/ Experiment-HEP arXiv:0907.2643


Measurement of the Charm and Beauty Structure Functions using the H1 Vertex Detector at HERA


Aaron, F.D. (Bucharest U.) ; Aldaya Martin, M. (DESY) ; Alexa, C. (Bucharest, IFIN-HH) ; Alimujiang, K. (DESY) ; Andreev, V. (Lebedev Inst.) ; Antunovic, B. (DESY) ; Asmone, A. (INFN, Rome3) ; Backovic, S. (Montenegro U.) ; Baghdasaryan, A. (Yerevan Phys. Inst.) ; Barrelet, E. (Paris U., VI-VII) ; Bartel, W. (DESY) ; Begzsuren, K. (Ulan Bator, Inst. Phys. Tech.) ; Belousov, A. (Lebedev Inst.) ; Bizot, J.C. (Orsay, LAL) ; Boudry, V. (Ecole Polytechnique) ; Bozovic-Jelisavcic, I. (VINCA Inst. Nucl. Sci., Belgrade) ; Bracinik, J. (Birmingham U.) ; Brandt, G. (DESY) ; Brinkmann, M. (Hamburg U.) ; Brisson, V. (Orsay, LAL) ; Bruncko, D. (Kosice, IEF) ; Bunyatyan, A. (Yerevan Phys. Inst.) ; Buschhorn, G. (Munich, Max Planck Inst.) ; Bystritskaya, L. (Moscow, ITEP) ; Campbell, A.J. (DESY) ; Cantun Avila, K.B. (Merida, IPN) ; Cassol-Brunner, F. (Marseille, CPPM) ; Cerny, K. (Charles U.) ; Cerny, V. (Comenius U.) ; Chekelian, V. (Munich, Max Planck Inst.) ; Cholewa, A. (DESY) ; Contreras, J.G. (Merida, IPN) ; Coughlan, J.A. (Rutherford) ; Cozzika, G. (DSM, DAPNIA, Saclay) ; Cvach, J. (Prague, Inst. Phys.) ; Dainton, J.B. (Liverpool U.) ; Daum, K. (Wuppertal U.) ; Deak, M. (DESY) ; de Boer, Y. (DESY) ; Delcourt, B. (Orsay, LAL) ; Del Degan, M. (Zurich, ETH) ; Delvax, J. (Antwerp U., WISINF) ; De Wolf, E.A. (Antwerp U., WISINF) ; Diaconu, C. (Marseille, CPPM) ; Dodonov, V. (Heidelberg, Max Planck Inst.) ; Dossanov, A. (Munich, Max Planck Inst.) ; Dubak, A. (Munich, Max Planck Inst.) ; Eckerlin, G. (DESY) ; Efremenko, V. (Moscow, ITEP) ; Egli, S. (PSI, Villigen) ; Eliseev, A. (Lebedev Inst.) ; Elsen, E. (DESY) ; Falkiewicz, A. (Cracow, INP) ; Favart, L. (Antwerp U., WISINF) ; Fedotov, A. (Moscow, ITEP) ; Felst, R. (DESY) ; Feltesse, J. (Hamburg U.) ; Ferencei, J. (Kosice, IEF) ; Fischer, D.-J. (DESY) ; Fleischer, M. (DESY) ; Fomenko, A. (Lebedev Inst.) ; Gabathuler, E. (Liverpool U.) ; Gayler, J. (DESY) ; Ghazaryan, Samvel (Yerevan Phys. Inst.) ; Glazov, A. (DESY) ; Glushkov, I. (DESY, Zeuthen) ; Goerlich, L. (Cracow, INP) ; Gogitidze, N. (Lebedev Inst.) ; Gouzevitch, M. (Ecole Polytechnique) ; Grab, C. (Zurich, ETH) ; Greenshaw, T. (Liverpool U.) ; Grell, B.R. (DESY) ; Grindhammer, G. (Munich, Max Planck Inst.) ; Habib, S. (World Lab, Lausanne) ; Haidt, D. (DESY) ; Helebrant, C. (DESY) ; Henderson, R.C.W. (Lancaster U.) ; Hennekemper, E. (Kirchhoff Inst. Phys.) ; Henschel, H. (DESY, Zeuthen) ; Herbst, M. (Kirchhoff Inst. Phys.) ; Herrera, G. (CINVESTAV, IPN) ; Hildebrandt, M. (PSI, Villigen) ; Hiller, K.H. (DESY, Zeuthen) ; Hoffmann, D. (Marseille, CPPM) ; Horisberger, R. (PSI, Villigen) ; Hreus, T. (Kosice U.) ; Jacquet, M. (Orsay, LAL) ; Janssen, M.E. (DESY) ; Janssen, X. (Antwerp U., WISINF) ; Jonsson, L. (Lund U.) ; Jung, Andreas Werner (Kirchhoff Inst. Phys.) ; Jung, H. (DESY) ; Kapichine, M. (Dubna, JINR) ; Katzy, J. (DESY) ; Kenyon, I.R. (Birmingham U.) ; Kiesling, C. (Munich, Max Planck Inst.) ; Klein, M. (Liverpool U.) ; Kleinwort, C. (DESY) ; Kluge, T. (Liverpool U.) ; Knutsson, A. (DESY) ; Kogler, R. (Munich, Max Planck Inst.) ; Kostka, P. (DESY, Zeuthen) ; Kraemer, M. (DESY) ; Krastev, K. (DESY) ; Kretzschmar, J. (Liverpool U.) ; Kropivnitskaya, A. (Moscow, ITEP) ; Kruger, K. (Kirchhoff Inst. Phys.) ; Kutak, K. (DESY) ; Landon, M.P.J. (Queen Mary, U. of London) ; Lange, W. (DESY, Zeuthen) ; Lastovicka-Medin, G. (Montenegro U.) ; Laycock, P. (Liverpool U.) ; Lebedev, A. (Lebedev Inst.) ; Leibenguth, G. (Zurich, ETH) ; Lendermann, V. (Kirchhoff Inst. Phys.) ; Levonian, S. (DESY) ; Li, G. (Orsay, LAL) ; Lipka, K. (Hamburg U.) ; Liptaj, A. (Munich, Max Planck Inst.) ; List, B. (Hamburg U.) ; List, J. (DESY) ; Loktionova, N. (Lebedev Inst.) ; Lopez-Fernandez, R. (CINVESTAV, IPN) ; Lubimov, V. (Moscow, ITEP) ; Lytkin, L. (Heidelberg, Max Planck Inst.) ; Makankine, A. (Dubna, JINR) ; Malinovski, E. (Lebedev Inst.) ; Marage, P. (Antwerp U., WISINF) ; Marti, Ll. (DESY) ; Martyn, H.-U. (Aachen, Tech. Hochsch.) ; Maxfield, S.J. (Liverpool U.) ; Mehta, A. (Liverpool U.) ; Meyer, A.B. (DESY) ; Meyer, H. (DESY) ; Meyer, H. (Wuppertal U., Dept. Math.) ; Meyer, J. (DESY) ; Michels, V. (DESY) ; Mikocki, S. (Cracow, INP) ; Milcewicz-Mika, I. (Cracow, INP) ; Moreau, F. (Ecole Polytechnique) ; Morozov, A. (Dubna, JINR) ; Morris, J.V. (Rutherford) ; Mozer, Matthias Ulrich (Antwerp U., WISINF) ; Mudrinic, M. (VINCA Inst. Nucl. Sci., Belgrade) ; Muller, K. (Zurich U.) ; Murin, P. (Kosice U.) ; Naumann, Th. (DESY, Zeuthen) ; Newman, P.R. (Birmingham U.) ; Niebuhr, C. (DESY) ; Nikiforov, A. (DESY) ; Nowak, G. (Cracow, INP) ; Nowak, K. (Zurich U.) ; Nozicka, M. (DESY) ; Olivier, B. (Munich, Max Planck Inst.) ; Olsson, J.E. (DESY) ; Osman, S. (Lund U.) ; Ozerov, D. (Moscow, ITEP) ; Palichik, V. (Dubna, JINR) ; Panagoulias, I. (Natl. Tech. U., Athens) ; Pandurovic, M. (VINCA Inst. Nucl. Sci., Belgrade) ; Papadopoulou, Th. (Natl. Tech. U., Athens) ; Pascaud, C. (Orsay, LAL) ; Patel, G.D. (Liverpool U.) ; Pejchal, O. (Charles U.) ; Perez, E. (CERN) ; Petrukhin, A. (Moscow, ITEP) ; Picuric, I. (Montenegro U.) ; Piec, S. (DESY, Zeuthen) ; Pitzl, D. (DESY) ; Placakyte, R. (DESY) ; Pokorny, B. (Hamburg U.) ; Polifka, R. (Charles U.) ; Povh, B. (Heidelberg, Max Planck Inst.) ; Preda, T. (Bucharest, IFIN-HH) ; Radescu, V. (DESY) ; Rahmat, A.J. (Liverpool U.) ; Raicevic, N. (Montenegro U.) ; Raspiareza, A. (Munich, Max Planck Inst.) ; Ravdandorj, T. (Ulan Bator, Inst. Phys. Tech.) ; Reimer, P. (Prague, Inst. Phys.) ; Rizvi, E. (Queen Mary, U. of London) ; Robmann, P. (Zurich U.) ; Roland, B. (Antwerp U., WISINF) ; Roosen, R. (Antwerp U., WISINF) ; Rostovtsev, A. (Moscow, ITEP) ; Rotaru, M. (Bucharest, IFIN-HH) ; Ruiz Tabasco, J.E. (Merida, IPN) ; Rurikova, Z. (DESY) ; Rusakov, S. (Lebedev Inst.) ; Salek, D. (Charles U.) ; Sankey, D.P.C. (Rutherford) ; Sauter, M. (Zurich, ETH) ; Sauvan, E. (Marseille, CPPM) ; Schmitt, S. (DESY) ; Schoeffel, L. (DSM, DAPNIA, Saclay) ; Schoning, A. (Heidelberg U.) ; Schultz-Coulon, H.-C. (Kirchhoff Inst. Phys.) ; Sefkow, F. (DESY) ; Shaw-West, R.N. (Birmingham U.) ; Shtarkov, L.N. (Lebedev Inst.) ; Shushkevich, S. (Munich, Max Planck Inst.) ; Sloan, T. (Lancaster U.) ; Smiljanic, Ivan (VINCA Inst. Nucl. Sci., Belgrade) ; Soloviev, Y. (Lebedev Inst.) ; Sopicki, P. (Cracow, INP) ; South, D. (Dortmund U.) ; Spaskov, V. (Dubna, JINR) ; Specka, Arnd E. (Ecole Polytechnique) ; Staykova, Z. (DESY) ; Steder, M. (DESY) ; Stella, B. (INFN, Rome3) ; Stoicea, G. (Bucharest, IFIN-HH) ; Straumann, U. (Zurich U.) ; Sunar, D. (Antwerp U., WISINF) ; Sykora, T. (Antwerp U., WISINF) ; Tchoulakov, V. (Dubna, JINR) ; Thompson, G. (Queen Mary, U. of London) ; Thompson, P.D. (Birmingham U.) ; Toll, T. (DESY) ; Tomasz, F. (Kosice, IEF) ; Tran, T.H. (Orsay, LAL) ; Traynor, D. (Queen Mary, U. of London) ; Trinh, T.N. (Marseille, CPPM) ; Truol, P. (Zurich U.) ; Tsakov, I. (Sofiya, Inst. Nucl. Res.) ; Tseepeldorj, B. (Mongolian Natl. U.) ; Turnau, J. (Cracow, INP) ; Urban, K. (Kirchhoff Inst. Phys.) ; Valkarova, A. (Charles U.) ; Vallee, C. (Marseille, CPPM) ; Van Mechelen, P. (Antwerp U., WISINF) ; Vargas Trevino, A. (DESY) ; Vazdik, Y. (Lebedev Inst.) ; Vinokurova, S. (DESY) ; Volchinski, V. (Yerevan Phys. Inst.) ; von den Driesch, M. (DESY) ; Wegener, D. (Dortmund U.) ; Wissing, Ch. (DESY) ; Wunsch, E. (DESY) ; Zacek, J. (Charles U.) ; Zalesak, J. (Prague, Inst. Phys.) ; Zhang, Z. (Orsay, LAL) ; Zhokin, A. (Moscow, ITEP) ; Zimmermann, T. (Zurich, ETH) ; Zohrabyan, H. (Yerevan Phys. Inst.) ; Zomer, F. (Orsay, LAL) ; Zus, R. (Bucharest, IFIN-HH)

Published in: Eur.Phys.J.
Year: 2010
Vol.: C65
Page No: 89-109
Pages: 40

Abstract: Inclusive charm and beauty cross sections are measured in e-p and e+p neutral current collisions at HERA in the kinematic region of photon virtuality 5<Q^2<2000 GeV^2 and Bjorken scaling variable 0.0002<x<0.05. The data were collected with the H1 detector in the years 2006 and 2007 corresponding to an integrated luminosity of 189 pb^-1. The numbers of charm and beauty events are determined using variables reconstructed by the H1 vertex detector including the impact parameter of tracks to the primary vertex and the position of the secondary vertex. The measurements are combined with previous data and compared to QCD predictions.

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