Search for the Production of Narrow tb-bar Resonances in 1.9 fb-1 of pp-bar Collisions at sqrt[s]=1.96 TeV

Search for the Production of Narrow tb-bar Resonances in 1.9 fb-1 of pp-bar Collisions at sqrt[s]=1.96 TeV

We present new limits on resonant tb̅ production in pp̅ collisions at √s=1.96  TeV, using 1.9  fb[superscript -1] of data recorded with the CDF II detector at the Fermilab Tevatron. We reconstruct a candidate tb̅ mass in events with a lepton, neutrino candidate, and two or three jets, and search...

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Bibliographic Details
Main Authors: Xie, Si, Knuteson, Bruce O., Henderson, C., Hahn, Kristian Allan, Gomez-Ceballos, Guillelmo, Choudalakis, Georgios, Paus, Christoph M. E., Makhoul, Khaldoun, Goncharov, Maxim, Bauer, Gerry P
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: American Physical Society 2010
Online Access:http://hdl.handle.net/1721.1/51841
https://orcid.org/0000-0002-6047-4211
Description
Summary:We present new limits on resonant tb̅ production in pp̅ collisions at √s=1.96  TeV, using 1.9  fb[superscript -1] of data recorded with the CDF II detector at the Fermilab Tevatron. We reconstruct a candidate tb̅ mass in events with a lepton, neutrino candidate, and two or three jets, and search for anomalous tb̅ production as modeled by W′→tb̅ . We set a new limit on a right-handed W′ with standard model-like coupling, excluding any mass below 800  GeV/c[superscript 2] at 95% C.L. The cross section for any narrow, resonant tb̅ production between 750 and 950  GeV/c[superscript 2] is found to be less than 0.28 pb at 95% C.L. We also present an exclusion of the W′ coupling strength versus W′ mass over the range 300–950  GeV/c[superscript 2].

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