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A measurement of Rb using a double tagging method

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A measurement of Rb using a double tagging method. / OPAL Collaboration.
In: European Physical Journal C: Particles and Fields, Vol. 8, No. 2, 04.1999, p. 217-239.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

OPAL Collaboration 1999, 'A measurement of Rb using a double tagging method', European Physical Journal C: Particles and Fields, vol. 8, no. 2, pp. 217-239. https://doi.org/10.1007/s100529901087

APA

OPAL Collaboration (1999). A measurement of Rb using a double tagging method. European Physical Journal C: Particles and Fields, 8(2), 217-239. https://doi.org/10.1007/s100529901087

Vancouver

OPAL Collaboration. A measurement of Rb using a double tagging method. European Physical Journal C: Particles and Fields. 1999 Apr;8(2):217-239. doi: 10.1007/s100529901087

Author

OPAL Collaboration. / A measurement of Rb using a double tagging method. In: European Physical Journal C: Particles and Fields. 1999 ; Vol. 8, No. 2. pp. 217-239.

Bibtex

@article{d41653f14c334f9ea0863c8c78b91e79,
title = "A measurement of Rb using a double tagging method",
abstract = "The fraction of Z0→bb¯¯¯Z0→bb¯ events in hadronic Z0Z0 decays has been measured by the OPAL experiment using the data collected at LEP between 1992 and 1995. The Z0→bb¯¯¯Z0→bb¯ decays were tagged using displaced secondary vertices, and high momentum electrons and muons. Systematic uncertainties were reduced by measuring the b-tagging efficiency using a double tagging technique. Efficiency correlations between opposite hemispheres of an event are small, and are well understood through comparisons between real and simulated data samples. A value of was obtained, where the first error is statistical and the second systematic. The uncertainty on RcRc , the fraction of Z0→cc¯¯Z0→cc¯ events in hadronic Z0Z0 decays, is not included in the errors. The dependence on RcRc is where $\Delta R_{\rm c}$ is the deviation of RcRc from the value 0.172 predicted by the Standard Model. The result for RbRb agrees with the value of 0.2155±0.00030.2155±0.0003 predicted by the Standard Model.",
author = "Vakhtang Kartvelishvili and {OPAL Collaboration}",
year = "1999",
month = apr,
doi = "10.1007/s100529901087",
language = "English",
volume = "8",
pages = "217--239",
journal = "European Physical Journal C: Particles and Fields",
issn = "1434-6044",
publisher = "SPRINGER",
number = "2",

}

RIS

TY - JOUR

T1 - A measurement of Rb using a double tagging method

AU - Kartvelishvili, Vakhtang

AU - OPAL Collaboration

PY - 1999/4

Y1 - 1999/4

N2 - The fraction of Z0→bb¯¯¯Z0→bb¯ events in hadronic Z0Z0 decays has been measured by the OPAL experiment using the data collected at LEP between 1992 and 1995. The Z0→bb¯¯¯Z0→bb¯ decays were tagged using displaced secondary vertices, and high momentum electrons and muons. Systematic uncertainties were reduced by measuring the b-tagging efficiency using a double tagging technique. Efficiency correlations between opposite hemispheres of an event are small, and are well understood through comparisons between real and simulated data samples. A value of was obtained, where the first error is statistical and the second systematic. The uncertainty on RcRc , the fraction of Z0→cc¯¯Z0→cc¯ events in hadronic Z0Z0 decays, is not included in the errors. The dependence on RcRc is where $\Delta R_{\rm c}$ is the deviation of RcRc from the value 0.172 predicted by the Standard Model. The result for RbRb agrees with the value of 0.2155±0.00030.2155±0.0003 predicted by the Standard Model.

AB - The fraction of Z0→bb¯¯¯Z0→bb¯ events in hadronic Z0Z0 decays has been measured by the OPAL experiment using the data collected at LEP between 1992 and 1995. The Z0→bb¯¯¯Z0→bb¯ decays were tagged using displaced secondary vertices, and high momentum electrons and muons. Systematic uncertainties were reduced by measuring the b-tagging efficiency using a double tagging technique. Efficiency correlations between opposite hemispheres of an event are small, and are well understood through comparisons between real and simulated data samples. A value of was obtained, where the first error is statistical and the second systematic. The uncertainty on RcRc , the fraction of Z0→cc¯¯Z0→cc¯ events in hadronic Z0Z0 decays, is not included in the errors. The dependence on RcRc is where $\Delta R_{\rm c}$ is the deviation of RcRc from the value 0.172 predicted by the Standard Model. The result for RbRb agrees with the value of 0.2155±0.00030.2155±0.0003 predicted by the Standard Model.

U2 - 10.1007/s100529901087

DO - 10.1007/s100529901087

M3 - Journal article

VL - 8

SP - 217

EP - 239

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

SN - 1434-6044

IS - 2

ER -