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Search for a Heavy Toplike Quark in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mover accent="true"><mml:mi>p</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math>Collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>1.96</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>TeV</mml:mi></mml:math>
Name
PhysRevLett.107.261801.pdf
Description
Published version
Size
356.68 KB
Format
Adobe PDF
Checksum (MD5)
d3c8a07045fe2251780c60b3582f82af
Date Issued
2011
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Version
Final published version
Abstract
We present the results of a search for pair production of a heavy toplike (t ′) quark decaying to Wq final states using data corresponding to an integrated luminosity of 5.6fb -1 collected by the CDF II detector in pp̄ collisions at √s=1.96TeV. We perform parallel searches for t ′→Wb and t ′→Wq (where q is a generic down-type quark) in events containing a lepton and four or more jets. By performing a fit to the two-dimensional distribution of total transverse energy versus reconstructed t ′ quark mass, we set upper limits on the t ′t ̄′ production cross section and exclude a standard model fourth-generation t ′ quark decaying to Wb (Wq) with mass below 358 (340)GeV/c2 at 95% C.L. © 2011 American Physical Society.
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
10.1103/PhysRevLett.107.261801
