Observation of hadronic tt??events with the collider detector at fermilab
Journal
Physical Review Letters
Journal Volume
80
Journal Issue
26
Pages
5720-5725
Date Issued
1998
Author(s)
Abe, F. et al. (CDF Collaboration)
Abstract
We observe hadronic W decays in tt¯→W(→ lv)+≥4 jet events using a 109 pb−1data sample of pp¯collisions at s=1.8TeV collected with the Collider Detector at Fermilab. A peak in the dijet invariant mass distribution is obtained that is consistent with W decay and inconsistent with the background prediction by 3.3 σ.From this peak we measure the W mass to be 77.2±4.6(stat+syst)GeV/c2. This result demonstrates the presence of a second W boson in tt¯candidates in the W(→ lv)+≥jet channel. © 1998 American Physical Society.
Type
journal article