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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Exquisite measurements of particles called beautyquarks in the LHC could reveal the answer.
Uso de bottom quark en inglés
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The horizontal axis is the measured mass of bottomquark-antiquark pairs.
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Knowing when a bottomquark was produced can be very important.
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Each stop is assumed to decay into a lepton, bottomquark, and supersymmetric neutrino.
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Then, a scalar bottomquark can decay into a bottomquark and a neutralino.
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The theory predicts that 58% of Higgs bosons will produce a bottomquark and anti-quark when they decay.
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We observe no significant excess of events above background for a W' boson decaying to a top and bottomquark pair.
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But if some of them meet somewhere else, then that was probably the point at which a particle containing a bottomquark decayed.
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For example, when a Higgs boson is produced it is expected to decay (about 70% of the time) to a bottomquark and anti-quark pair.
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For instance, when the negatively charged heavy bottomquark in a B meson drops a generation, it usually becomes a middleweight, positively charged "charm" quark.
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Facebook Twitter Pinterest ATLAS data on the decay of the Higgs boson to bottomquarks.
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The Tevatron looked for two bottomquarks.
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A search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottomquarks is presented.
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It is difficult because there are many, many ways of producing bottomquarks at the LHC which have nothing much to do with the Higgs.