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Measurements are presented of R b, the ratio of the bb̄ cross-section to the qq̄ cross-section in e+e− collisions, and the forward-backward asymmetry A FB b at twelve energy points in the range √s=130 –207 GeV. These results are found to be consistent with the Standard Model expectations. The measurements are used to set limits on new physics scenarios involving contact interactions.
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Abdallah et al. (2009) studied this question.
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