Abstract
We present the first simultaneous measurement of the ratio of branching fractions, , with being a , , or quark, and the top-quark pair production cross section in the lepton plus jets channel using of collision data at collected with the D0 detector. We extract and by analyzing samples of events with 0, 1, and identified jets. We measure and , in agreement with the standard model prediction.
- Received 10 January 2008
DOI:https://doi.org/10.1103/PhysRevLett.100.192003
©2008 American Physical Society