A Study of b bbar Production in e+e- Collisions at sqrt(s) = 130-207 GeV
DELPHI Collaboration: J. Abdallah, et al
TL;DR
This paper reports measurements of b bbar production ratios and asymmetries in electron-positron collisions at energies 130-207 GeV, confirming Standard Model predictions and constraining new physics models.
Contribution
It provides new experimental data on b bbar production and asymmetry at high energies, and sets limits on contact interaction scenarios beyond the Standard Model.
Findings
Results are consistent with Standard Model expectations.
Limits are set on new physics contact interactions.
Provides precise measurements across multiple energy points.
Abstract
Measurements are presented of R_b, the ratio of the b bbar cross-section to the q qbar cross-section in e+e- collisions, and the forward-backward asymmetry A^b_FB at twelve energy points in the range sqrt(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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