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Measurements of Rb in e+e− collisions at s between 182 and 209 GeV
- Source :
- Physics Letters B. 609:212-225
- Publication Year :
- 2005
- Publisher :
- Elsevier BV, 2005.
-
Abstract
- Measurements of R b , the ratio of the b b ¯ cross-section to the q 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 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.
Details
- ISSN :
- 03702693
- Volume :
- 609
- Database :
- OpenAIRE
- Journal :
- Physics Letters B
- Accession number :
- edsair.doi...........7a66d0122e6af043ee8104371b193a4d