A Systematic Study of QCD Coupling Constant from DeepInelastic Measurements
Abstract
We reanalyze deepinelastic scattering data of the BCDMS Collaboration by including proper cuts of ranges with large systematic errors. We also perform the fits of highstatistic deepinelastic scattering data of the BCDMS, SLAC, NM, and BFP Collaborations taking the data separately and in a combined way and find good agreement between these analyses. We extract the values of both the QCD coupling constant {alpha}{sub s}(M{sup 2}{sub Z}) up to the NLO level and of the power corrections to the structure function F{sub 2}. The fits of the combined data for the nonsinglet part of the structure function F{sub 2} predict the coupling constant value {alpha}{sub s}(M{sup 2}{sub Z}) = 0.1174 {+} 0.0007 (stat.) {+} 0.0019 (syst.) {+} 0.0010 (norm.) (or QCD parameter {lambda}{sup (5)}{sub MS} = 204 {+} 25 (total experimental error) MeV). The fits of the combined data for both the nonsinglet part and the singlet part lead to the values {alpha}{sub s}(M{sup 2}{sub Z}) = 0.1177 {+} 0.0007 (stat.) {+} 0.0021 (syst.) {+} 0.0009 (norm.) (or QCD parameter {lambda}{sup (5)}{sub MS} = (208 {+} 27 (total experimental error) MeV). The above values are in very good agreement with each other. We estimate theoretical uncertainties for {alpha}{sub s}(M{sup 2}{submore »
 Authors:
 Joint Institute for Nuclear Research, Dubna, Moscow oblast, 141980 (Russian Federation)
 Publication Date:
 OSTI Identifier:
 20692908
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physics of Atomic Nuclei; Journal Volume: 68; Journal Issue: 11; Other Information: Translated from Yadernaya Fizika, ISSN 00440027, 68, 19351965 (No. 11, 2005); DOI: 10.1134/1.2131117; (c) 2005 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA); TN:
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CORRECTIONS; COUPLING CONSTANTS; DATA ANALYSIS; DEEP INELASTIC SCATTERING; ERRORS; MEV RANGE; QUANTUM CHROMODYNAMICS; STRUCTURE FUNCTIONS
Citation Formats
Krivokhizhin, V.G., and Kotikov, A.V. A Systematic Study of QCD Coupling Constant from DeepInelastic Measurements. United States: N. p., 2005.
Web. doi:10.1134/1.2131117.
Krivokhizhin, V.G., & Kotikov, A.V. A Systematic Study of QCD Coupling Constant from DeepInelastic Measurements. United States. doi:10.1134/1.2131117.
Krivokhizhin, V.G., and Kotikov, A.V. Tue .
"A Systematic Study of QCD Coupling Constant from DeepInelastic Measurements". United States.
doi:10.1134/1.2131117.
@article{osti_20692908,
title = {A Systematic Study of QCD Coupling Constant from DeepInelastic Measurements},
author = {Krivokhizhin, V.G. and Kotikov, A.V.},
abstractNote = {We reanalyze deepinelastic scattering data of the BCDMS Collaboration by including proper cuts of ranges with large systematic errors. We also perform the fits of highstatistic deepinelastic scattering data of the BCDMS, SLAC, NM, and BFP Collaborations taking the data separately and in a combined way and find good agreement between these analyses. We extract the values of both the QCD coupling constant {alpha}{sub s}(M{sup 2}{sub Z}) up to the NLO level and of the power corrections to the structure function F{sub 2}. The fits of the combined data for the nonsinglet part of the structure function F{sub 2} predict the coupling constant value {alpha}{sub s}(M{sup 2}{sub Z}) = 0.1174 {+} 0.0007 (stat.) {+} 0.0019 (syst.) {+} 0.0010 (norm.) (or QCD parameter {lambda}{sup (5)}{sub MS} = 204 {+} 25 (total experimental error) MeV). The fits of the combined data for both the nonsinglet part and the singlet part lead to the values {alpha}{sub s}(M{sup 2}{sub Z}) = 0.1177 {+} 0.0007 (stat.) {+} 0.0021 (syst.) {+} 0.0009 (norm.) (or QCD parameter {lambda}{sup (5)}{sub MS} = (208 {+} 27 (total experimental error) MeV). The above values are in very good agreement with each other. We estimate theoretical uncertainties for {alpha}{sub s}(M{sup 2}{sub Z}) at +0.0047 and 0.0057 from fits of the combined data when complete singlet and nonsinglet Q{sup 2} evolution is taken into account.},
doi = {10.1134/1.2131117},
journal = {Physics of Atomic Nuclei},
number = 11,
volume = 68,
place = {United States},
year = {Tue Nov 01 00:00:00 EST 2005},
month = {Tue Nov 01 00:00:00 EST 2005}
}

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