On the rise of the proton structure function F2 towards low x
C. AdloffFachbereich Physik, Bergische Universität Gesamthochschule Wuppertal, Wuppertal, GermanyV. 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. ArkadovDESY, Zeuthen, GermanyA. AstvatsatourovDESY, Zeuthen, GermanyA. BabaevInstitute for Theoretical and Experimental Physics, Moscow, Russia 19J. BährDESY, Zeuthen, GermanyP. BaranovLebedev Physical Institute, Moscow, Russia 12 15E. BarreletCentre National de la Recherche Scientifique, Paris, FranceW. BartelPete S. BatePhysics Department, University of Manchester, Manchester, UK 9J. BeckerPhysik-Institut der Universität Zürich, Zürich, Switzerland 17A. 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. BizotInstitut National de Physique Nucléaire et de Physique des ParticulesJ. BoehmeUniversité Paris Cité, Paris, FranceV. BoudryLaboratoire de Physique Nucléaire et de Hautes ÉnergiesW. BraunschweigI. Physikalisches Institut der RWTH, Aachen, Germany 8V. BrissonInstitut National de Physique Nucléaire et de Physique des ParticulesH.-B. BrökerIII. Physikalisches Institut der RWTH, Aachen, Germany 8D.P. BrownW. BrücknerMax-Planck-Institut für Kernphysik, Heidelberg, GermanyD. BrunckoSlovak Academy of Sciences, Bratislava, SlovakiaJ. BürgerF.W. BüsserII. Institut für Experimentalphysik, Universität Hamburg, Hamburg, Germany 8A. BunyatyanMax Planck Society, Munich, GermanyA. BurrageDepartment of Physics, University of Liverpool, Liverpool, UK 9G. BuschhornMax Planck Society, Munich, GermanyL. BystritskayaInstitute for Theoretical and Experimental Physics, Moscow, Russia 19A.J. CampbellJun CaoUniversité Paris CitéS. CaronI. Physikalisches Institut der RWTH, Aachen, Germany 8F. Cassol-BrunnerCentre National de la Recherche Scientifique, Paris, FranceD. ClarkeRutherford Appleton Laboratory, Chilton, Didcot, UK 9B. ClerbauxInter-University Institute for High Energies ULB-VUB, Brussels; Universitaire Instelling Antwerpen, Wilrijk; Belgium 10C. 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, UK 9J. A. CoughlanRutherford Appleton Laboratory, Chilton, Didcot, UK 9M.-C. CousinouCentre National de la Recherche Scientifique, Paris, FranceB. E. CoxPhysics Department, University of Manchester, Manchester, UK 9G. CozzikaDSM (Netherlands), Heerlen, NetherlandsJ. CvachCzech Academy of Sciences, Prague, CzechiaJ.B. DaintonDepartment of Physics, University of Liverpool, Liverpool, UK 9W.D. DauInstitut für experimentelle und Angewandte Physik, Universität Kiel, Kiel, GermanyK. DaumFachbereich Physik, Bergische Universität Gesamthochschule Wuppertal, Wuppertal, GermanyMarcus DavidssonPhysics Department, University of Lund, Lund, Sweden 14B. DelcourtUniversité Paris CitéNicolas DelerueCPPM, CNRS/IN2P3, Univ. Mediterranee, Marseille, 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 Institute for Nuclear PhysicsJ.D. DowellUniversity of Birmingham, Birmingham, United KingdomA. DroutskoiInstitute for Theoretical and Experimental Physics, Moscow, Russia 19A. DubakMax Planck Institute for PhysicsC. DuprelIII. Physikalisches Institut der RWTH, Aachen, Germany 8G. EckerlinV. EfremenkoInstitute for Theoretical and Experimental Physics, Moscow, Russia 19S. 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. ElsenDESY, Hamburg, GermanyM. ErdmannDESY, Hamburg, GermanyPeter FaulknerSchool of Physics and Space Research, University of Birmingham, Birmingham, UK 9L. FavartInstitute for Nuclear Physics, Cracow, PolandA. FedotovInstitute for Nuclear Physics, Cracow, PolandR. FelstDESY, Hamburg, GermanyJ. FerenceiDESY, Hamburg, GermanyS. FerronÉcole Polytechnique, Palaiseau, FranceM. FleischerDESY, Hamburg, GermanyY.H. FlemingUniversity of Birmingham, Birmingham, United KingdomG. 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 16G. FrankeDESY, Hamburg, GermanyE. GabathulerDepartment of Physics, University of Liverpool, Liverpool, UK 9K. GabathulerInstitute for Nuclear Physics, Cracow, PolandJ. GarveySchool of Physics and Space Research, University of Birmingham, Birmingham, UK 9J. GassnerPaul Scherrer Institut, Villigen, SwitzerlandJ. GaylerDESY, Hamburg, GermanyR. GerhardsDESY, Hamburg, GermanyC. GerlichPhysikalisches Institut, Universität Heidelberg, Heidelberg, Germany 8S. GhazaryanYerevan Physics Institute, Yerevan, ArmeniaL. GoerlichInstitute for Nuclear Physics, Cracow, PolandN. GogitidzeLebedev Physical Institute, Moscow, Russia 12 15
2001en
ABI
Аннотация
A measurement of the derivative ( ∂ ln F 2 / ∂ ln x ) Q 2 ≡− λ ( x , Q 2 ) of the proton structure function F 2 is presented in the low x domain of deeply inelastic positron–proton scattering. For 5×10 −5 ⩽ x ⩽0.01 and Q 2 ⩾1.5 GeV 2 , λ ( x , Q 2 ) is found to be independent of x and to increase linearly with ln Q 2 .
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