Abstract
We present the results of a search for pair production of a fourth-generation charge quark in collisions using of data obtained with the Collider Detector at Fermilab. We assume that both quarks decay via the flavor-changing neutral current process and that the mass is greater than . We studied the decay mode where one decays into or and the other decays hadronically, giving a signature of two leptons plus jets. An upper limit on the is established as a function of the mass. We exclude at confidence level a quark with mass between 100 and for .
- Received 13 September 1999
DOI:https://doi.org/10.1103/PhysRevLett.84.835
©2000 American Physical Society