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Determination of the b quark mass at the Z mass scale

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Determination of the b quark mass at the Z mass scale. / OPAL Collaboration.
In: European Physical Journal C: Particles and Fields, Vol. 21, No. 3, 07.2001, p. 411-422.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

OPAL Collaboration 2001, 'Determination of the b quark mass at the Z mass scale', European Physical Journal C: Particles and Fields, vol. 21, no. 3, pp. 411-422. https://doi.org/10.1007/s100520100746

APA

OPAL Collaboration (2001). Determination of the b quark mass at the Z mass scale. European Physical Journal C: Particles and Fields, 21(3), 411-422. https://doi.org/10.1007/s100520100746

Vancouver

OPAL Collaboration. Determination of the b quark mass at the Z mass scale. European Physical Journal C: Particles and Fields. 2001 Jul;21(3):411-422. doi: 10.1007/s100520100746

Author

OPAL Collaboration. / Determination of the b quark mass at the Z mass scale. In: European Physical Journal C: Particles and Fields. 2001 ; Vol. 21, No. 3. pp. 411-422.

Bibtex

@article{80e75252886f4256be5832fa3e989db3,
title = "Determination of the b quark mass at the Z mass scale",
abstract = "In hadronic decays of Z bosons recorded with the OPAL detector at LEP, events containing b quarks were selected using the long lifetime of b flavoured hadrons. Comparing the 3-jet rate in b events with that in d,u,s and c quark events, a significant difference was observed. Using O(α2S) calculations for massive quarks, this difference was used to determine the b quark mass in the MS¯ renormalisation scheme at the scale of the Z boson mass. By combining the results from seven different jet finders the running b quark mass was determined to be m¯b(mZ)=(2.67±0.03(stat.)+0.29−0.37(syst.)±0.19(theo.))GeV. Evolving this value to the b quark mass scale itself yields m¯b(m¯b)=(3.95+0.52−0.62)GeV, consistent with results obtained at the b quark production threshold. This determination confirms the QCD expectation of a scale dependent quark mass. A constant mass is ruled out by 3.9 standard deviations.",
author = "Bailey, {Ian Richard} and Vakhtang Kartvelishvili and {OPAL Collaboration}",
year = "2001",
month = jul,
doi = "10.1007/s100520100746",
language = "English",
volume = "21",
pages = "411--422",
journal = "European Physical Journal C: Particles and Fields",
issn = "1434-6044",
publisher = "SPRINGER",
number = "3",

}

RIS

TY - JOUR

T1 - Determination of the b quark mass at the Z mass scale

AU - Bailey, Ian Richard

AU - Kartvelishvili, Vakhtang

AU - OPAL Collaboration

PY - 2001/7

Y1 - 2001/7

N2 - In hadronic decays of Z bosons recorded with the OPAL detector at LEP, events containing b quarks were selected using the long lifetime of b flavoured hadrons. Comparing the 3-jet rate in b events with that in d,u,s and c quark events, a significant difference was observed. Using O(α2S) calculations for massive quarks, this difference was used to determine the b quark mass in the MS¯ renormalisation scheme at the scale of the Z boson mass. By combining the results from seven different jet finders the running b quark mass was determined to be m¯b(mZ)=(2.67±0.03(stat.)+0.29−0.37(syst.)±0.19(theo.))GeV. Evolving this value to the b quark mass scale itself yields m¯b(m¯b)=(3.95+0.52−0.62)GeV, consistent with results obtained at the b quark production threshold. This determination confirms the QCD expectation of a scale dependent quark mass. A constant mass is ruled out by 3.9 standard deviations.

AB - In hadronic decays of Z bosons recorded with the OPAL detector at LEP, events containing b quarks were selected using the long lifetime of b flavoured hadrons. Comparing the 3-jet rate in b events with that in d,u,s and c quark events, a significant difference was observed. Using O(α2S) calculations for massive quarks, this difference was used to determine the b quark mass in the MS¯ renormalisation scheme at the scale of the Z boson mass. By combining the results from seven different jet finders the running b quark mass was determined to be m¯b(mZ)=(2.67±0.03(stat.)+0.29−0.37(syst.)±0.19(theo.))GeV. Evolving this value to the b quark mass scale itself yields m¯b(m¯b)=(3.95+0.52−0.62)GeV, consistent with results obtained at the b quark production threshold. This determination confirms the QCD expectation of a scale dependent quark mass. A constant mass is ruled out by 3.9 standard deviations.

U2 - 10.1007/s100520100746

DO - 10.1007/s100520100746

M3 - Journal article

VL - 21

SP - 411

EP - 422

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

SN - 1434-6044

IS - 3

ER -