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Tests of the standard model and constraints on new physics from measurements of fermion-pair production at 130–172 GeV at LEP

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Tests of the standard model and constraints on new physics from measurements of fermion-pair production at 130–172 GeV at LEP. / OPAL Collaboration.
In: European Physical Journal C: Particles and Fields, Vol. 2, No. 3, 04.1998, p. 441-472.

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

Harvard

OPAL Collaboration 1998, 'Tests of the standard model and constraints on new physics from measurements of fermion-pair production at 130–172 GeV at LEP', European Physical Journal C: Particles and Fields, vol. 2, no. 3, pp. 441-472. https://doi.org/10.1007/s100529800851

APA

OPAL Collaboration (1998). Tests of the standard model and constraints on new physics from measurements of fermion-pair production at 130–172 GeV at LEP. European Physical Journal C: Particles and Fields, 2(3), 441-472. https://doi.org/10.1007/s100529800851

Vancouver

OPAL Collaboration. Tests of the standard model and constraints on new physics from measurements of fermion-pair production at 130–172 GeV at LEP. European Physical Journal C: Particles and Fields. 1998 Apr;2(3):441-472. doi: 10.1007/s100529800851

Author

OPAL Collaboration. / Tests of the standard model and constraints on new physics from measurements of fermion-pair production at 130–172 GeV at LEP. In: European Physical Journal C: Particles and Fields. 1998 ; Vol. 2, No. 3. pp. 441-472.

Bibtex

@article{54846cc50ebb4e9797ead847d353c638,
title = "Tests of the standard model and constraints on new physics from measurements of fermion-pair production at 130–172 GeV at LEP",
abstract = "Production of events with hadronic and leptonic final states has been measured in e+e−e+e− collisions at centre-of-mass energies of 130–172 GeV, using the OPAL detector at LEP. Cross-sections and leptonic forward-backward asymmetries are presented, both including and excluding the dominant production of radiative Z γγ events, and compared to Standard Model expectations. The ratio RbRb of the cross-section for bb¯bb¯ production to the hadronic cross-section has been measured. In a model-independent fit to the Z lineshape, the data have been used to obtain an improved precision on the measurement of γγ -Z interference. The energy dependence of αemαem has been investigated. The measurements have also been used to obtain limits on extensions of the Standard Model described by effective four-fermion contact interactions, to search for tt -channel contributions from new massive particles and to place limits on gaugino pair production with subsequent decay of the gaugino into a light gluino and a quark pair.",
author = "Vakhtang Kartvelishvili and {OPAL Collaboration}",
year = "1998",
month = apr,
doi = "10.1007/s100529800851",
language = "English",
volume = "2",
pages = "441--472",
journal = "European Physical Journal C: Particles and Fields",
issn = "1434-6044",
publisher = "SPRINGER",
number = "3",

}

RIS

TY - JOUR

T1 - Tests of the standard model and constraints on new physics from measurements of fermion-pair production at 130–172 GeV at LEP

AU - Kartvelishvili, Vakhtang

AU - OPAL Collaboration

PY - 1998/4

Y1 - 1998/4

N2 - Production of events with hadronic and leptonic final states has been measured in e+e−e+e− collisions at centre-of-mass energies of 130–172 GeV, using the OPAL detector at LEP. Cross-sections and leptonic forward-backward asymmetries are presented, both including and excluding the dominant production of radiative Z γγ events, and compared to Standard Model expectations. The ratio RbRb of the cross-section for bb¯bb¯ production to the hadronic cross-section has been measured. In a model-independent fit to the Z lineshape, the data have been used to obtain an improved precision on the measurement of γγ -Z interference. The energy dependence of αemαem has been investigated. The measurements have also been used to obtain limits on extensions of the Standard Model described by effective four-fermion contact interactions, to search for tt -channel contributions from new massive particles and to place limits on gaugino pair production with subsequent decay of the gaugino into a light gluino and a quark pair.

AB - Production of events with hadronic and leptonic final states has been measured in e+e−e+e− collisions at centre-of-mass energies of 130–172 GeV, using the OPAL detector at LEP. Cross-sections and leptonic forward-backward asymmetries are presented, both including and excluding the dominant production of radiative Z γγ events, and compared to Standard Model expectations. The ratio RbRb of the cross-section for bb¯bb¯ production to the hadronic cross-section has been measured. In a model-independent fit to the Z lineshape, the data have been used to obtain an improved precision on the measurement of γγ -Z interference. The energy dependence of αemαem has been investigated. The measurements have also been used to obtain limits on extensions of the Standard Model described by effective four-fermion contact interactions, to search for tt -channel contributions from new massive particles and to place limits on gaugino pair production with subsequent decay of the gaugino into a light gluino and a quark pair.

U2 - 10.1007/s100529800851

DO - 10.1007/s100529800851

M3 - Journal article

VL - 2

SP - 441

EP - 472

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

SN - 1434-6044

IS - 3

ER -