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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Exquisite measurements of particles called beautyquarks in the LHC could reveal the answer.
Ús de b quark en anglès
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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.