Measurements of Rb at Lepii Energies

Details Measurements of Rb at Lepii Energies Measurements of Rb at Lepii Energies

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006fuin.conf..274r&link_type=abstract

FUNDAMENTAL INTERACTIONS. Proceedings of the 20th Lake Louise Winter Institute. Held 20-26 February 2005 in Lake Louise, Alberta

Computer Science

Scientific paper

Measurements of Rb, the ratio of the b/line{b} cross-section to the q/line{q} cross-section in e+e- collisions, are presented. The data were collected by the OPAL experiment at LEP at centre-of-mass energies between 182 GeV and 209 GeV. Lepton, lifetime and event-shape information is used to tag events containing b quarks with high efficiency. The data are compatible with the Standard Model expectation. The mean ratio of the eight measurements reported here to the Standard Model prediction is 1.055 ± 0.031 ± 0.037, where the first error is statistical and the second systematic.

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