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

H. Abramowicz; I. Abt; L. Adamczyk; M. Adamus; R. Aggarwal; V. Andreev; S. Antonelli; V. Aushev; A. Baghdasaryan; K. Begzsuren; O. Behnke; U. Behrens; A. Belousov; A. Bertolin; I. Bloch; A. Bolz; V. Boudry; G. Brandt; V. Brisson; D. Britzger; I. Brock; N. H. Brook; R. Brugnera; A. Bruni; A. Buniatyan; P. J. Bussey; A. Bylinkin; L. Bystritskaya; A. Caldwell; A. J. Campbell; K. B. Cantun Avila; M. Capua; C. D. Catterall; K. Cerny; V. Chekelian; J. Chwastowski; J. Ciborowski; R. Ciesielski; J. G. Contreras; A. M. Cooper-Sarkar; M. Corradi; J. Cvach; J. B. Dainton; K. Daum; R. K. Dementiev; R. C. E. Devenish; C. Diaconu; M. Dobre; S. Dusini; G. Eckerlin; S. Egli; E. Elsen; L. Favart; A. Fedotov; J. Feltesse; M. Fleischer; A. Fomenko; B. Foster; E. Gallo; A. Garfagnini; J. Gayler; A. Geiser; A. Gizhko; L. K. Gladilin; L. Goerlich; N. Gogitidze; Yu. A. Golubkov; M. Gouzevitch; C. Grab; A. Grebenyuk; T. Greenshaw; G. Grindhammer; G. Grzelak; C. Gwenlan; D. Haidt; R. C. W. Henderson; J. Hladkỳ; O. Hlushchenko; D. Hochman; D. Hoffmann; R. Horisberger; T. Hreus; F. Huber; Z. A. Ibrahim; Y. Iga; M. Jacquet; X. Janssen; N. Z. Jomhari; A. W. Jung; H. Jung; I. Kadenko; S. Kananov; M. Kapichine; U. Karshon; J. Katzy; P. Kaur; C. Kiesling; D. Kisielewska; R. Klanner; M. Klein; U. Klein; C. Kleinwort; R. Kogler; I. A. Korzhavina; P. Kostka; A. Kotański; N. Kovalchuk; H. Kowalski; J. Kretzschmar; D. Krücker; K. Krüger; B. Krupa; O. Kuprash; M. Kuze; M. P. J. Landon; W. Lange; P. Laycock; A. Lebedev; B. B. Levchenko; S. Levonian; A. Levy; V. Libov; K. Lipka; M. Lisovyi; B. List; J. List; B. Lobodzinski; B. Löhr; E. Lohrmann; A. Longhin; O. Yu. Lukina; I. Makarenko; E. Malinovski; J. Malka; H. -U. Martyn; S. Masciocchi; S. J. Maxfield; A. Mehta; A. B. Meyer; H. Meyer; J. Meyer; S. Mikocki; F. Mohamad Idris; N. Mohammad Nasir; A. Morozov; K. Müller; V. Myronenko; K. Nagano; J. D. Nam; Th. Naumann; P. R. Newman; M. Nicassio; C. Niebuhr; G. Nowak; J. E. Olsson; J. Onderwaater; Yu. Onishchuk; D. Ozerov; C. Pascaud; G. D. Patel; E. Paul; E. Perez; W. Perlański; A. Petrukhin; I. Picuric; H. Pirumov; D. Pitzl; N. S. Pokrovskiy; R. Polifka; A. Polini; M. Przybycień; V. Radescu; N. Raicevic; T. Ravdandorj; P. Reimer; E. Rizvi; P. Robmann; R. Roosen; A. Rostovtsev; M. Rotaru; M. Ruspa; D. Šálek; D. P. C. Sankey; M. Sauter; E. Sauvan; D. H. Saxon; M. Schioppa; S. Schmitt; U. Schneekloth; L. Schoeffel; A. Schöning; T. Schörner-Sadenius; F. Sefkow; I. Selyuzhenkov; L. M. Shcheglova; S. Shushkevich; Yu. Shyrma; I. O. Skillicorn; W. Słomiński; A. Solano; Y. Soloviev; P. Sopicki; D. South; V. Spaskov; A. Specka; L. Stanco; M. Steder; N. Stefaniuk; B. Stella; A. Stern; P. Stopa; U. Straumann; B. Surrow; T. Sykora; J. Sztuk-Dambietz; E. Tassi; P. D. Thompson; K. Tokushuku; J. Tomaszewska; D. Traynor; P. Truöl; I. Tsakov; B. Tseepeldorj; T. Tsurugai; M. Turcato; O. Turkot; T. Tymieniecka; A. Valkárová; C. Vallée; P. Van Mechelen; Y. Vazdik; A. Verbytskyi; W. A. T. Wan Abdullah; D. Wegener; K. Wichmann; M. Wing; E. Wünsch; S. Yamada; Y. Yamazaki; J. Žáček; A. F. Żarnecki; L. Zawiejski; O. Zenaiev; Z. Zhang; B. O. Zhautykov; R. Žlebčík; H. Zohrabyan; F. Zomer

doi:10.1140/epjc/s10052-018-5848-3

2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2018) 78: 473
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

H. Abramowicz⁵², I. Abt³⁸, L. Adamczyk²², M. Adamus⁶², R. Aggarwal⁸, V. Andreev³⁴, S. Antonelli⁵, V. Aushev²⁶, A. Baghdasaryan⁶⁵, K. Begzsuren⁵⁸, O. Behnke¹⁹, U. Behrens¹⁹, A. Belousov³⁴, A. Bertolin⁴², I. Bloch⁶⁷, A. Bolz²⁰, V. Boudry⁴⁴, G. Brandt¹⁷, V. Brisson⁴⁰, D. Britzger²⁰, I. Brock⁶, N. H. Brook³⁰, R. Brugnera⁴³, A. Bruni⁵, A. Buniatyan⁴, P. J. Bussey¹⁶, A. Bylinkin³⁶, L. Bystritskaya³³, A. Caldwell³⁸, A. J. Campbell¹⁹, K. B. Cantun Avila³², M. Capua⁹, C. D. Catterall³⁹, K. Cerny⁴⁸, V. Chekelian³⁸, J. Chwastowski²¹, J. Ciborowski⁶¹, R. Ciesielski¹⁹, J. G. Contreras³², A. M. Cooper-Sarkar⁴¹, M. Corradi⁵, J. Cvach⁴⁷, J. B. Dainton²⁸, K. Daum⁶⁴, R. K. Dementiev³⁷, R. C. E. Devenish⁴¹, C. Diaconu³¹, M. Dobre⁷, S. Dusini⁴², G. Eckerlin¹⁹, S. Egli⁶⁰, E. Elsen¹⁴, L. Favart³, A. Fedotov³³, J. Feltesse¹⁵, M. Fleischer¹⁹, A. Fomenko³⁴, B. Foster¹⁸, E. Gallo¹⁸^,19, A. Garfagnini⁴³, J. Gayler¹⁹, A. Geiser¹⁹, A. Gizhko¹⁹, L. K. Gladilin³⁷, L. Goerlich²¹, N. Gogitidze³⁴, Yu. A. Golubkov³⁷, M. Gouzevitch⁵⁹, C. Grab⁶⁸, A. Grebenyuk³, T. Greenshaw²⁸, G. Grindhammer³⁸, G. Grzelak⁶¹, C. Gwenlan⁴¹, D. Haidt¹⁹, R. C. W. Henderson²⁷, J. Hladkỳ⁴⁷, O. Hlushchenko¹^,26, D. Hochman⁴⁹, D. Hoffmann³¹, R. Horisberger⁶⁰, T. Hreus³, F. Huber²⁰, Z. A. Ibrahim²⁴, Y. Iga⁵³, M. Jacquet⁴⁰, X. Janssen³, N. Z. Jomhari¹⁹, A. W. Jung⁶³, H. Jung¹⁹, I. Kadenko²⁶, S. Kananov⁵², M. Kapichine¹³, U. Karshon⁴⁹, J. Katzy¹⁹, P. Kaur⁸, C. Kiesling³⁸, D. Kisielewska²², R. Klanner¹⁸, M. Klein²⁸, U. Klein¹⁹^,28, C. Kleinwort¹⁹, R. Kogler¹⁸, I. A. Korzhavina³⁷, P. Kostka²⁸, A. Kotański²³, N. Kovalchuk¹⁸, H. Kowalski¹⁹, J. Kretzschmar²⁸, D. Krücker¹⁹, K. Krüger¹⁹, B. Krupa²¹, O. Kuprash¹⁹^,52, M. Kuze⁵⁴, M. P. J. Landon²⁹, W. Lange⁶⁷, P. Laycock²⁸, A. Lebedev³⁴, B. B. Levchenko³⁷, S. Levonian¹⁹, A. Levy⁵², V. Libov¹⁹, K. Lipka¹⁹, M. Lisovyi¹⁹^,20, B. List¹⁹, J. List¹⁹, B. Lobodzinski³⁸, B. Löhr¹⁹, E. Lohrmann¹⁸, A. Longhin⁴³, O. Yu. Lukina³⁷, I. Makarenko¹⁹, E. Malinovski³⁴, J. Malka¹⁹, H. -U. Martyn¹, S. Masciocchi¹⁰^,20, S. J. Maxfield²⁸, A. Mehta²⁸, A. B. Meyer¹⁹, H. Meyer⁶⁴, J. Meyer¹⁹, S. Mikocki²¹, F. Mohamad Idris²⁴, N. Mohammad Nasir²⁴, A. Morozov¹³, K. Müller⁶⁹, V. Myronenko¹⁹, K. Nagano⁵⁷, J. D. Nam⁴⁵, Th. Naumann⁶⁷, P. R. Newman⁴, M. Nicassio²⁰, C. Niebuhr¹⁹, G. Nowak²¹, J. E. Olsson¹⁹, J. Onderwaater¹⁰^,20, Yu. Onishchuk²⁶, D. Ozerov⁶⁰, C. Pascaud⁴⁰, G. D. Patel²⁸, E. Paul⁶, E. Perez¹⁴, W. Perlański⁶¹, A. Petrukhin⁵⁹, I. Picuric⁴⁶, H. Pirumov¹⁹, D. Pitzl¹⁹, N. S. Pokrovskiy², R. Polifka¹⁴, A. Polini⁵, M. Przybycień²², V. Radescu⁴¹, N. Raicevic⁴⁶, T. Ravdandorj⁵⁸, P. Reimer⁴⁷, E. Rizvi²⁹, P. Robmann⁶⁹, R. Roosen³, A. Rostovtsev³⁵, M. Rotaru⁷, M. Ruspa⁵⁶, D. Šálek⁴⁸, D. P. C. Sankey¹¹, M. Sauter²⁰, E. Sauvan³¹, D. H. Saxon¹⁶, M. Schioppa⁹, S. Schmitt¹⁹^*, U. Schneekloth¹⁹, L. Schoeffel¹⁵, A. Schöning²⁰, T. Schörner-Sadenius¹⁹, F. Sefkow¹⁹, I. Selyuzhenkov¹⁰, L. M. Shcheglova³⁷, S. Shushkevich³⁷, Yu. Shyrma²⁵, I. O. Skillicorn¹⁶, W. Słomiński²³, A. Solano⁵⁵, Y. Soloviev³⁴, P. Sopicki²¹, D. South¹⁹, V. Spaskov¹³, A. Specka⁴⁴, L. Stanco⁴², M. Steder¹⁹, N. Stefaniuk¹⁹, B. Stella⁵⁰, A. Stern⁵², P. Stopa²¹, U. Straumann⁶⁹, B. Surrow⁴⁵, T. Sykora³^,48, J. Sztuk-Dambietz¹⁸, E. Tassi⁹, P. D. Thompson⁴, K. Tokushuku⁵⁷, J. Tomaszewska⁶¹, D. Traynor²⁹, P. Truöl⁶⁹, I. Tsakov⁵¹, B. Tseepeldorj⁵⁸, T. Tsurugai⁶⁶, M. Turcato¹⁸, O. Turkot¹⁹, T. Tymieniecka⁶², A. Valkárová⁴⁸, C. Vallée³¹, P. Van Mechelen³, Y. Vazdik³⁴, A. Verbytskyi³⁸, W. A. T. Wan Abdullah²⁴, D. Wegener¹², K. Wichmann¹⁹, M. Wing³⁰, E. Wünsch¹⁹, S. Yamada⁵⁷, Y. Yamazaki⁵⁷, J. Žáček⁴⁸, A. F. Żarnecki⁶¹, L. Zawiejski²¹, O. Zenaiev¹⁹, Z. Zhang⁴⁰, B. O. Zhautykov², R. Žlebčík¹⁹, H. Zohrabyan⁶⁵ and F. Zomer⁴⁰

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

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 $2.5~\hbox {GeV}^2\le Q^2 \le 2000\, \hbox {GeV}^2$ and Bjorken scaling variable $3 \cdot 10^{-5} \le x_\mathrm{Bj} \le 5 \cdot 10^{-2}$ . 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 $m_c(m_c) = 1.290^{+0.046}_{-0.041} \mathrm{(exp/fit)}$ ${}^{+0.062}_{-0.014} \mathrm{(model)}$ ${}^{+0.003}_{-0.031} \mathrm{(parameterisation)}$ GeV and $m_b(m_b) = 4.049^{+0.104}_{-0.109} \mathrm{(exp/fit)}$ ${}^{+0.090}_{-0.032} \mathrm{(model)}$ ${}^{+0.001}_{-0.031} \mathrm{(parameterisation)}~\mathrm{GeV}$ .

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

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