| Автор | S. Uehara |
| Автор | the Belle Collaboration |
| Дата выпуска | 2008-06-01 |
| dc.description | We have measured the cross section for π<sup>+</sup>π<sup>−</sup> production in two-photon collisions using a data sample with an integrated luminosity of 85.9 fb<sup>−1</sup> collected with the Belle detector. The f<sub>0</sub>(980) resonance is observed as a peak in the energy spectrum of the cross section. We also report preliminary results for γγ → π<sup>0</sup>π<sup>0</sup> with two-photon center-of-mass energies ranging from 0.6 to 4.0 GeV, based on a 95 fb<sup>−1</sup> data sample. We find at least four resonant structures including a peak from f<sub>0</sub>(980). In addition, there is evidence for χ<sub>c0</sub> production. We also make a preliminary discussion of the angular dependence and cross section ratio of γγ → π<sup>+</sup>π<sup>−</sup> and γγ → π<sup>0</sup>π<sup>0</sup>. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | 2008 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences |
| Название | Study of ππ production in two-photon collisions at Belle |
| Тип | paper |
| DOI | 10.1088/1674-1137/32/6/019 |
| Electronic ISSN | 2058-6132 |
| Print ISSN | 1674-1137 |
| Журнал | Chinese Physics C |
| Том | 32 |
| Первая страница | 499 |
| Последняя страница | 503 |
| Аффилиация | S. Uehara; IPNS-KEK, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, Tsukuba, Japan |
| Аффилиация | the Belle Collaboration; IPNS-KEK, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, Tsukuba, Japan |
| Выпуск | 6 |
