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Search for new bottomlike quark pair decays QQ̄→(tW) (t̄W±) in same-charge dilepton events

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 pp̄ collisions with an integrated luminosity of 2.7fb-1 collected with the CDF II detector at Fermilab yields no evidence for such a signal, setting mass limits mb ′, m...

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Journal:
Physical Review Letters More from this journal
Volume:
104
Issue:
9
Publication date:
2010-03-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Language:
English
Pubs id:
pubs:125252
UUID:
uuid:fd8bef42-75e9-4909-8f97-344eaa1e7e61
Local pid:
pubs:125252
Source identifiers:
125252
Deposit date:
2012-12-19

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