Abstract
In CDF we have observed the reactions , with being a centrally produced , , or , and in collisions at . The event signature requires two oppositely charged central muons, and either no other particles or one additional photon detected. Exclusive vector meson production is as expected for elastic photoproduction, , observed here for the first time in hadron-hadron collisions. We also observe exclusive . The cross sections for , , and are , , and , respectively, and the continuum is consistent with QED. We put an upper limit on the cross section for Odderon exchange in exclusive production.
- Received 16 February 2009
DOI:https://doi.org/10.1103/PhysRevLett.102.242001
©2009 American Physical Society