Multi-Jet Event Rates in Deep-Inelastic Scattering and Determination of the Strong Coupling Constant
par Adloff, Catherine;Clerbaux, Barbara 
;Favart, Laurent ;Marage, Pierre ; [et al.]
Référence European Physical Journal C. Particles and Fields, 6, page (575-585)
Publication Publié, 1999
;Favart, Laurent ;Marage, Pierre ; [et al.]Référence European Physical Journal C. Particles and Fields, 6, page (575-585)
Publication Publié, 1999
Article révisé par les pairs
| Résumé : | Jet event rates in deep inelastic ep scattering at HERA are investigated applying the modified JADE jet algorithm. The data are corrected for detector and hadronization effects and then compared with perturbative QCD predictions using next-to-leading order calculations. The strong coupling constant αs(M2Z) is determined evaluating the jet event rates. Values of αs(Q2) are extracted in four different bins of the negative squared momentum transfer Q2 in the range from 40 GeV2 to 4000 GeV2 . A combined fit of the renormalization group equation to these several αs(Q2) values results in αs(M2Z) = 0.117 ± 0.003 (stat)+0.009-0.013 (sys) + 0.006 (jet algorithm). |
