https://doi.org/10.1140/epjc/s2003-01358-2
experimental physics
Jet production in charged current deep inelastic e + p scatteringat HERA
The production rates and substructure of jets have been studied in charged current deep inelastic e + p scattering for Q 2 > 200 GeV2 with the ZEUS detector at HERA using an integrated luminosity of 110.5 pb-1. Inclusive jet cross sections are presented for jets with transverse energies $E_T^{\rm jet} > 14$ GeV and pseudorapidities in the range $-1 < \eta^{\rm jet} < 2$. Dijet cross sections are presented for events with a jet having $E_T^{\rm jet} > 14$ GeV and a second jet having $E_T^{\rm jet} > 5$ GeV. Measurements of the mean subjet multiplicity, $\langle n_{\rm sbj}\rangle$, of the inclusive jet sample are presented. Predictions based on parton-shower Monte Carlo models and next-to-leading-order QCD calculations are compared to the measurements. The value of $\alpha_s(M_Z)$, determined from $\langle n_{\rm sbj}\rangle$ at $y_{\rm cut} = 10^{-2}$ for jets with $25 < E_T^{\rm jet} < 119$ GeV, is $\alpha_s(M_Z) = 0.1202 \pm 0.0052 ({\rm stat.}) ^{ + 0.0060}_{-0.0019} ({\rm syst.}) ^{ + 0.0065}_{-0.0053} ({\rm th.})$. The mean subjet multiplicity as a function of Q 2 is found to be consistent with that measured in NC DIS.
© Springer-Verlag, 2003
