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Combination and QCD analysis of charm production cross section measurements in deep-inelastic ep scattering at HERA

Measurements of open charm production cross sections in deep-inelastic ep scattering at HERA from the H1 and ZEUS Collaborations are combined. Reduced cross sections σcc̄red for charm production are obtained in the kinematic range of photon virtuality 2.5≤Q2≤2000 GeV2 and Bjorken scaling variable 3⋅...

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Main Authors: Abramowicz, Halina (Author) , Bunyatyan, A. (Author) , Dodonov, V. (Author) , Hennekemper, Eva (Author) , Herbst, Michael Clemens (Author) , Huber, Florian (Author) , Jung, A. W. (Author) , Lendermann, Victor (Author) , Pirumov, Hayk (Author) , Povh, Bogdan (Author) , Sauter, Michel David (Author) , Schöning, André (Author) , Schultz-Coulon, Hans-Christian (Author)
Corporate Author: ZEUS Collaboration, H1 Calorimeter Group (Author)
Format: Article (Journal)
Language:English
Published: 20 February 2013
In: The European physical journal. C, Particles and fields
Year: 2013, Volume: 73, Pages: 1-26
ISSN:1434-6052
DOI:10.1140/epjc/s10052-013-2311-3
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1140/epjc/s10052-013-2311-3
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Author Notes:The H1 and ZEUS Collaborations: H. Abramowicz, A. Bunyatyan, V. Dodonov, E. Hennekemper, M. Herbst, F. Huber, A.W. Jung, V. Lendermann, H. Pirumov, B. Povh, M. Sauter, A. Schöning, H.-C. Schultz-Coulon und weitere 471
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Summary:Measurements of open charm production cross sections in deep-inelastic ep scattering at HERA from the H1 and ZEUS Collaborations are combined. Reduced cross sections σcc̄red for charm production are obtained in the kinematic range of photon virtuality 2.5≤Q2≤2000 GeV2 and Bjorken scaling variable 3⋅10−5≤x≤5⋅10−2. The combination method accounts for the correlations of the systematic uncertainties among the different data sets. The combined charm data together with the combined inclusive deep-inelastic scattering cross sections from HERA are used as input for a detailed NLO QCD analysis to study the influence of different heavy flavour schemes on the parton distribution functions. The optimal values of the charm mass as a parameter in these different schemes are obtained. The implications on the NLO predictions for W± and Z production cross sections at the LHC are investigated. Using the fixed flavour number scheme, the running mass of the charm quark is determined.
Item Description:Gesehen am 05.05.2021
Physical Description:Online Resource
ISSN:1434-6052
DOI:10.1140/epjc/s10052-013-2311-3

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