2018 Impact factor 4.843
Particles and Fields
Eur. Phys. J. C 6, 575-585
DOI 10.1007/s100529901014


Multi-jet event rates in deep inelastic scattering
and determination of the strong coupling constant

H1 Collaboration

C. Adloff34 - et al.

34 Fachbereich Physik, Bergische Universität Gesamthochschule Wuppertal, Wuppertal, Germany

Received: 20 July 1998 / Revised version: 20 August 1998 / Published online: 25 January 1999

Abstract
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 $\alpha_{s}(M_Z^{2})$ is determined evaluating the jet event rates. Values of $\alpha_{s}(Q^{2})$ are extracted in four different bins of the negative squared momentum transfer Q2 in the range from 40 GeV$^2\,$to 4000 GeV$^2\,$. A combined fit of the renormalization group equation to these several $\alpha_{s}(Q^{2})$ values results in $\alpha_{s}(M_Z^{2})= 0.117 \pm 0.003 \,(stat) \,
 ^{+\,0.009}_{-\,0.013} \,(sys) \,
 + 0.006 \,(jet\; algorithm)$.


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