Measurement of D meson production and F2 in deep-inelastic scattering at HERA
C. AdloffFachbereich Physik, Bergische Universität Gesamthochschule Wuppertal, Wuppertal, Germany 8V. AndreevLebedev Physical Institute, Moscow, Russia 12 15B. AndrieuÉcole Polytechnique, Palaiseau, FranceT. AnthonisInter-University Institute for High Energies ULB-VUB, Brussels, Universitaire Instelling Antwerpen, Wilrijk, Belgium 10V. ArkadovA. AstvatsatourovA. BabaevInstitute for Theoretical and Experimental Physics, Moscow, RussiaJ. BährP. BaranovLebedev Physical Institute, Moscow, Russia 12 15E. BarreletCentre National de la Recherche Scientifique, Paris, FranceW. BartelPete S. BatePhysics Department, University of Manchester, Manchester, UK 9A. BeglarianYerevan Physics Institute, Yerevan, ArmeniaO. BehnkePhysikalisches Institut, Universität Heidelberg, Heidelberg, Germany 8C. BeierKirchhoff-Institut für Physik, Universität Heidelberg, Heidelberg, Germany 8A. BelousovLebedev Physical Institute, Moscow, Russia 12 15T. BenischCh. BergerI. Physikalisches Institut der RWTH, Aachen, Germany 8T. BerndtKirchhoff-Institut für Physik, Universität Heidelberg, Heidelberg, Germany 8J.C. BizotUniversité Paris Cité, Paris, FranceV. BoudryLPNHE, Ecole Polytechnique, IN2P3-CNRS, Palaiseau, FranceW. BraunschweigI. Physikalisches Institut der RWTH, Aachen, Germany 8V. BrissonUniversité Paris Cité, Paris, FranceH.-B. BrökerIII. Physikalisches Institut der RWTH, Aachen, Germany 8Dunstan BrownW. BrücknerMax Planck Society, Munich, GermanyD. BrunckoSlovak Academy of Sciences, Bratislava, SlovakiaJ. BürgerUniversité Paris CitéF.W. BüsserII. Institut für Experimentalphysik, Universität Hamburg, Hamburg, Germany 8A. BunyatyanMax Planck Institute for Nuclear PhysicsA. BurrageDepartment of Physics, University of Liverpool, Liverpool, UK 9G. BuschhornMax Planck Institute for PhysicsA. CampbellJun CaoInstitut National de Physique Nucléaire et de Physique des ParticulesT. CarliMax Planck Institute of PsychiatryS. CaronI. Physikalisches Institut der RWTH, Aachen, Germany 8D. ClarkeRutherford Appleton Laboratory, Chilton, Didcot, UK 9B. ClerbauxLAL, Université de Paris-Sud, IN2P3-CNRS, Orsay, FranceC. CollardInter-University Institute for High Energies ULB-VUB, Brussels, Universitaire Instelling Antwerpen, Wilrijk, Belgium 10J.G. ContrerasInstitut für Physik, Universität Dortmund, Dortmund, Germany 8Y.R. CoppensSchool of Physics and Space Research, University of Birmingham, Birmingham, UKJ. A. CoughlanRutherford Appleton Laboratory, Chilton, Didcot, UK 9M.-C. CousinouCPPM, CNRS/IN2P3, Univ. Mediterranee, Marseille, FranceB. E. CoxPhysics Department, University of Manchester, Manchester, UK 9G. CozzikaCEA, DSM/DAPNIA, CE-Saclay, Gif-sur-Yvette, FranceJ. CvachInstitute of Physics, Academy of Sciences of the Czech Republic, Praha, Czech Republic 12 16J.B. DaintonDepartment of Physics, University of Liverpool, Liverpool, UK 9W.D. DauInstitut für experimentelle und Angewandte Physik, Universität Kiel, Kiel, Germany 8K. DaumFachbereich Physik, Bergische Universität Gesamthochschule Wuppertal, Wuppertal, Germany 8Marcus DavidssonPhysics Department, University of Lund, Lund, Sweden 14B. DelcourtUniversité Paris CitéNicolas DelerueCentre National de la Recherche Scientifique, Paris, FranceR. DemirchyanYerevan Physics Institute, Yerevan, ArmeniaA. De RoeckDESY, Hamburg, GermanyE.A. De WolfInter-University Institute for High Energies ULB-VUB, Brussels, Universitaire Instelling Antwerpen, Wilrijk, Belgium 10C. DiaconuCPPM, CNRS/IN2P3, Univ. Mediterranee, Marseille, FranceJ. DingfelderPhysikalisches Institut, Universität Heidelberg, Heidelberg, Germany 8P. DixonQueen Mary and Westfield College, London, UK 9V. DodonovMax Planck Society, Munich, GermanyJ.D. DowellSchool of Physics and Space Research, University of Birmingham, Birmingham, UK 9A. DroutskoiInstitute for Theoretical and Experimental Physics, Moscow, RussiaA. DubakMax Planck Society, Munich, GermanyC. DuprelIII. Physikalisches Institut der RWTH, Aachen, Germany 8G. EckerlinV. EfremenkoInstitute for Theoretical and Experimental Physics, Moscow, RussiaS. EgliPaul Scherrer Institut, Villigen, SwitzerlandR. EichlerInstitut für Teilchenphysik, ETH, Zürich, Switzerland 17F. EiselePhysikalisches Institut, Universität Heidelberg, Heidelberg, Germany 8E. EisenhandlerQueen Mary and Westfield College, London, UK 9M. EllerbrockPhysikalisches Institut, Universität Heidelberg, Heidelberg, Germany 8E. ElsenM. ErdmannDESY, Hamburg, GermanyPeter FaulknerSchool of Physics and Space Research, University of Birmingham, Birmingham, UKL. FavartInter-University Institute for High Energies ULB-VUB, Brussels, Universitaire Instelling Antwerpen, Wilrijk, Belgium 10A. FedotovInstitute for Theoretical and Experimental Physics, Moscow, RussiaR. FelstJ. FerenceiLAL, Université de Paris-Sud, IN2P3-CNRS, Orsay, FranceS. FerronLPNHE, Ecole Polytechnique, IN2P3-CNRS, Palaiseau, FranceM. FleischerY.H. FlemingSchool of Physics and Space Research, University of Birmingham, Birmingham, UK 9G. FlüggeIII. Physikalisches Institut der RWTH, Aachen, Germany 8A. FomenkoLebedev Physical Institute, Moscow, Russia 12 15I. ForestiPhysik-Institut der Universität Zürich, Zürich, Switzerland 17J. FormánekFaculty of Mathematics and Physics, Charles University, Praha, Czech Republic 12 16J.M. FosterPhysics Department, University of Manchester, Manchester, UK 9G. FrankeE. GabathulerDepartment of Physics, University of Liverpool, Liverpool, UK 9K. GabathulerPaul Scherrer Institut, Villigen, SwitzerlandJ. GarveyUniversité Paris CitéJ. GassnerInstitut National de Physique Nucléaire et de Physique des ParticulesJ. GaylerDESY, Hamburg, GermanyR. GerhardsC. GerlichPhysikalisches Institut, Universität Heidelberg, Heidelberg, Germany 8S. GhazaryanInter-University Institute for High Energies ULB-VUB, Brussels, Universitaire Instelling Antwerpen, Wilrijk, Belgium 10L. GoerlichInstitute for Nuclear Physics, Cracow, Poland 11N. GogitidzeLebedev Physical Institute, Moscow, Russia 12 15M. GoldbergInstitut National de Physique Nucléaire et de Physique des ParticulesChristopher J. GoodwinUniversité Paris Cité
2002en
ABI
Annotatsiya
The inclusive production of D ∗± (2010) mesons in deep-inelastic scattering is studied with the H1 detector at HERA. In the kinematic region 1< Q 2 <100 GeV 2 and 0.05< y <0.7 an e + p cross section for inclusive D ∗± meson production of 8.50±0.42(stat.) +1.21 −1.00 (syst.) nb is measured in the visible range p tD ∗ >1.5 GeV and |η D ∗ |<1.5 . Single and double differential inclusive D ∗± meson cross sections are compared to perturbative QCD calculations in two different evolution schemes. The charm contribution to the proton structure, F 2 c ( x , Q 2 ), is determined by extrapolating the visible charm cross section to the full phase space. This contribution is found to rise from about 10% at Q 2 =1.5 GeV 2 to more than 25% at Q 2 =60 GeV 2 corresponding to x values ranging from 5×10 −5 to 3×10 −3 .
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