Abstract
We have measured the ratio of prompt production rates of the charmonium states and in of collisions at . The photon from their decay into is reconstructed through conversion into pairs. The energy resolution this technique provides makes the resolution of the two states possible. We find the ratio of production cross sections for events with , , and .
- Received 30 October 2000
DOI:https://doi.org/10.1103/PhysRevLett.86.3963
©2001 American Physical Society