Abstract
We report the observation of prompt via double production from the continuum. In this process one pair fragments into a meson while the remaining pair either produces a charmonium state or fragments into open charm. Both cases have been experimentally observed. We find cross sections of and and infer . These results are obtained from a data sample collected near the resonance, with the Belle detector at the KEKB collider.
- Received 3 June 2002
DOI:https://doi.org/10.1103/PhysRevLett.89.142001
©2002 American Physical Society