Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10724583 | Physics Letters B | 2006 | 7 Pages |
Abstract
We present the measurement of R=B(tâWb)/B(tâWq) in pp¯ collisions at s=1.96TeV, using 230 pbâ1 of data collected by the Dà experiment at the Fermilab Tevatron Collider. We fit simultaneously R and the number (Ntt¯) of selected top quark pairs (tt¯), to the number of identified b-quark jets in events with one electron or one muon, three or more jets, and high transverse energy imbalance. To improve sensitivity, kinematical properties of events with no identified b-quark jets are included in the fit. We measure R=1.03â0.17+0.19(stat+syst), in good agreement with the standard model. We set lower limits of R>0.61 and |Vtb|>0.78 at 95% confidence level.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
DÃ Collaboration DÃ Collaboration, V.M. Abazov, B. Abbott, M. Abolins, B.S. Acharya, M. Adams, T. Adams, M. Agelou, J.-L. Agram, S.H. Ahn, M. Ahsan, G.D. Alexeev, G. Alkhazov, A. Alton, G. Alverson, G.A. Alves, M. Anastasoaie, T. Andeen, E.G. Zverev,