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1998•Modern Physics Letters AOpen access

INDICATIONS FOR AN ANOMALOUS RIGHT-HANDED COUPLING OF THE b-QUARK FROM A MODEL-INDEPENDENT ANALYSIS OF LEP AND SLD DATA ON Z DECAYS

J.H. Field

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Abstract

A model-independent analysis is made using the LEP and SLD data on Z decays available at the end of 1996. The effective weak coupling constants of leptons, c quarks and b quarks are extracted. Except for the right-handed b-quark coupling, they all agree with the predictions of the standard electroweak model for mt=180 GeV and mH=100 GeV. The right-handed b-quark coupling is found to be 42% and 3.2 standard deviations above the standard model prediction.

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A model-independent analysis is made using the LEP and SLD data on Z decays available at the end of 1996. The effective weak coupling constants of leptons, c quarks and b quarks are extracted. Except for the right-handed b-quark coupling, they all agree with the predictions of the standard electroweak model for mt=180 GeV and mH=100 GeV. The right-handed b-quark coupling is found to be 42% and 3.2 standard deviations above the standard model prediction.

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Available abstract

A model-independent analysis is made using the LEP and SLD data on Z decays available at the end of 1996. The effective weak coupling constants of leptons, c quarks and b quarks are extracted. Except for the right-handed b-quark coupling, they all agree with the predictions of the standard electroweak model for mt=180 GeV and mH=100 GeV. The right-handed b-quark coupling is found to be 42% and 3.2 standard deviations above the standard model prediction.

Key concepts: Physics, Particle physics, Electroweak interaction, Standard Model (mathematical formulation), Quark, Lepton, Coupling (piping), Top quark

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INDICATIONS FOR AN ANOMALOUS RIGHT-HANDED COUPLING OF THE b-QUARK FROM A MODEL-INDEPENDENT ANALYSIS OF LEP AND SLD DATA ON Z DECAYS — Research Paper | ScholarLens