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Search for new bottomlike quark pair decays QQ-->(tW(+)(-))(tW(+)(-)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 T{5/3}), decaying promptly to tW{-/+}. We search for a significant excess of events with two same-charge leptons (e, mu), 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 li...

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Authors


Aaltonen, T More by this author
Adelman, J More by this author
González, BA More by this author
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Journal:
Physical review letters
Volume:
104
Issue:
9
Pages:
091801
Publication date:
2010-03-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:f17db748-3cd4-4c24-8ade-281bd1641472
Source identifiers:
124761
Local pid:
pubs:124761
Language:
English
Keywords:

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