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http://acervodigital.unesp.br/handle/11449/24130- Title:
- 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
- Abazov, V. M.
- Abbott, B.
- Abolins, M.
- Acharya, B. S.
- Adams, M.
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- Aguilo, E.
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- Novaes, Sérgio Ferraz
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- 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. (C) 2008 Elsevier B.V. All rights reserved.
- 2-Oct-2008
- Physics Letters B. Amsterdam: Elsevier B.V., v. 668, n. 2, p. 98-104, 2008.
- 98-104
- Elsevier B.V.
- http://dx.doi.org/10.1016/j.physletb.2008.08.027
- Acesso restrito
- outro
- http://repositorio.unesp.br/handle/11449/24130
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