Search for Fermion-Pair Decays $$Q\Qbar \to (\t\Wmp)(\tbar\Wpm)$$ in Same-Charge Dilepton Events
Journal Article
·
OSTI ID:970076
We report the most restrictive direct limits on masses of fourth-generation down-type quarks b{prime}, and quark-like composite fermions (B or T{sub 5/3}), decaying promptly to tW{sup {-+}}. 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 p{bar p} collisions with an integrated luminosity of 2.7 fb{sup -1} collected with the CDF II detector at Fermilab yields no evidence for such a signal, setting mass limits m{sub b{prime}}, m{sub B} > 338 GeV/c{sup 2} and m{sub T{sub 5/3}} > 365 GeV/c{sup 2} at 95% confidence level.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 970076
- Report Number(s):
- FERMILAB-PUB-09-628-E; arXiv eprint number arXiv:0912.1057; TRN: US1000738
- Country of Publication:
- United States
- Language:
- English
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