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Measurement of αs from the structure of particle clusters produced in hadronic Z decays

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Measurement of αs from the structure of particle clusters produced in hadronic Z decays. / ALEPH Collaboration.
In: Physics Letters B, Vol. 257, No. 3-4, 1991, p. 479-491.

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

Harvard

ALEPH Collaboration 1991, 'Measurement of αs from the structure of particle clusters produced in hadronic Z decays', Physics Letters B, vol. 257, no. 3-4, pp. 479-491. https://doi.org/10.1016/0370-2693(91)91926-M

APA

ALEPH Collaboration (1991). Measurement of αs from the structure of particle clusters produced in hadronic Z decays. Physics Letters B, 257(3-4), 479-491. https://doi.org/10.1016/0370-2693(91)91926-M

Vancouver

ALEPH Collaboration. Measurement of αs from the structure of particle clusters produced in hadronic Z decays. Physics Letters B. 1991;257(3-4):479-491. doi: 10.1016/0370-2693(91)91926-M

Author

ALEPH Collaboration. / Measurement of αs from the structure of particle clusters produced in hadronic Z decays. In: Physics Letters B. 1991 ; Vol. 257, No. 3-4. pp. 479-491.

Bibtex

@article{ef7d5e4d002b47eeb0f09dda7c1c95fe,
title = "Measurement of αs from the structure of particle clusters produced in hadronic Z decays",
abstract = "Using 106 000 hadronic events obtained with the ALEPH detector at LEP at energies close to the Z resonance peak, the strong coupling constant αs is measured by an analysis of energy-energy correlations (EEC) and the global event shape variables thrust, C-parameter and oblateness. It is shown that the theoretical uncertainties can be significantly reduced if the final state particles are first combined in clusters using a minimum scaled invariant mass cut, Ycut, before these variables are computed. The combined result from all shape variables of pre-clustered events is αs(MZ2 = 0.117±0.005 for a renormalization scale . For μ values between MZ and the b-quark mass, the result changes by −0.009+0.006.",
author = "D. Decamp and Alexander Finch and {ALEPH Collaboration}",
year = "1991",
doi = "10.1016/0370-2693(91)91926-M",
language = "English",
volume = "257",
pages = "479--491",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "ELSEVIER SCIENCE BV",
number = "3-4",

}

RIS

TY - JOUR

T1 - Measurement of αs from the structure of particle clusters produced in hadronic Z decays

AU - Decamp, D.

AU - Finch, Alexander

AU - ALEPH Collaboration

PY - 1991

Y1 - 1991

N2 - Using 106 000 hadronic events obtained with the ALEPH detector at LEP at energies close to the Z resonance peak, the strong coupling constant αs is measured by an analysis of energy-energy correlations (EEC) and the global event shape variables thrust, C-parameter and oblateness. It is shown that the theoretical uncertainties can be significantly reduced if the final state particles are first combined in clusters using a minimum scaled invariant mass cut, Ycut, before these variables are computed. The combined result from all shape variables of pre-clustered events is αs(MZ2 = 0.117±0.005 for a renormalization scale . For μ values between MZ and the b-quark mass, the result changes by −0.009+0.006.

AB - Using 106 000 hadronic events obtained with the ALEPH detector at LEP at energies close to the Z resonance peak, the strong coupling constant αs is measured by an analysis of energy-energy correlations (EEC) and the global event shape variables thrust, C-parameter and oblateness. It is shown that the theoretical uncertainties can be significantly reduced if the final state particles are first combined in clusters using a minimum scaled invariant mass cut, Ycut, before these variables are computed. The combined result from all shape variables of pre-clustered events is αs(MZ2 = 0.117±0.005 for a renormalization scale . For μ values between MZ and the b-quark mass, the result changes by −0.009+0.006.

U2 - 10.1016/0370-2693(91)91926-M

DO - 10.1016/0370-2693(91)91926-M

M3 - Journal article

VL - 257

SP - 479

EP - 491

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 3-4

ER -