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| Journal Article | PUBDB-2023-07645 |
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2023
Springer
Heidelberg
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Please use a persistent id in citations: doi:10.1140/epjc/s10052-023-12180-9 doi:10.3204/PUBDB-2023-07645
Report No.: DESY-23-129; arXiv:2309.02889
Abstract: A new measurement of inclusive-jet cross sections in the Breit frame in neutral current deep inelastic scattering using the ZEUS detector at the HERA collider is presented. The data were taken in the years 2004–2007 at a centre-of-mass energy of $318\,\,\textrm{GeV}$ and correspond to an integrated luminosity of $347\,\,\textrm{pb}^{-1}$. The jets were reconstructed using the $k_t$-algorithm in the Breit reference frame. They have been measured as a function of the squared momentum transfer, $Q^2$, and the transverse momentum of the jets in the Breit frame, $p_{\perp ,\text {Breit}}$. The measured jet cross sections are compared to previous measurements and to perturbative QCD predictions. The measurement has been used in a next-to-next-to-leading-order QCD analysis to perform a simultaneous determination of parton distribution functions of the proton and the strong coupling, resulting in a value of $\alpha _s(M_Z^2) = 0.1142 \pm 0.0017 \text {~(experimental/fit)}{}_{-0.0007}^{+0.0006} \text {~(model/parameterisation)}{}_{-0.0004}^{+0.0006} \text {~(scale)}$, whose accuracy is improved compared to similar measurements. In addition, the running of the strong coupling is demonstrated using data obtained at different scales.
Keyword(s): electron p: deep inelastic scattering ; positron p: deep inelastic scattering ; jet: leptoproduction ; parton: distribution function ; jet: transverse momentum ; quantum chromodynamics: perturbation theory ; p: distribution function ; perturbation theory: higher-order ; higher-order: 2 ; deep inelastic scattering: neutral current ; strong coupling ; ZEUS ; Breit frame ; kT algorithm ; parametrization ; momentum transfer dependence ; transverse momentum dependence ; channel cross section: measured ; DESY HERA Stor ; track data analysis: jet ; data analysis method ; experimental results ; 318 GeV-cms
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Preprint
Measurement of jet production in deep inelastic scattering and NNLO determination of the strong coupling at ZEUS
[10.3204/PUBDB-2023-05377]
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