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Search for ttbar resonances in the lepton plus jets final state in ppbar collisions at sqrt{s}=1.96TeV

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>2/10/2008
<mark>Journal</mark>Physics Letters B
Number of pages7
<mark>Original language</mark>English


We present a search for a narrow-width heavy resonance decaying into top quark pairs X->ttbar in ppbar collisions at sqrt{s}=1.96TeV using approximately 0.9fb^-1 of data collected with the D0 detector at the Fermilab Tevatron Collider. This analysis considers ttbar candidate events in the lepton plus jets channel with at least one identified b jet and uses the ttbar invariant mass distribution to search for evidence of resonant production. We find no evidence for a narrow resonance X decaying to ttbar. Therefore, we set upper limits on sigma*B(X->ttbar) for different hypothesized resonance masses using a Bayesian approach. For a Topcolor-assisted technicolor model, the existence of a leptophobic Z' boson with mass M_Z'

Bibliographic note

8 pages, 3 figures, submitted to PLB