Study of a narrow pi+ pi- peak at about 755 MeV/c^2 in bar-p n --> 2 pi+ 3 pi- annihilation at rest
| dc.creator | Gaspero, Mario | |
| dc.date | 2009-02-06 | |
| dc.date.accessioned | 2026-07-07T12:38:56Z | |
| dc.date.available | 2026-07-07T12:38:56Z | |
| dc.description | A narrow peak in the pi+ pi- mass distribution was seen by the Rome-Syracuse Collaboration in bar-p n --> 2 pi+ 3 pi- annihilation at rest 39 years ago. The reanalysis of this peak finds a mass of 757.4 +- 2.6 MeV/c^2 and a width slightly narrower than the experimental resolution. The evidence of the peak is 5.2 standard deviations. This state is generated in (12.4 +- 2.4)% of the bar-p n --> 2 pi+ 3 pi- annihilations at rest. No spin analysis is possible with the statistics of the experiment. | |
| dc.description | 7 pages, 1 figure | |
| dc.identifier | https://arxiv.org/abs/0902.1126 | |
| dc.identifier | http://arxiv.org/abs/0902.1126 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/218938 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Study of a narrow pi+ pi- peak at about 755 MeV/c^2 in bar-p n --> 2 pi+ 3 pi- annihilation at rest | |
| dc.type | text |