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- W2122904170 abstract "The light gluino (12 - 16 GeV) and light sbottom (2 - 6 GeV) scenario has been used to explain the apparent overproduction of b-quarks at the Tevatron. This scenario also predicts the decay Z -> b b-bar ~g ~g where the gluinos subsequently decay into b-quarks and sbottoms. We show that this can contribute to the width Gamma_4b = Gamma(Z -> b b-bar b b-bar) since most of the sbottoms and b-quarks arising from gluino decay have a small angular separation. We find that while no excess in Gamma_4b is observable due to large uncertainties in experimental measurements, the ratio Gamma(Z -> b b-bar ~g ~g)/Gamma(Z -> b b-bar b b-bar) can be large due to sensitivity to b-quark mass, the sbottom mixing angle and the gluino mass. We calculate it to be in the range 0.05 - 0.41 inclusive of the entire parameter space." @default.
- W2122904170 created "2016-06-24" @default.
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- W2122904170 date "2003-05-14" @default.
- W2122904170 modified "2023-10-16" @default.
- W2122904170 title "Z→bb¯bb¯in the light gluino and light sbottom scenario" @default.
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- W2122904170 doi "https://doi.org/10.1103/physrevd.67.097703" @default.
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