Measurement of R(b) in e+ e- collisions at 182-GeV to 209-GeV - INSPIRE

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Measurement of R(b) in e+ e- collisions at 182-GeV to 209-GeV

OPAL

Collaboration

•

G. Abbiendi

Oct, 2004

21 pages

Published in:

Phys.Lett.B 609 (2005) 212-225

e-Print:

hep-ex/0410034 [hep-ex]

DOI:

10.1016/j.physletb.2005.01.031

Report number:

CERN-PH-EP-2004-051

Experiments:

CERN-LEP-OPAL

View in:

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Abstract:

Measurements of Rb, the ratio of the bbbar cross-section to the qqbar 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.

electron positron: colliding beams
electron positron: annihilation
quark: pair production
particle identification: bottom
channel cross section: ratio
energy dependence
charm
quark: fragmentation
electroweak interaction: validity test
OPAL

References(43)

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