Measurement of D ∗± meson production and determination of at low Q 2 in deep-inelastic scattering at HERA

F.D. Aaron; C. Alexa; V. Andreev; S. Backovic; A. Baghdasaryan; S. Baghdasaryan; E. Barrelet; W. Bartel; K. Begzsuren; A. Belousov; P. Belov; J.C. Bizot; M.-O. Boenig; V. Boudry; I. Bozovic-Jelisavcic; J. Bracinik; G. Brandt; M. Brinkmann; V. Brisson; D. Britzger; D. Bruncko; A. Bunyatyan; G. Buschhorn; L. Bystritskaya; A.J. Campbell; K.B. Cantun Avila; F. Ceccopieri; K. Cerny; V. Cerny; V. Chekelian; J.G. Contreras; J.A. Coughlan; J. Cvach; J.B. Dainton; K. Daum; B. Delcourt; J. Delvax; E.A. Wolf; C. Diaconu; M. Dobre; V. Dodonov; A. Dossanov; A. Dubak; G. Eckerlin; S. Egli; A. Eliseev; E. Elsen; L. Favart; A. Fedotov; R. Felst; J. Feltesse; J. Ferencei; D.-J. Fischer; M. Fleischer; A. Fomenko; E. Gabathuler; J. Gayler; S. Ghazaryan; A. Glazov; L. Goerlich; N. Gogitidze; M. Gouzevitch; C. Grab; A. Grebenyuk; T. Greenshaw; B.R. Grell; G. Grindhammer; S. Habib; D. Haidt; C. Helebrant; R.C.W. Henderson; E. Hennekemper; H. Henschel; M. Herbst; G. Herrera; M. Hildebrandt; K.H. Hiller; D. Hoffmann; R. Horisberger; T. Hreus; F. Huber; M. Jacquet; X. Janssen; L. Jönsson; A.W. Jung; H. Jung; M. Kapichine; I.R. Kenyon; C. Kiesling; M. Klein; C. Kleinwort; T. Kluge; R. Kogler; P. Kostka; M. Kraemer; J. Kretzschmar; K. Krüger; M.P.J. Landon; W. Lange; G. Laštovička-Medin; P. Laycock; A. Lebedev; V. Lendermann; S. Levonian; K. Lipka; B. List; J. List; R. Lopez-Fernandez; V. Lubimov; A. Makankine; E. Malinovski; P. Marage; H.-U. Martyn; S.J. Maxfield; A. Mehta; A.B. Meyer; H. Meyer; J. Meyer; S. Mikocki; I. Milcewicz-Mika; F. Moreau; A. Morozov; J.V. Morris; M. Mudrinic; K. Müller; Th. Naumann; P.R. Newman; C. Niebuhr; D. Nikitin; G. Nowak; K. Nowak; J.E. Olsson; D. Ozerov; P. Pahl; V. Palichik; I. Panagoulias; M. Pandurovic; Th. Papadopoulou; C. Pascaud; G.D. Patel; E. Perez; A. Petrukhin; I. Picuric; S. Piec; H. Pirumov; D. Pitzl; R. Plačakytė; B. Pokorny; R. Polifka; B. Povh; V. Radescu; N. Raicevic; T. Ravdandorj; P. Reimer; E. Rizvi; P. Robmann; R. Roosen; A. Rostovtsev; M. Rotaru; J.E. Ruiz Tabasco; S. Rusakov; D. Šálek; D.P.C. Sankey; M. Sauter; E. Sauvan; S. Schmitt; L. Schoeffel; A. Schöning; H.-C. Schultz-Coulon; F. Sefkow; L.N. Shtarkov; S. Shushkevich; T. Sloan; I. Smiljanic; Y. Soloviev; P. Sopicki; D. South; V. Spaskov; A. Specka; Z. Staykova; M. Steder; B. Stella; G. Stoicea; U. Straumann; T. Sykora; P.D. Thompson; T. Toll; T.H. Tran; D. Traynor; P. Truöl; I. Tsakov; B. Tseepeldorj; J. Turnau; K. Urban; A. Valkárová; C. Vallée; P. Mechelen; Y. Vazdik; D. Wegener; E. Wünsch; J. Žáček; J. Zálešák; Z. Zhang; A. Zhokin; H. Zohrabyan; F. Zomer

doi:10.1140/epjc/s10052-011-1769-0

2023 Impact factor 4.2

Particles and Fields

Open Access

This article has an erratum: [https://doi.org/10.1140/epjc/s10052-012-2252-2]

Eur. Phys. J. C (2011) 71: 1769
https://doi.org/10.1140/epjc/s10052-011-1769-0

Regular Article - Experimental Physics

Measurement of D ^∗± meson production and determination of $F_{2}^{c\bar{c}}$ at low Q ² in deep-inelastic scattering at HERA

The H1 Collaboration
F.D. Aaron⁵, C. Alexa⁵, V. Andreev²⁵, S. Backovic³⁰, A. Baghdasaryan³⁸, S. Baghdasaryan³⁸, E. Barrelet²⁹, W. Bartel¹¹, K. Begzsuren³⁵, A. Belousov²⁵, P. Belov¹¹, J.C. Bizot²⁷, M.-O. Boenig⁸, V. Boudry²⁸, I. Bozovic-Jelisavcic², J. Bracinik³, G. Brandt¹¹, M. Brinkmann¹¹, V. Brisson²⁷, D. Britzger¹¹, D. Bruncko¹⁶, A. Bunyatyan¹³^,38, G. Buschhorn²⁶, L. Bystritskaya²⁴, A.J. Campbell¹¹, K.B. Cantun Avila²², F. Ceccopieri⁴, K. Cerny³², V. Cerny¹⁶, V. Chekelian²⁶, J.G. Contreras²², J.A. Coughlan⁶, J. Cvach³¹, J.B. Dainton¹⁸, K. Daum³⁷, B. Delcourt²⁷, J. Delvax⁴, E.A. Wolf⁴, C. Diaconu²¹, M. Dobre¹², V. Dodonov¹³, A. Dossanov²⁶, A. Dubak³⁰, G. Eckerlin¹¹, S. Egli³⁶, A. Eliseev²⁵, E. Elsen¹¹, L. Favart⁴, A. Fedotov²⁴, R. Felst¹¹, J. Feltesse¹⁰, J. Ferencei¹⁶, D.-J. Fischer¹¹, M. Fleischer¹¹, A. Fomenko²⁵, E. Gabathuler¹⁸, J. Gayler¹¹, S. Ghazaryan¹¹, A. Glazov¹¹, L. Goerlich⁷, N. Gogitidze²⁵, M. Gouzevitch¹¹, C. Grab⁴⁰, A. Grebenyuk¹¹, T. Greenshaw¹⁸, B.R. Grell¹¹, G. Grindhammer²⁶, S. Habib¹¹, D. Haidt¹¹, C. Helebrant¹¹, R.C.W. Henderson¹⁷, E. Hennekemper¹⁵, H. Henschel³⁹, M. Herbst¹⁵, G. Herrera²³, M. Hildebrandt³⁶, K.H. Hiller³⁹, D. Hoffmann²¹, R. Horisberger³⁶, T. Hreus⁴, F. Huber¹⁴, M. Jacquet²⁷, X. Janssen⁴, L. Jönsson²⁰, A.W. Jung¹⁵, H. Jung¹¹^,4, M. Kapichine⁹, I.R. Kenyon³, C. Kiesling²⁶, M. Klein¹⁸, C. Kleinwort¹¹, T. Kluge¹⁸, R. Kogler¹¹, P. Kostka³⁹, M. Kraemer¹¹, J. Kretzschmar¹⁸, K. Krüger¹⁵^*, M.P.J. Landon¹⁹, W. Lange³⁹, G. Laštovička-Medin³⁰, P. Laycock¹⁸, A. Lebedev²⁵, V. Lendermann¹⁵, S. Levonian¹¹, K. Lipka¹¹, B. List¹², J. List¹¹, R. Lopez-Fernandez²³, V. Lubimov²⁴, A. Makankine⁹, E. Malinovski²⁵, P. Marage⁴, H.-U. Martyn¹, S.J. Maxfield¹⁸, A. Mehta¹⁸, A.B. Meyer¹¹, H. Meyer³⁷, J. Meyer¹¹, S. Mikocki⁷, I. Milcewicz-Mika⁷, F. Moreau²⁸, A. Morozov⁹, J.V. Morris⁶, M. Mudrinic², K. Müller⁴¹, Th. Naumann³⁹, P.R. Newman³, C. Niebuhr¹¹, D. Nikitin⁹, G. Nowak⁷, K. Nowak¹¹, J.E. Olsson¹¹, D. Ozerov²⁴, P. Pahl¹¹, V. Palichik⁹, I. Panagoulias¹¹, M. Pandurovic², Th. Papadopoulou¹¹, C. Pascaud²⁷, G.D. Patel¹⁸, E. Perez¹⁰, A. Petrukhin¹¹, I. Picuric³⁰, S. Piec¹¹, H. Pirumov¹⁴, D. Pitzl¹¹, R. Plačakytė¹², B. Pokorny³², R. Polifka³², B. Povh¹³, V. Radescu¹⁴, N. Raicevic³⁰, T. Ravdandorj³⁵, P. Reimer³¹, E. Rizvi¹⁹, P. Robmann⁴¹, R. Roosen⁴, A. Rostovtsev²⁴, M. Rotaru⁵, J.E. Ruiz Tabasco²², S. Rusakov²⁵, D. Šálek³², D.P.C. Sankey⁶, M. Sauter¹⁴, E. Sauvan²¹, S. Schmitt¹¹, L. Schoeffel¹⁰, A. Schöning¹⁴, H.-C. Schultz-Coulon¹⁵, F. Sefkow¹¹, L.N. Shtarkov²⁵, S. Shushkevich²⁶, T. Sloan¹⁷, I. Smiljanic², Y. Soloviev²⁵, P. Sopicki⁷, D. South¹¹, V. Spaskov⁹, A. Specka²⁸, Z. Staykova¹¹, M. Steder¹¹, B. Stella³³, G. Stoicea⁵, U. Straumann⁴¹, T. Sykora³²^,4, P.D. Thompson³, T. Toll¹¹, T.H. Tran²⁷, D. Traynor¹⁹, P. Truöl⁴¹, I. Tsakov³⁴, B. Tseepeldorj³⁵, J. Turnau⁷, K. Urban¹⁵, A. Valkárová³², C. Vallée²¹, P. Mechelen⁴, Y. Vazdik²⁵, D. Wegener⁸, E. Wünsch¹¹, J. Žáček³², J. Zálešák³¹, Z. Zhang²⁷, A. Zhokin²⁴, H. Zohrabyan³⁸ and F. Zomer²⁷

¹ I. Physikalisches Institut der RWTH, Aachen, Germany
² Vinca Institute of Nuclear Sciences, University of Belgrade, 1100, Belgrade, Serbia
³ School of Physics and Astronomy, University of Birmingham, Birmingham, UK
⁴ Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerpen, Belgium
⁵ National Institute for Physics and Nuclear Engineering (NIPNE), Bucharest, Romania
⁶ Rutherford Appleton Laboratory, Chilton, Didcot, UK
⁷ Institute for Nuclear Physics, Cracow, Poland
⁸ Institut für Physik, TU Dortmund, Dortmund, Germany
⁹ Joint Institute for Nuclear Research, Dubna, Russia
¹⁰ CEA, DSM/Irfu, CE-Saclay, Gif-sur-Yvette, France
¹¹ DESY, Hamburg, Germany
¹² Institut für Experimentalphysik, Universität Hamburg, Hamburg, Germany
¹³ Max-Planck-Institut für Kernphysik, Heidelberg, Germany
¹⁴ Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany
¹⁵ Kirchhoff-Institut für Physik, Universität Heidelberg, Heidelberg, Germany
¹⁶ Institute of Experimental Physics, Slovak Academy of Sciences, Košice, Slovak Republic
¹⁷ Department of Physics, University of Lancaster, Lancaster, UK
¹⁸ Department of Physics, University of Liverpool, Liverpool, UK
¹⁹ Queen Mary and Westfield College, London, UK
²⁰ Physics Department, University of Lund, Lund, Sweden
²¹ CPPM, Aix-Marseille Université, CNRS/IN2P3, 13288, Marseille, France
²² Departamento de Fisica Aplicada, CINVESTAV, Mérida, Yucatán, México
²³ Departamento de Fisica, CINVESTAV IPN, México City, México
²⁴ Institute for Theoretical and Experimental Physics, Moscow, Russia
²⁵ Lebedev Physical Institute, Moscow, Russia
²⁶ Max-Planck-Institut für Physik, München, Germany
²⁷ LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
²⁸ LLR, Ecole Polytechnique, CNRS/IN2P3, Palaiseau, France
²⁹ LPNHE, Université Pierre et Marie Curie Paris 6, Université Denis Diderot Paris 7, CNRS/IN2P3, Paris, France
³⁰ Faculty of Science, University of Montenegro, Podgorica, Montenegro
³¹ Institute of Physics, Academy of Sciences of the Czech Republic, Praha, Czech Republic
³² Faculty of Mathematics and Physics, Charles University, Praha, Czech Republic
³³ Dipartimento di Fisica Università di Roma Tre and INFN Roma 3, Roma, Italy
³⁴ Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria
³⁵ Institute of Physics and Technology of the Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
³⁶ Paul Scherrer Institut, Villigen, Switzerland
³⁷ Fachbereich C, Universität Wuppertal, Wuppertal, Germany
³⁸ Yerevan Physics Institute, Yerevan, Armenia
³⁹ DESY, Zeuthen, Germany
⁴⁰ Institut für Teilchenphysik, ETH, Zürich, Switzerland
⁴¹ Physik-Institut der Universität Zürich, Zürich, Switzerland

^* e-mail: kruegerk@mail.desy.de

Received: 6 June 2011
Revised: 31 August 2011
Published online: 12 October 2011

Abstract

Inclusive production of D ^∗ mesons in deep-inelastic ep scattering at HERA is studied in the range 5<Q ²<100 GeV² of the photon virtuality and 0.02<y<0.7 of the inelasticity of the scattering process. The observed phase space for the D ^∗ meson is p _T(D ^∗)>1.25 GeV and |η(D ^∗)|<1.8. The data sample corresponds to an integrated luminosity of 348 pb⁻¹ collected with the H1 detector. Single and double differential cross sections are measured and the charm contribution ${F_{2}^{c\bar{c}}}$ to the proton structure function F ₂ is determined. The results are compared to perturbative QCD predictions at next-to-leading order implementing different schemes for the charm mass treatment and with Monte Carlo models based on leading order matrix elements with parton showers.