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Measurement of the longitudinal and transverse cross-section in e+ e- annihilation at s**(1/2) = 35-GeV to 44-GeV

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>27/09/2001
<mark>Journal</mark>Physics Letters B
Number of pages10
<mark>Original language</mark>English


An investigation of the polar angle distribution of charged hadrons is presented using data taken by the JADE experiment at the PETRA e+e− collider at centre-of-mass energies of 35 and 44 GeV. From fits to the polar angle distribution the longitudinal, σL, and transverse, σT, cross-section relative to the total hadronic are determined at an average energy scale of 36.6 GeV. The results are , , where total errors are given and the results are exactly anticorrelated. Using the next-to-leading order QCD prediction for the longitudinal cross-section, the value of the strong coupling constant is obtained in agreement with the world average value of αS evolved to an energy scale of 36.6 GeV.