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Experimental Investigation of the energy dependence of the strong coupling strength

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Experimental Investigation of the energy dependence of the strong coupling strength. / JADE Collaboration.

In: Physics Letters B, Vol. 213, No. 2, 1988, p. 235-241.

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JADE Collaboration. / Experimental Investigation of the energy dependence of the strong coupling strength. In: Physics Letters B. 1988 ; Vol. 213, No. 2. pp. 235-241.

Bibtex

@article{4d65bb29844b4abd829a8f7c406f7793,
title = "Experimental Investigation of the energy dependence of the strong coupling strength",
abstract = "The energy dependence of the relative production rate of three-jet events is studied in hadronic e+e− annihilation events at center of mass energies between 22 and 46.7 GeV. Three-jet events are defined by a jet finding algorithm which is closely related to the definition of resolvable jets used in O(αs2) perturbative QCD calculations, where the relative production rate of three-jet events is roughly proportional to the size of the strong coupling strength. The production rates of three-jet events in the data decrease significantly with increasing centre of mass energy. The experimental rates, which are independent of fragmentation model calculations, can be directly compared to theoretically calculated jet production rates and are in good agreement with the QCD expectations of a running coupling strength. The hypothesis of an energy independent coupling constant can be excluded with a significance of four standard derivations.",
author = "S. Bethke and Alexander Finch and {JADE Collaboration}",
year = "1988",
doi = "10.1016/0370-2693(88)91032-5",
language = "English",
volume = "213",
pages = "235--241",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "ELSEVIER SCIENCE BV",
number = "2",

}

RIS

TY - JOUR

T1 - Experimental Investigation of the energy dependence of the strong coupling strength

AU - Bethke, S.

AU - Finch, Alexander

AU - JADE Collaboration

PY - 1988

Y1 - 1988

N2 - The energy dependence of the relative production rate of three-jet events is studied in hadronic e+e− annihilation events at center of mass energies between 22 and 46.7 GeV. Three-jet events are defined by a jet finding algorithm which is closely related to the definition of resolvable jets used in O(αs2) perturbative QCD calculations, where the relative production rate of three-jet events is roughly proportional to the size of the strong coupling strength. The production rates of three-jet events in the data decrease significantly with increasing centre of mass energy. The experimental rates, which are independent of fragmentation model calculations, can be directly compared to theoretically calculated jet production rates and are in good agreement with the QCD expectations of a running coupling strength. The hypothesis of an energy independent coupling constant can be excluded with a significance of four standard derivations.

AB - The energy dependence of the relative production rate of three-jet events is studied in hadronic e+e− annihilation events at center of mass energies between 22 and 46.7 GeV. Three-jet events are defined by a jet finding algorithm which is closely related to the definition of resolvable jets used in O(αs2) perturbative QCD calculations, where the relative production rate of three-jet events is roughly proportional to the size of the strong coupling strength. The production rates of three-jet events in the data decrease significantly with increasing centre of mass energy. The experimental rates, which are independent of fragmentation model calculations, can be directly compared to theoretically calculated jet production rates and are in good agreement with the QCD expectations of a running coupling strength. The hypothesis of an energy independent coupling constant can be excluded with a significance of four standard derivations.

U2 - 10.1016/0370-2693(88)91032-5

DO - 10.1016/0370-2693(88)91032-5

M3 - Journal article

VL - 213

SP - 235

EP - 241

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 2

ER -