We have measured the mass, width and two-photon decay width of the ηc and η c mesons in two-photon collisions using 483 fb -1 of data collected with the Belle detector at the asymmetric-energy e + e -collider KEKB. Interference effects have been studied.
η and η′ mesons in the improved ladder Bethe–Salpeter approach
✍ Scribed by K. Naito; Y. Nemoto; M. Takizawa; K. Yoshida; M. Oka
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 129 KB
- Volume
- 684
- Category
- Article
- ISSN
- 0375-9474
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