Abstract
We have investigated the invariant mass spectrum of dimuons collected by the CDF experiment during the 1992–1995 run of the Fermilab Tevatron collider to improve the limit on the existence of narrow resonances set by the experiments at the SPEAR collider. In the mass range , we derive 90% upper credible limits to the ratio of the production cross section times muonic branching fraction of possible narrow resonances to that of the meson. In this mass range, the average limit varies from 1.7 to 0.5%. This limit is much worse at the mass of due to an excess of events with a width consistent with the detector resolution.
2 More- Received 10 August 2005
DOI:https://doi.org/10.1103/PhysRevD.72.092003
©2005 American Physical Society