Measurement of e^+e^- to pi^+pi^-J/psi Cross Section via Initial State Radiation at Belle
| dc.creator | Belle Collaboration | |
| dc.creator | Yuan, C. Z. | |
| dc.date | 2007-07-17 | |
| dc.date | 2007-09-21 | |
| dc.date.accessioned | 2026-07-07T11:52:47Z | |
| dc.date.available | 2026-07-07T11:52:47Z | |
| dc.description | The cross section for e^+e^- to pi^+pi^-J/psi between 3.8 and 5.5 GeV/c^2 is measured using a 548 fb^{-1} data sample collected on or near the Upsilon(4S) resonance with the Belle detector at KEKB. A peak near 4.25 GeV/c^2, corresponding to the so called Y(4260), is observed. In addition, there is another cluster of events at around 4.05 GeV/c^2. A fit using two interfering Breit-Wigner shapes describes the data better than one that uses only the Y(4260), especially for the lower mass side of the 4.25 GeV enhancement. | |
| dc.description | 11 pages, 5 figures, 2 tables; version to appear in PRL | |
| dc.identifier | https://arxiv.org/abs/0707.2541 | |
| dc.identifier | http://arxiv.org/abs/0707.2541 | |
| dc.identifier | Phys.Rev.Lett.99:182004,2007 | |
| dc.identifier | doi:10.1103/PhysRevLett.99.182004 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/204306 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Measurement of e^+e^- to pi^+pi^-J/psi Cross Section via Initial State Radiation at Belle | |
| dc.type | text |