Home > Research > Publications & Outputs > Search for ttbar resonances in the lepton plus ...

Associated organisational unit

View graph of relations

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

Published
<mark>Journal publication date</mark>2/10/2008
<mark>Journal</mark>Physics Letters B
Issue number2
Volume668
Number of pages7
Pages (from-to)98-104
<mark>State</mark>Published
<mark>Original language</mark>English

Abstract

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