Abramowicz, H;
Abt, I;
Adamczyk, L;
Adamus, M;
Aggarwal, R;
Andreev, V;
Antonelli, S;
... Zomer, F; + view all
(2018)
Combination and QCD analysis of charm and beauty production cross-section measurements in deep inelastic ep scattering at HERA.
The European Physical Journal C
, 78
(6)
, Article 473. 10.1140/epjc/s10052-018-5848-3.
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Abstract
Measurements of open charm and beauty production cross sections in deep inelastic ep scattering at HERA from the H1 and ZEUS Collaborations are combined. Reduced cross sections are obtained in the kinematic range of negative four-momentum transfer squared of the photon 2.5 GeV2≤Q2≤2000GeV22.5 GeV2≤Q2≤2000GeV2 and Bjorken scaling variable 3⋅10−5≤xBj≤5⋅10−23⋅10−5≤xBj≤5⋅10−2 . The combination method accounts for the correlations of the statistical and systematic uncertainties among the different datasets. Perturbative QCD calculations are compared to the combined data. A next-to-leading order QCD analysis is performed using these data together with the combined inclusive deep inelastic scattering cross sections from HERA. The running charm- and beauty-quark masses are determined as mc(mc)=1.290+0.046−0.041(exp/fit)mc(mc)=1.290−0.041+0.046(exp/fit) +0.062−0.014(model)−0.014+0.062(model) +0.003−0.031(parameterisation)−0.031+0.003(parameterisation) GeV and mb(mb)=4.049+0.104−0.109(exp/fit)mb(mb)=4.049−0.109+0.104(exp/fit) +0.090−0.032(model)−0.032+0.090(model) +0.001−0.031(parameterisation) GeV−0.031+0.001(parameterisation) GeV .
| Type: | Article |
|---|---|
| Title: | Combination and QCD analysis of charm and beauty production cross-section measurements in deep inelastic ep scattering at HERA |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1140/epjc/s10052-018-5848-3 |
| Publisher version: | https://doi.org/10.1140/epjc/s10052-018-5848-3 |
| Language: | English |
| Additional information: | This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
| Keywords: | Science & Technology, Physical Sciences, Physics, Particles & Fields, Physics, D-ASTERISK(+/-) MESON PRODUCTION, 3-LOOP SPLITTING FUNCTIONS, OPERATOR MATRIX-ELEMENTS, H1 VERTEX DETECTOR, D-ASTERISK, FRAGMENTATION FUNCTIONS, O(ALPHA-S) CORRECTIONS, PERTURBATION-THEORY, PARTON DENSITIES, E&E ANNIHILATION |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10052815 |
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