https://doi.org/10.1140/epjc/s10052-018-5848-3
Regular Article - Experimental Physics
Combination and QCD analysis of charm and beauty production cross-section measurements in deep inelastic ep scattering at HERA
1
I. Physikalisches Institut der RWTH, Aachen, Germany
2
Institute of Physics and Technology of Ministry of Education and Science of Kazakhstan, Almaty, Kazakhstan
3
Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerp, Belgium
4
School of Physics and Astronomy, University of Birmingham, Birmingham, UK
5
INFN Bologna, Bologna, Italy
6
Physikalisches Institut der Universität Bonn, Bonn, Germany
7
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania
8
Department of Physics, Panjab University, Chandigarh, India
9
Physics Department and INFN, Calabria University, Cosenza, Italy
10
GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
11
Rutherford Appleton Laboratory, STFC, Didcot, Oxfordshire, UK
12
Institut für Physik, TU Dortmund, Dortmund, Germany
13
Joint Institute for Nuclear Research, Dubna, Russia
14
CERN, Geneva, Switzerland
15
Irfu/SPP, CE Saclay, Gif-sur-Yvette, France
16
School of Physics and Astronomy, University of Glasgow, Glasgow, UK
17
II. Physikalisches Institut, Universität Göttingen, Göttingen, Germany
18
Institut für Experimentalphysik, Universität Hamburg, Hamburg, Germany
19
Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany
20
Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany
21
The Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland
22
AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland
23
Department of Physics, Jagellonian University, Kraków, Poland
24
National Centre for Particle Physics, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
25
Institute for Nuclear Research, National Academy of Sciences, Kyiv, Ukraine
26
Department of Nuclear Physics, National Taras Shevchenko University of Kyiv, Kyiv, Ukraine
27
Department of Physics, University of Lancaster, Lancaster, UK
28
Department of Physics, University of Liverpool, Liverpool, UK
29
School of Physics and Astronomy, Queen Mary, University of London, London, UK
30
Physics and Astronomy Department, University College London, London, UK
31
Aix Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288, Marseille, France
32
Departamento de Fisica Aplicada, CINVESTAV, Mérida, YUC, Mexico
33
Institute for Theoretical and Experimental Physics, Moscow, Russia
34
Lebedev Physical Institute, Moscow, Russia
35
Institute for Information Transmission Problems RAS, Moscow, Russia
36
Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russian Federation
37
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia
38
Max-Planck-Institut für Physik, Munich, Germany
39
Department of Physics, York University, Ontario, Canada M3J 1P3,
40
LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
41
Department of Physics, University of Oxford, Oxford, UK
42
INFN Padova, Padova, Italy
43
Dipartimento di Fisica e Astronomia dell’ Università and INFN, Padua, Italy
44
LLR, Ecole Polytechnique, CNRS/IN2P3, Palaiseau, France
45
Department of Physics, Temple University, Philadelphia, PA, 19122, USA
46
Faculty of Science, University of Montenegro, Podgorica, Montenegro
47
Institute of Physics, Academy of Sciences of the Czech Republic, Praha, Czech Republic
48
Faculty of Mathematics and Physics, Charles University, Praha, Czech Republic
49
Department of Particle Physics and Astrophysics, Weizmann Institute, Rehovot, Israel
50
Dipartimento di Fisica Università di Roma Tre and INFN Roma 3, Rome, Italy
51
Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria
52
Raymond and Beverly Sackler Faculty of Exact Sciences, School of Physics, Tel Aviv University, Tel Aviv, Israel
53
Polytechnic University, Tokyo, Japan
54
Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
55
Università di Torino and INFN, Turin, Italy
56
Università del Piemonte Orientale, Novara, and INFN, Turin, Italy
57
Institute of Particle and Nuclear Studies, KEK, Tsukuba, Japan
58
Institute of Physics and Technology of the Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
59
Université Claude Bernard Lyon 1, CNRS/IN2P3, Villeurbanne, France
60
Paul Scherrer Institut, Villigen, Switzerland
61
Faculty of Physics, University of Warsaw, Warsaw, Poland
62
National Centre for Nuclear Research, Warsaw, Poland
63
Department of Physics and Astronomy, Purdue University 525 Northwestern Ave, West Lafayette, USA
64
Fachbereich C, Universität Wuppertal, Wuppertal, Germany
65
Yerevan Physics Institute, Yerevan, Armenia
66
Meiji Gakuin University, Faculty of General Education, Yokohama, Japan
67
Deutsches Elektronen-Synchrotron DESY, Zeuthen, Germany
68
Institut für Teilchenphysik, ETH, Zurich, Switzerland
69
Physik-Institut der Universität Zürich, Zurich, Switzerland
* e-mail: sschmitt@mail.desy.de
Received:
4
April
2018
Accepted:
26
April
2018
Published online:
9
June
2018
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 
and Bjorken scaling variable 
. 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 
GeV and 
.
© The Author(s), 2018
