A Simple Explanation for the X(3872) Mass Shift Observed for Decay to D^{*0} {D^0}bar
| dc.creator | Dunwoodie, W. | |
| dc.creator | Ziegler, V. | |
| dc.date | 2007-10-26 | |
| dc.date | 2007-12-13 | |
| dc.date.accessioned | 2026-07-07T11:12:41Z | |
| dc.date.available | 2026-07-07T11:12:41Z | |
| dc.description | We propose a simple explanation for the increase of approximately 3 MeV/c^2 in the mass value of the X(3872) obtained from D^{*0} {D^0}bar decay relative to that obtained from decay to J/psi pi+ pi-. If the total width of the X(3872) is 2-3 MeV, the peak position in the D^{*0} {D^0}bar invariant mass distribution is sensitive to the final state orbital angular momentum because of the proximity of the X(3872) to D^{*0} {D^0}bar threshold. We show that for total width 3 MeV and one unit of orbital angular momentum, a mass shift ~3 MeV/c^2 is obtained; experimental mass resolution should slightly increase this value. A consequence is that spin-parity 2^- is favored for the X(3872). | |
| dc.description | 3.5 pages, 4 eps figures | |
| dc.identifier | https://arxiv.org/abs/0710.5191 | |
| dc.identifier | http://arxiv.org/abs/0710.5191 | |
| dc.identifier | Phys.Rev.Lett.100:062006,2008 | |
| dc.identifier | doi:10.1103/PhysRevLett.100.062006 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/191462 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | A Simple Explanation for the X(3872) Mass Shift Observed for Decay to D^{*0} {D^0}bar | |
| dc.type | text |