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

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 σredcc̄ for charm production are obtained in the kinematic range of photon virtuality 2. 5≤Q2≤2000 GeV2 and Bjorken scaling variable 3...

Täydet tiedot

Bibliografiset tiedot
Päätekijät: Abramowicz, H, Abt, I, Adamczyk, L, Adamus, M, Aggarwal, R, Alexa, C, Andreev, V, Antonelli, S, Antonioli, P, Antonov, A, Arneodo, M, Arslan, O, Aushev, V, Aushev, Y, Bachynska, O, Baghdasaryan, A, Baghdasaryan, S, Bamberger, A, Barakbaev, A, Barbagli, G, Bari, G, Barreiro, F, Bartel, W, Bartosik, N, Bartsch, D
Aineistotyyppi: Journal article
Kieli:English
Julkaistu: 2013
Kuvaus
Yhteenveto: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 σredcc̄ for charm production are obtained in the kinematic range of photon virtuality 2. 5≤Q2≤2000 GeV2 and Bjorken scaling variable 3{dot operator}10-5≤x≤5{dot operator}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. © 2013 The Author(s).

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