Abstract
A search for charmonium and other new states is performed in a study of exclusive initial-state-radiation production of events from electron-positron annihilations at a center-of-mass energy of 10.58 GeV. The data sample corresponds to an integrated luminosity of and was recorded by the BABAR experiment at the PEP-II storage ring. The mass spectrum shows clear evidence of the plus other structures near 3.9, 4.1, and . No evidence for is observed, leading to an upper limit of at 90% confidence level.
- Received 6 October 2007
DOI:https://doi.org/10.1103/PhysRevD.76.111105
©2007 American Physical Society