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Search for t(t)over-bar resonances in the lepton plus jets final state in p(p)over-bar collisions at root s=1.96 TeV
University of Chicago.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 528
2008 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 668, no 2, 98-104 p.Article in journal (Refereed) Published
Abstract [en]

We present a search for a narrow-width heavy resonance decaying into top quark pairs (X -> t (t) over bar) in p (p) over bar collisions at root s = 1.96 TeV using approximately 0.9 fb(-1) of data collected with the DO detector at the Fermilab Tevatron Collider. This analysis considers t (t) over bar candidate events in the lepton plus jets channel with at least one identified b jet and uses the t (t) over bar invariant mass distribution to search for evidence of resonant production. We find no evidence for a narrow resonance X decaying to t (t) over bar. Therefore, we set upper limits on sigma x center dot B(X -> t (t) over bar) 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') < 700 GeV and width Gamma(Z') = 0.012M(Z') can be excluded at the 95% C.L.

Place, publisher, year, edition, pages
2008. Vol. 668, no 2, 98-104 p.
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Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-47366DOI: 10.1016/j.physletb.2008.08.027ISI: 000260716200005Scopus ID: 2-s2.0-51649083672OAI: oai:DiVA.org:kth-47366DiVA: diva2:454867
Note
QC 20111108 Author Count: 528Available from: 2011-11-08 Created: 2011-11-08 Last updated: 2017-12-08Bibliographically approved

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Strandberg, Jonas

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  • apa
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