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


Mueller, Katharina; Robmann, Peter; Straumann, Ulrich; Truoel, Peter; et al (2018). Combination and QCD analysis of charm and beauty production cross-section measurements in deep inelastic ep scattering at HERA. European Physical Journal C - Particles and Fields, 78(6):473.

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≤2000GeV2 and Bjorken scaling variable 3⋅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) +0.062−0.014(model) +0.003−0.031(parameterisation) GeV and mb(mb)=4.049+0.104−0.109(exp/fit) +0.090−0.032(model) +0.001−0.031(parameterisation) GeV .

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≤2000GeV2 and Bjorken scaling variable 3⋅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) +0.062−0.014(model) +0.003−0.031(parameterisation) GeV and mb(mb)=4.049+0.104−0.109(exp/fit) +0.090−0.032(model) +0.001−0.031(parameterisation) GeV .

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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Uncontrolled Keywords:Physics and Astronomy (miscellaneous), Engineering (miscellaneous)
Language:English
Date:1 June 2018
Deposited On:18 Dec 2018 17:16
Last Modified:18 Dec 2018 17:20
Publisher:Springer
ISSN:1434-6044
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1140/epjc/s10052-018-5848-3

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