Search for the Production of Narrow tb̅ Resonances in 1.9  fb-1 of pp̅ Collisions at √s=1.96  TeV

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Aaltonen , T , Mehtala , P , Orava , R , Maki , T , Saarikko , H , Osterberg , K & CDF Collaboration 2009 , ' Search for the Production of Narrow tb̅ Resonances in 1.9  fb-1 of pp̅ Collisions at √s=1.96  TeV ' , Physical Review Letters , vol. 103 , no. 4 , pp. 041801 . https://doi.org/10.1103/PhysRevLett.103.041801

Title: Search for the Production of Narrow tb̅ Resonances in 1.9  fb-1 of pp̅ Collisions at √s=1.96  TeV
Alternative title: Search for the Production of Narrow tb Resonances in 1.9 fb-1 of ppbar Collisions at sqrt(s) = 1.96 TeV
Author: Aaltonen, T.; Mehtala, P.; Orava, R.; Maki, T.; Saarikko, H.; Osterberg, K.; CDF Collaboration
Contributor organization: Helsinki Institute of Physics
Particle Physics and Astrophysics
Date: 2009
Language: eng
Number of pages: 7
Belongs to series: Physical Review Letters
ISSN: 0031-9007
DOI: https://doi.org/10.1103/PhysRevLett.103.041801
URI: http://hdl.handle.net/10138/24425
Abstract: We present new limits on resonant tb production in proton-antiproton collisions at 1.96 TeV, using 1.9 fb^-1 of data recorded with the CDF II detector at the Fermilab Tevatron. We reconstruct a candidate mass in events with a lepton, neutrino candidate, and two or three jets, and search for anomalous tb production as modeled by W'->tb. We set a new limit on a right-handed W' with standard model-like coupling, excluding any mass below 800 GeV at 95% C.L. The cross-section for any narrow, resonant tb production between 750 and 950 GeV 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 to 950 GeV.We present new limits on resonant tb̅ production in pp̅ collisions at √s=1.96  TeV, using 1.9  fb-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/c2 at 95% C.L. The cross section for any narrow, resonant tb̅ production between 750 and 950  GeV/c2 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/c2.
Subject: 114 Physical sciences
hep-ex
Peer reviewed: Yes
Usage restriction: restrictedAccess


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