Contribution to a conference proceedings

PUBDB-2015-01381

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Precision QCD Measurements at HERA

Pirumov, H. (Corresponding Author)DESY* ; H1 Collaboration (Collaboration author) ; ZEUS Collaboration (Collaboration author)

2014

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Please use a persistent id in citations: doi:10.1051/epjconf/20148000024

Abstract: A review of recent experimental results on perturbative QCD from the HERA experiments H1 and ZEUS is presented. All inclusive deep inelastic cross sections measured by the H1 and ZEUS collaborations in neutral and charged current unpolarised ep scattering are combined. They span six orders of magnitude in negative four-momentum-transfer squared, Q^2, and in Bjorken x. This data set is used as the sole input to NLO and NNLO QCD analyses to determine new sets of parton distributions, HERAPDF2.0, with small experimental uncertainties and an estimate of model and parametrisation uncertainties. Also shown are new results on inclusive jet, dijet and trijet differential cross sections measured in neutral current deep inelastic scattering. The precision jet data is used to extract the strong coupling alpha_s at NLO with small experimental errors.

Keyword(s): talk: Giovinazzo 2014/06/16 ; positron p: deep inelastic scattering ; electron p: deep inelastic scattering ; quantum chromodynamics: perturbation theory ; deep inelastic scattering: neutral current ; differential cross section: measured ; cross section: measured ; parton: distribution function ; DESY HERA Stor ; ZEUS ; H1 ; experimental results ; charged current ; strong coupling ; Bjorken ; jet: multiplicity

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Contributing Institute(s):

1. H1 Kollaboration (H1)

Research Program(s):

1. Experiments at HERA (H1) (POF2-511) (POF2-511)
2. Experiments at HERA (ZEUS) (POF2-511) (POF2-511)

Experiment(s):

1. HERA: H1
2. HERA: ZEUS

Appears in the scientific report 2014

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