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Events with two leptons and a jet originating from a bquark are selected.
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In this mode each t(1) decays into a tau lepton and a bquark.
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Then in July 1977 there was another "sudden discovery", made at Fermilab: this time of a particle based on the bquark.
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The search is performed in the three bquark channel using multijet triggered events corresponding to an integrated luminosity of 1 fb(-1).
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Such a particle appears in extensions of the standard model, where a light CP-odd Higgs boson naturally couples strongly to bquarks.
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Lower limits at 95% confidence level are placed on the masses of the T and Bquarks for a range of branching fractions.
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Data recorded by the D0 experiment at the Fermilab Tevatron Collider are analyzed to search for neutral Higgs bosons produced in association with bquarks.