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Search for New Bottomlike Quark Pair Decays QQ -> (tW)(tW±) in Same-Charge Dilepton Events

ContributorsCDF Collaboration
Published inPhysical review letters, vol. 104, no. 09, 091801
Publication date2010
Abstract

We report the most restrictive direct limits on masses of fourth-generation down-type quarks b′, and quarklike composite fermions (B or T5/3), decaying promptly to tW∓. We search for a significant excess of events with two same-charge leptons (e, μ), several hadronic jets, and missing transverse energy. An analysis of data from pp collisions with an integrated luminosity of 2.7  fb−1 collected with the CDF II detector at Fermilab yields no evidence for such a signal, setting mass limits mb′, mB>338  GeV/c2 and mT5/3>365  GeV/c2 at 95% confidence level.

Citation (ISO format)
CDF Collaboration. Search for New Bottomlike Quark Pair Decays <em>QQ</em> -&gt; <em>(tW<sup>∓</sup>)(tW<sup>±</sup>)</em> in Same-Charge Dilepton Events. In: Physical review letters, 2010, vol. 104, n° 09, p. 091801. doi: 10.1103/PhysRevLett.104.091801
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ISSN of the journal0031-9007
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