Observation of Two Resonant Structures in e+e- to pi+ pi- psi(2S) via Initial State Radiation at Belle
| dc.creator | Wang, X. L. | |
| dc.creator | Collaboration, Belle | |
| dc.date | 2007-07-25 | |
| dc.date | 2007-09-21 | |
| dc.date.accessioned | 2026-07-07T11:52:49Z | |
| dc.date.available | 2026-07-07T11:52:49Z | |
| dc.description | The cross section for e+e- to pi+ pi- psi(2S) between threshold and \sqrt{s}=5.5 GeV is measured using 673 fb^{-1} of data on and off the Υ(4S) resonance collected with the Belle detector at KEKB. Two resonant structures are observed in the pi+ pi- psi(2S) invariant mass distribution, one at 4361\pm 9\pm 9 MeV/c2 with a width of 74\pm 15\pm 10 MeV/c2, and another at 4664\pm 11\pm 5 MeV/c2 with a width of 48\pm 15\pm 3 MeV/c2, if the mass spectrum is parameterized with the coherent sum of two Breit-Wigner functions. These values do not match those of any of the known charmonium states. | |
| dc.description | 10 pages, 5 figures, 2 tables, version to appear in Phys. Rev. Lett | |
| dc.identifier | https://arxiv.org/abs/0707.3699 | |
| dc.identifier | http://arxiv.org/abs/0707.3699 | |
| dc.identifier | Phys.Rev.Lett.99:142002,2007 | |
| dc.identifier | doi:10.1103/PhysRevLett.99.142002 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/204318 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Observation of Two Resonant Structures in e+e- to pi+ pi- psi(2S) via Initial State Radiation at Belle | |
| dc.type | text |