Résumé
We report measurements of charmonia produced in two-photon collisions and decaying to four-meson final states, where the meson is either a charged pion or a charged kaon. The analysis is based on a 395 fb-1 data sample accumulated with the Belle detector at the KEKB electron-positron collider. We observe signals for the three C-even charmonia ηc(1S), χc0(1P) and χc2(1P) in the π+π -π+π-, K+K -π+π- and K+K -K+K- decay modes. No clear signals for ηc(2S) production are found in these decay modes. We have also studied resonant structures in charmonium decays to two-body intermediate meson resonances. We report the products of the two-photon decay width and the branching fractions, ΓγB, for each of the charmonium decay modes.
| langue originale | Anglais |
|---|---|
| Pages (de - à) | 1-14 |
| Nombre de pages | 14 |
| journal | European Physical Journal C |
| Volume | 53 |
| Numéro de publication | 1 |
| Les DOIs | |
| état | Publié - 1 janv. 2008 |
| Modification externe | Oui |
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