Search for New Bottomlike Quark Pair Decays QQ̅ →(tW∓)(t̅ W±) in Same-Charge Dilepton Events

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dc.contributor University of Helsinki, Department of Physics en
dc.contributor University of Helsinki, Helsinki Institute of Physics en
dc.contributor University of Helsinki, Helsinki Institute of Physics (HIP) (-2009) en
dc.contributor University of Helsinki, Department of Physics en
dc.contributor University of Helsinki, Department of Physics en
dc.contributor University of Helsinki, Department of Physics en
dc.contributor.author Aaltonen, T.
dc.contributor.author Mehtala, P.
dc.contributor.author Maki, T.
dc.contributor.author Orava, R.
dc.contributor.author Saarikko, H.
dc.contributor.author Osterberg, K.
dc.contributor.author CDF Collaboration
dc.date.accessioned 2010-12-16T14:33:30Z
dc.date.available 2010-12-16T14:33:30Z
dc.date.issued 2010
dc.identifier.citation Aaltonen , T , Mehtala , P , Maki , T , Orava , R , Saarikko , H , Osterberg , K & CDF Collaboration 2010 , ' Search for New Bottomlike Quark Pair Decays QQ̅ →(tW∓)(t̅ W±) in Same-Charge Dilepton Events ' , Physical Review Letters , vol 104 , no. 9 , pp. 091801 . en
dc.identifier.other PURE: 7610459
dc.identifier.other ArXiv: http://arxiv.org/abs/0912.1057v1
dc.identifier.uri http://hdl.handle.net/10138/24118
dc.description.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 pp̅ 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. en
dc.description.abstract We report the most restrictive direct limits on masses of fourth-generation down-type quarks $b^{\prime}$, and quark-like composite fermions ($B$ or $T_{5/3}$), decaying promptly to $t W^{\mp}$. 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 $p\overline{p}$ 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 $m_{b^{\prime}}, m_{B} >$ 338 $\mathrm{GeV}/c^2$ and $m_{T_{5/3}} >$ 365 $\mathrm{GeV}/c^2$ at 95% confidence level. fi
dc.format.extent 8
dc.language.iso eng
dc.publisher American Institute of Physics
dc.relation.ispartof Physical Review Letters
dc.relation.uri http://prl.aps.org/pdf/PRL/v104/i9/e091801
dc.subject 114 Physical sciences en
dc.title Search for New Bottomlike Quark Pair Decays QQ̅ →(tW∓)(t̅ W±) in Same-Charge Dilepton Events en
dc.title.alternative Search for Fermion-Pair Decays $Q\Qbar \to (\t\Wmp)(\tbar\Wpm)$ in Same-Charge Dilepton Events en
dc.type A1 Refereed journal article
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevLett.104.091801
dc.type.dcmitype document
dc.type.uri info:eu-repo/semantics/article
dc.contributor.uhperson Aaltonen, T.
dc.contributor.uhperson Mehtala, P.
dc.contributor.uhperson Maki, T.
dc.contributor.uhperson Orava, R.
dc.contributor.uhperson Saarikko, H.
dc.contributor.uhperson Osterberg, K.
dc.relation.issn 0031-9007

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