Measurement ofαs(Q2)from the Gross–Llewellyn Smith Sum Rule

J H Kim,T Kinnel,U K Yang,E G Stern,J Yu,H Schellman,W Marsh,K S Mcfarland,P De Barbaro,M H Shaevitz,L De Barbaro,W H Smith,M J Lamm,A O Bazarko,S R Mishra,A Bodek,R A Johnson,R H Bernstein,T Bolton,D Naples,C Mcnulty,M Vakili,W K Sakumoto,P Spentzouris,A Romosan,W Seligman ,C Arroyo ,J M Conrad ,King B ,H S Budd ,F Sciulli ,Deborah A Harris ,W.c Lefmann ,P.z Quintas

doi:10.1103/physrevlett.81.3595

Measurement ofαs(Q2)from the Gross–Llewellyn Smith Sum Rule

J H Kim, T Kinnel + Show 32 more

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https://doi.org/10.1103/physrevlett.81.3595

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Journal: Physical Review Letters	Publication Date: Oct 26, 1998
Citations: 76

Affiliation: Columbia University, University of Wisconsin–Madison, University of Rochester, Fermi National Accelerator Laboratory, Northwestern University, University of Cincinnati, Kansas State University

#Test Of Perturbative QCD #Low Q2 + Show 8 more

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Abstract

We extract a set of values for the Gross–Llewellyn Smith sum rule at different values of 4-momentum transfer squared ( Q2), by combining revised CCFR neutrino data with data from other neutrino deep-inelastic scattering experiments for 1<Q2<15GeV2/c2. A comparison with the order αs3 theoretical predictions yields a determination of αs at the scale of the Z-boson mass of 0.114±0.0120.009. This measurement provides a new and useful test of perturbative QCD at low Q2, because of the low uncertainties in the higher order calculations.Received 8 May 1998DOI:https://doi.org/10.1103/PhysRevLett.81.3595©1998 American Physical Society

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