A ZEUS next-to-leading-order QCD analysis of data on deep inelastic scattering

By S. Chekanov, D. Krakauer, S. Magill, B. Musgrave, J. Repond, R. Yoshida, P. Antonioli, G. Bari, M. Basile, L. Bellagamba and 342 more. 2002

159 citations recorded by the source corpus.

Next-to-leading order QCD analyses of the ZEUS data on deep inelastic scattering together with fixed-target data have been perfomed, from which the gluon and the quark densities of the proton and the value of the strong coupling constant, alpha_s(M_Z), were extracted. The study includes a full treatment of the experimental systematic uncertainties including point-to-point correlations. The resulting uncertainties in the parton density functions are presented. A combined fit for alpha_s(M_Z) and the gluon and qurak densities yields a value of alpha_s(M_Z) in agreement with the world average. The parton density functions derived from ZEUS data alone indicate the importance of HERA data in determining sea quark and gluon distributions at low x. The limits of applicability of the theoretical formalism have been explored by comparing the fit predictions to ZEUS data at very low Q^2.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/1529891dc045d760e84a202d91a84444c7867c96

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In Nuclear and High Energy Physics

Citations in the corpus

The high energy neutrino cross-section in the Standard Model and its uncertainty (2011, methodology): “J H E P 0 8 ( 2 0 1 1 ) 0 4 2 present authors (CSS) evaluated [30] the cross-sections at NLO using the ZEUS PDFs which included more modern HERA data [29] and using a systematic procedure for estimating PDF uncertainties.”