Title
Search for new bottomlike quark pair decays <tex>$Q\overline{Q}\rightarrow(tW^{\mp})(\overline{t}W^{\pm})$</tex> in same-charge dilepton eventsSearch for new bottomlike quark pair decays <tex>$Q\overline{Q}\rightarrow(tW^{\mp})(\overline{t}W^{\pm})$</tex> in same-charge dilepton events
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Elementary Particle Physics
Publication type
article
Publication
New York, N.Y.,
Subject
Physics
Source (journal)
Physical review letters. - New York, N.Y.
Volume/pages
104(2010):9, p. 091801,1-091801,8
ISSN
0031-9007
ISI
000275252500010
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
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&#8723;. 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&#773; 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.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/7ceddb/12c5850b.pdf
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