Combination of differential D∗± cross-section measurements in deep-inelastic ep scattering at HERA

H1 The H1, H. Abramowicz, I. Abt, L. Adamczyk, M. Adamus, V. Andreev, S. Antonelli, V. Aushev, Y. Aushev, A. Baghdasaryan, K. Begzsuren, O. Behnke, U. Behrens, A. Belousov, A. Bertolin, I. Bloch, E. G. Boos, K. Borras, V. Boudry, G. BrandtV. 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, F. Ceccopieri, K. Cerny, V. Chekelian, J. Chwastowski, J. Ciborowski, R. Ciesielski, J. G. Contreras, A. M. Cooper-Sarkar, M. Corradi, F. Corriveau, J. Cvach, J. B. Dainton, K. Daum, R. K. Dementiev, R. C.E. Devenish, C. Diaconu, M. Dobre, V. Dodonov, G. Dolinska, S. Dusini, G. Eckerlin, S. Egli, E. Elsen, L. Favart, A. Fedotov, J. Feltesse, J. Ferencei, J. Figiel, M. Fleischer, A. Fomenko, B. Foster, E. Gabathuler, G. Gach, E. Gallo, A. Garfagnini, J. Gayler, A. Geiser, S. Ghazaryan, A. Gizhko, L. K. Gladilin, L. Goerlich, N. Gogitidze, Yu A. Golubkov, M. Gouzevitch, C. Grab, A. Grebenyuk, J. Grebenyuk, T. Greenshaw, I. Gregor, G. Grindhammer, G. Grzelak, O. Gueta, M. Guzik, D. Haidt, W. Hain, R. C.W. Henderson, J. Hladky, D. Hochman, D. Hoffmann, R. Hori, R. Horisberger, T. Hreus, F. Huber, Z. A. Ibrahim, Y. Iga, M. Ishitsuka, A. Iudin, M. Jacquet, X. Janssen, F. Januschek, N. Z. Jomhari, A. W. Jung, H. Jung, I. Kadenko, S. Kananov, M. Kapichine, U. Karshon, M. Kaur, P. Kaur, C. Kiesling, D. Kisielewska, R. Klanner, M. Klein, U. Klein, C. Kleinwort, R. Kogler, N. Kondrashova, O. Kononenko, Ie Korol, I. A. Korzhavina, P. Kostka, A. Kotanski, U. Kötz, N. Kovalchuk, H. Kowalski, J. Kretzschmar, 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, S. Limentani, K. Lipka, M. Lisovyi, B. List, J. List, E. Lobodzinska, B. Lobodzinski, B. Löhr, E. Lohrmann, A. Longhin, D. Lontkovskyi, O. Yu Lukina, I. Makarenko, E. Malinovski, J. Malka, H. U. Martyn, S. J. Maxfield, A. Mehta, S. Mergelmeyer, A. B. Meyer, H. Meyer, J. Meyer, S. Mikocki, F. Mohamad Idris, A. Morozov, N. Muhammad Nasir, K. Müller, V. Myronenko, K. Nagano, Th Naumann, P. R. Newman, C. Niebuhr, T. Nobe, D. Notz, G. Nowak, R. J. Nowak, J. E. Olsson, Yu Onishchuk, D. Ozerov, P. Pahl, C. Pascaud, G. D. Patel, E. Paul, E. Perez, W. Perlanski, A. Petrukhin, I. Picuric, H. Pirumov, D. Pitzl, R. Plačakytė, B. Pokorny, N. S. Pokrovskiy, R. Polifka, M. Przybycien, V. Radescu, N. Raicevic, T. Ravdandorj, P. Reimer, E. Rizvi, P. Robmann, P. Roloff, R. Roosen, A. Rostovtsev, M. Rotaru, I. Rubinsky, S. Rusakov, M. Ruspa, D. Šálek, D. P.C. Sankey, M. Sauter, E. Sauvan, D. H. Saxon, M. Schioppa, W. B. Schmidke, S. Schmitt*, U. Schneekloth, L. Schoeffel, A. Schöning, T. Schörner-Sadenius, F. Sefkow, L. M. Shcheglova, R. Shevchenko, O. Shkola, S. Shushkevich, Yu Shyrma, I. Singh, I. O. Skillicorn, W. Slominski, A. Solano, Y. Soloviev, P. Sopicki, D. South, V. Spaskov, A. Specka, L. Stanco, M. Steder, N. Stefaniuk, A. Stern, P. Stopa, U. Straumann, T. Sykora, J. Sztuk-Dambietz, D. Szuba, J. Szuba, E. Tassi, P. D. Thompson, K. Tokushuku, J. Tomaszewska, D. Traynor, A. Trofymov, P. Truöl, I. Tsakov, B. Tseepeldorj, T. Tsurugai, M. Turcato, O. Turkot, J. Turnau, T. Tymieniecka, A. Valkárová, C. Vallée, P. Van Mechelen, Y. Vazdik, A. Verbytskyi, O. Viazlo, R. Walczak, W. A.T. Wan Abdullah, D. Wegener, K. Wichmann, M. Wing, G. Wolf, E. Wünsch, S. Yamada, Y. Yamazaki, J. Žáček, N. Zakharchuk, A. F. Żarnecki, L. Zawiejski, O. Zenaiev, Z. Zhang, B. O. Zhautykov, N. Zhmak, R. Žlebčík, H. Zohrabyan, F. Zomer, D. S. Zotkin

*Corresponding author for this work

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Abstract

H1 and ZEUS have published single-differential cross sections for inclusive D∗±-meson production in deep-inelastic ep scattering at HERA from their respective final data sets. These cross sections are combined in the common visible phase-space region of photon virtuality Q2> 5 GeV2, electron inelasticity 0.02 < y < 0.7 and the D∗± meson’s transverse momentum pT(D) > 1.5 GeV and pseudorapidity |η(D)| < 1.5. The combination procedure takes into account all correlations, yielding significantly reduced experimental uncertainties. Double-differential cross sections d2σ/dQ2dy are combined with earlier D∗± data, extending the kinematic range down to Q2> 1.5 GeV2. Perturbative next-to-leading-order QCD predictions are compared to the results.

Original languageEnglish
Article number149
JournalJournal of High Energy Physics
Volume2015
Issue number9
DOIs
StatePublished - 1 Sep 2015

Funding

FundersFunder number
Science and Technology Facilities CouncilST/K001310/1, ST/L001195/1, ST/M001407/1, ST/N000447/1, PP/E000355/1, ST/K00137X/1, ST/H00100X/1, ST/K001418/1, ST/M001474/1, ST/L003112/1, ST/H00100X/2, ST/K000705/1
Science and Technology Facilities Council

    Keywords

    • Charm physics
    • Heavy quark production
    • Lepton-Nucleon Scattering
    • QCD

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