Measurement of αs(M2                      Z) from hadronic event observables at the Z0 resonance

SLD Collaboration

doi:10.1103/PhysRevD.51.962

Measurement of α_s(M² _Z) from hadronic event observables at the Z⁰ resonance

SLD Collaboration

Tohoku University
University of Illinois at Urbana-Champaign
Sogang University
Stanford Linear Accelerator Center, Stanford University
University of Padua
Rutgers - The State University of New Jersey, New Brunswick
Yale University
University of Wisconsin-Madison
University of Colorado Boulder
Massachusetts Institute of Technology
Columbia University
National Institute for Nuclear Physics
University of Perugia
University of California at Santa Cruz
University of Oregon
University of Tennessee, Knoxville
University of Washington
University of California at Santa Barbara
University of Pisa
University of Genoa
Boston University
Brunel University London
University of Cincinnati
Rutherford Appleton Laboratory

Research output: Contribution to journal › Article › peer-review

150 Scopus citations

Abstract

The strong coupling αs(MZ2) has been measured using hadronic decays of Z0 bosons collected by the SLD experiment at SLAC. The data were compared with QCD predictions both at fixed order O(αs2) and including resummed analytic formulas based on the next-to-leading logarithm approximation. In this comprehensive analysis we studied event shapes, jet rates, particle correlations, and angular energy flow, and checked the consistency between αs(MZ2) values extracted from these different measures. Combining all results we obtain αs(MZ2)= 0.1200±0.0025 (expt) ±0.0078 (theor), where the dominant uncertainty is from uncalculated higher order contributions.

Original language	English
Pages (from-to)	962-984
Number of pages	23
Journal	Physical Review D
Volume	51
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.51.962
State	Published - 1995

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10.1103/PhysRevD.51.962

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@article{2e1daa5e50424f31a1068d9d4e9a019e,

title = "Measurement of αs(M2 Z) from hadronic event observables at the Z0 resonance",

abstract = "The strong coupling αs(MZ2) has been measured using hadronic decays of Z0 bosons collected by the SLD experiment at SLAC. The data were compared with QCD predictions both at fixed order O(αs2) and including resummed analytic formulas based on the next-to-leading logarithm approximation. In this comprehensive analysis we studied event shapes, jet rates, particle correlations, and angular energy flow, and checked the consistency between αs(MZ2) values extracted from these different measures. Combining all results we obtain αs(MZ2)= 0.1200±0.0025 (expt) ±0.0078 (theor), where the dominant uncertainty is from uncalculated higher order contributions.",

author = "\{SLD Collaboration\} and K. Abe and I. Abt and Ahn, \{C. J.\} and T. Akagi and Ash, \{W. W.\} and D. Aston and N. Bacchetta and Baird, \{K. G.\} and C. Baltay and Band, \{H. R.\} and Barakat, \{M. B.\} and G. Baranko and O. Bardon and T. Barklow and Bazarko, \{A. O.\} and R. Ben-David and Benvenuti, \{A. C.\} and T. Bienz and Bilei, \{G. M.\} and D. Bisello and G. Blaylock and Bogart, \{J. R.\} and T. Bolton and Bower, \{G. R.\} and Brau, \{J. E.\} and M. Breidenbach and Bugg, \{W. M.\} and D. Burke and Burnett, \{T. H.\} and Burrows, \{P. N.\} and W. Busza and A. Calcaterra and Caldwell, \{D. O.\} and D. Calloway and B. Camanzi and M. Carpinelli and R. Cassell and R. Castaldi and A. Castro and M. Cavalli-Sforza and E. Church and Cohn, \{H. O.\} and Coller, \{J. A.\} and V. Cook and R. Cotton and Cowan, \{R. F.\} and Coyne, \{D. G.\} and A. D'Oliveira and Damerell, \{C. J.S.\} and H. Park",

note = "Publisher Copyright: {\textcopyright} 1995 The American Physical Society",

year = "1995",

doi = "10.1103/PhysRevD.51.962",

language = "English",

volume = "51",

pages = "962--984",

journal = "Physical Review D",

issn = "0556-2821",

publisher = "American Institute of Physics",

number = "3",

}

TY - JOUR

T1 - Measurement of αs(M2 Z) from hadronic event observables at the Z0 resonance

AU - SLD Collaboration

AU - Abe, K.

AU - Abt, I.

AU - Ahn, C. J.

AU - Akagi, T.

AU - Ash, W. W.

AU - Aston, D.

AU - Bacchetta, N.

AU - Baird, K. G.

AU - Baltay, C.

AU - Band, H. R.

AU - Barakat, M. B.

AU - Baranko, G.

AU - Bardon, O.

AU - Barklow, T.

AU - Bazarko, A. O.

AU - Ben-David, R.

AU - Benvenuti, A. C.

AU - Bienz, T.

AU - Bilei, G. M.

AU - Bisello, D.

AU - Blaylock, G.

AU - Bogart, J. R.

AU - Bolton, T.

AU - Bower, G. R.

AU - Brau, J. E.

AU - Breidenbach, M.

AU - Bugg, W. M.

AU - Burke, D.

AU - Burnett, T. H.

AU - Burrows, P. N.

AU - Busza, W.

AU - Calcaterra, A.

AU - Caldwell, D. O.

AU - Calloway, D.

AU - Camanzi, B.

AU - Carpinelli, M.

AU - Cassell, R.

AU - Castaldi, R.

AU - Castro, A.

AU - Cavalli-Sforza, M.

AU - Church, E.

AU - Cohn, H. O.

AU - Coller, J. A.

AU - Cook, V.

AU - Cotton, R.

AU - Cowan, R. F.

AU - Coyne, D. G.

AU - D'Oliveira, A.

AU - Damerell, C. J.S.

AU - Park, H.

PY - 1995

Y1 - 1995

N2 - The strong coupling αs(MZ2) has been measured using hadronic decays of Z0 bosons collected by the SLD experiment at SLAC. The data were compared with QCD predictions both at fixed order O(αs2) and including resummed analytic formulas based on the next-to-leading logarithm approximation. In this comprehensive analysis we studied event shapes, jet rates, particle correlations, and angular energy flow, and checked the consistency between αs(MZ2) values extracted from these different measures. Combining all results we obtain αs(MZ2)= 0.1200±0.0025 (expt) ±0.0078 (theor), where the dominant uncertainty is from uncalculated higher order contributions.

AB - The strong coupling αs(MZ2) has been measured using hadronic decays of Z0 bosons collected by the SLD experiment at SLAC. The data were compared with QCD predictions both at fixed order O(αs2) and including resummed analytic formulas based on the next-to-leading logarithm approximation. In this comprehensive analysis we studied event shapes, jet rates, particle correlations, and angular energy flow, and checked the consistency between αs(MZ2) values extracted from these different measures. Combining all results we obtain αs(MZ2)= 0.1200±0.0025 (expt) ±0.0078 (theor), where the dominant uncertainty is from uncalculated higher order contributions.

UR - https://www.scopus.com/pages/publications/4243216414

U2 - 10.1103/PhysRevD.51.962

DO - 10.1103/PhysRevD.51.962

M3 - Article

AN - SCOPUS:4243216414

SN - 0556-2821

VL - 51

SP - 962

EP - 984

JO - Physical Review D

JF - Physical Review D

IS - 3

ER -

Measurement of α_s(M² _Z) from hadronic event observables at the Z⁰ resonance

Abstract

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