tail of the psi(3S,4040) resonance, roughly midway between the mentioned P-wave thresholds and a sharp kinematical minimum at about 4.4 GeV present in both the experimental and the model scattering amplitude. | |
| dc.description | 6 pages, 8 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0605317 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0605317 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/112427 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Is the Y(4260) just a coupled-channel signal? | |
| dc.type | text |