Observation of hadronic tt¯events with the collider detector at fermilab

CDF Collaboration

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)5720-5725
Number of pages6
JournalPhysical review letters
Issue number26
StatePublished - 1998

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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