Abstract
We present the results of a search for new particles that lead to a boson plus jets in collisions at using the Collider Detector at Fermilab (CDF II). A data sample with a luminosity of collected using boson decays to and is used. We describe a completely data-based method to predict the dominant background from standard model events. This method can be similarly applied to other analyses requiring background predictions in multijet environments, as shown when validating the method by predicting the background from in production. No significant excess above the background prediction is observed, and a limit is set using a fourth generation quark model to quantify the acceptance. Assuming and using a leading-order calculation of the cross section, quark masses below are excluded at 95% confidence level.
31 More- Received 25 June 2007
DOI:https://doi.org/10.1103/PhysRevD.76.072006
©2007 American Physical Society