European Physical Journal C: Particles and Fields (Sep 2009)
Measurement of the inclusive ep scattering cross section at low Q2 and x at HERA
- The H1 Collaboration,
- F. D. Aaron,
- C. Alexa,
- V. Andreev,
- B. Antunovic,
- S. Aplin,
- A. Asmone,
- A. Astvatsatourov,
- S. Backovic,
- A. Baghdasaryan,
- E. Barrelet,
- W. Bartel,
- K. Begzsuren,
- O. Behnke,
- O. Behrendt,
- A. Belousov,
- J. C. Bizot,
- V. Boudry,
- I. Bozovic-Jelisavcic,
- J. Bracinik,
- G. Brandt,
- M. Brinkmann,
- V. Brisson,
- D. Bruncko,
- A. Bunyatyan,
- G. Buschhorn,
- L. Bystritskaya,
- A. J. Campbell,
- K. B. Cantun Avila,
- F. Cassol-Brunner,
- K. Cerny,
- V. Cerny,
- V. Chekelian,
- A. Cholewa,
- J. G. Contreras,
- J. A. Coughlan,
- G. Cozzika,
- J. Cvach,
- J. B. Dainton,
- K. Daum,
- M. Deák,
- Y. de Boer,
- B. Delcourt,
- M. Del Degan,
- J. Delvax,
- A. De Roeck,
- E. A. De Wolf,
- C. Diaconu,
- V. Dodonov,
- A. Dossanov,
- A. Dubak,
- G. Eckerlin,
- D. Eckstein,
- V. Efremenko,
- S. Egli,
- A. Eliseev,
- E. Elsen,
- A. Falkiewicz,
- P. J. W. Faulkner,
- 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,
- I. Glushkov,
- L. Goerlich,
- N. Gogitidze,
- M. Gouzevitch,
- C. Grab,
- T. Greenshaw,
- B. R. Grell,
- G. Grindhammer,
- S. Habib,
- D. Haidt,
- M. Hansson,
- 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,
- M. Jacquet,
- M. E. Janssen,
- X. Janssen,
- V. Jemanov,
- L. Jönsson,
- A. W. Jung,
- H. Jung,
- M. Kapichine,
- J. Katzy,
- I. R. Kenyon,
- C. Kiesling,
- M. Klein,
- C. Kleinwort,
- T. Kluge,
- A. Knutsson,
- R. Kogler,
- V. Korbel,
- P. Kostka,
- M. Kraemer,
- K. Krastev,
- J. Kretzschmar,
- A. Kropivnitskaya,
- K. Krüger,
- K. Kutak,
- M. P. J. Landon,
- W. Lange,
- G. Laštovička-Medin,
- P. Laycock,
- T. Laštovička,
- A. Lebedev,
- G. Leibenguth,
- V. Lendermann,
- S. Levonian,
- G. Li,
- K. Lipka,
- A. Liptaj,
- B. List,
- J. List,
- E. Lobodzinska,
- N. Loktionova,
- R. Lopez-Fernandez,
- V. Lubimov,
- L. Lytkin,
- A. Makankine,
- E. Malinovski,
- P. Marage,
- Ll. Marti,
- H.-U. Martyn,
- S. J. Maxfield,
- A. Mehta,
- K. Meier,
- A. B. Meyer,
- H. Meyer,
- H. Meyer,
- J. Meyer,
- V. Michels,
- S. Mikocki,
- I. Milcewicz-Mika,
- F. Moreau,
- A. Morozov,
- J. V. Morris,
- M. U. Mozer,
- M. Mudrinic,
- K. Müller,
- P. Murín,
- B. Naroska,
- Th. Naumann,
- P. R. Newman,
- C. Niebuhr,
- A. Nikiforov,
- G. Nowak,
- K. Nowak,
- M. Nozicka,
- B. Olivier,
- J. E. Olsson,
- S. Osman,
- D. Ozerov,
- V. Palichik,
- I. Panagoulias,
- M. Pandurovic,
- Th. Papadopoulou,
- C. Pascaud,
- G. D. Patel,
- O. Pejchal,
- E. Perez,
- A. Petrukhin,
- I. Picuric,
- S. Piec,
- D. Pitzl,
- R. Plačakytė,
- R. Polifka,
- B. Povh,
- T. Preda,
- V. Radescu,
- A. J. Rahmat,
- N. Raicevic,
- A. Raspiareza,
- T. Ravdandorj,
- P. Reimer,
- E. Rizvi,
- P. Robmann,
- B. Roland,
- R. Roosen,
- A. Rostovtsev,
- M. Rotaru,
- J. E. Ruiz Tabasco,
- Z. Rurikova,
- S. Rusakov,
- D. Šálek,
- D. P. C. Sankey,
- M. Sauter,
- E. Sauvan,
- S. Schmitt,
- C. Schmitz,
- L. Schoeffel,
- A. Schöning,
- H.-C. Schultz-Coulon,
- F. Sefkow,
- R. N. Shaw-West,
- I. Sheviakov,
- 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,
- D. Sunar,
- T. Sykora,
- V. Tchoulakov,
- G. Thompson,
- P. D. Thompson,
- T. Toll,
- F. Tomasz,
- T. H. Tran,
- D. Traynor,
- T. N. Trinh,
- P. Truöl,
- I. Tsakov,
- B. Tseepeldorj,
- J. Turnau,
- K. Urban,
- A. Valkárová,
- C. Vallée,
- P. Van Mechelen,
- A. Vargas Trevino,
- Y. Vazdik,
- S. Vinokurova,
- V. Volchinski,
- M. von den Driesch,
- D. Wegener,
- Ch. Wissing,
- E. Wünsch,
- J. Žáček,
- J. Zálešák,
- Z. Zhang,
- A. Zhokin,
- T. Zimmermann,
- H. Zohrabyan,
- F. Zomer
Affiliations
- The H1 Collaboration
- F. D. Aaron
- National Institute for Physics and Nuclear Engineering (NIPNE)
- C. Alexa
- National Institute for Physics and Nuclear Engineering (NIPNE)
- V. Andreev
- Lebedev Physical Institute
- B. Antunovic
- DESY
- S. Aplin
- DESY
- A. Asmone
- Dipartimento di Fisica, Università di Roma Tre and INFN Roma 3
- A. Astvatsatourov
- Inter-University Institute for High Energies ULB-VUB
- S. Backovic
- Faculty of Science, University of Montenegro
- A. Baghdasaryan
- Yerevan Physics Institute
- E. Barrelet
- LPNHE, Universités Paris VI and VII, IN2P3-CNRS
- W. Bartel
- DESY
- K. Begzsuren
- Institute of Physics and Technology of the Mongolian Academy of Sciences
- O. Behnke
- Physikalisches Institut, Universität Heidelberg
- O. Behrendt
- Institut für Physik, TU Dortmund
- A. Belousov
- Lebedev Physical Institute
- J. C. Bizot
- LAL, Univ Paris-Sud, CNRS/IN2P3
- V. Boudry
- LLR, Ecole Polytechnique, IN2P3-CNRS
- I. Bozovic-Jelisavcic
- Vinca Institute of Nuclear Sciences
- J. Bracinik
- School of Physics and Astronomy, University of Birmingham
- G. Brandt
- DESY
- M. Brinkmann
- DESY
- V. Brisson
- LAL, Univ Paris-Sud, CNRS/IN2P3
- D. Bruncko
- Institute of Experimental Physics, Slovak Academy of Sciences
- A. Bunyatyan
- Max-Planck-Institut für Kernphysik
- G. Buschhorn
- Max-Planck-Institut für Physik
- L. Bystritskaya
- Institute for Theoretical and Experimental Physics
- A. J. Campbell
- DESY
- K. B. Cantun Avila
- Departamento de Fisica Aplicada, CINVESTAV
- F. Cassol-Brunner
- CPPM, CNRS/IN2P3, Univ. Mediterranee
- K. Cerny
- Faculty of Mathematics and Physics, Charles University
- V. Cerny
- Institute of Experimental Physics, Slovak Academy of Sciences
- V. Chekelian
- Max-Planck-Institut für Physik
- A. Cholewa
- DESY
- J. G. Contreras
- Departamento de Fisica Aplicada, CINVESTAV
- J. A. Coughlan
- Rutherford Appleton Laboratory
- G. Cozzika
- CEA, DSM/Irfu, CE-Saclay
- J. Cvach
- Institute of Physics, Academy of Sciences of the Czech Republic
- J. B. Dainton
- Department of Physics, University of Liverpool
- K. Daum
- Fachbereich C, Universität Wuppertal
- M. Deák
- DESY
- Y. de Boer
- DESY
- B. Delcourt
- LAL, Univ Paris-Sud, CNRS/IN2P3
- M. Del Degan
- Institut für Teilchenphysik, ETH
- J. Delvax
- Inter-University Institute for High Energies ULB-VUB
- A. De Roeck
- DESY
- E. A. De Wolf
- Inter-University Institute for High Energies ULB-VUB
- C. Diaconu
- CPPM, CNRS/IN2P3, Univ. Mediterranee
- V. Dodonov
- Max-Planck-Institut für Kernphysik
- A. Dossanov
- Max-Planck-Institut für Physik
- A. Dubak
- Faculty of Science, University of Montenegro
- G. Eckerlin
- DESY
- D. Eckstein
- DESY
- V. Efremenko
- Institute for Theoretical and Experimental Physics
- S. Egli
- Paul Scherrer Institut
- A. Eliseev
- Lebedev Physical Institute
- E. Elsen
- DESY
- A. Falkiewicz
- Institute for Nuclear Physics
- P. J. W. Faulkner
- School of Physics and Astronomy, University of Birmingham
- L. Favart
- Inter-University Institute for High Energies ULB-VUB
- A. Fedotov
- Institute for Theoretical and Experimental Physics
- R. Felst
- DESY
- J. Feltesse
- CEA, DSM/Irfu, CE-Saclay
- J. Ferencei
- Institute of Experimental Physics, Slovak Academy of Sciences
- D.-J. Fischer
- DESY
- M. Fleischer
- DESY
- A. Fomenko
- Lebedev Physical Institute
- E. Gabathuler
- Department of Physics, University of Liverpool
- J. Gayler
- DESY
- S. Ghazaryan
- Yerevan Physics Institute
- A. Glazov
- DESY
- I. Glushkov
- DESY
- L. Goerlich
- Institute for Nuclear Physics
- N. Gogitidze
- Lebedev Physical Institute
- M. Gouzevitch
- LLR, Ecole Polytechnique, IN2P3-CNRS
- C. Grab
- Institut für Teilchenphysik, ETH
- T. Greenshaw
- Department of Physics, University of Liverpool
- B. R. Grell
- DESY
- G. Grindhammer
- Max-Planck-Institut für Physik
- S. Habib
- Institut für Experimentalphysik, Universität Hamburg
- D. Haidt
- DESY
- M. Hansson
- Physics Department, University of Lund
- C. Helebrant
- DESY
- R. C. W. Henderson
- Department of Physics, University of Lancaster
- E. Hennekemper
- Kirchhoff-Institut für Physik, Universität Heidelberg
- H. Henschel
- DESY
- M. Herbst
- Kirchhoff-Institut für Physik, Universität Heidelberg
- G. Herrera
- Departamento de Fisica, CINVESTAV
- M. Hildebrandt
- Paul Scherrer Institut
- K. H. Hiller
- DESY
- D. Hoffmann
- CPPM, CNRS/IN2P3, Univ. Mediterranee
- R. Horisberger
- Paul Scherrer Institut
- T. Hreus
- Inter-University Institute for High Energies ULB-VUB
- M. Jacquet
- LAL, Univ Paris-Sud, CNRS/IN2P3
- M. E. Janssen
- DESY
- X. Janssen
- Inter-University Institute for High Energies ULB-VUB
- V. Jemanov
- Institut für Experimentalphysik, Universität Hamburg
- L. Jönsson
- Physics Department, University of Lund
- A. W. Jung
- Kirchhoff-Institut für Physik, Universität Heidelberg
- H. Jung
- DESY
- M. Kapichine
- Joint Institute for Nuclear Research
- J. Katzy
- DESY
- I. R. Kenyon
- School of Physics and Astronomy, University of Birmingham
- C. Kiesling
- Max-Planck-Institut für Physik
- M. Klein
- Department of Physics, University of Liverpool
- C. Kleinwort
- DESY
- T. Kluge
- Department of Physics, University of Liverpool
- A. Knutsson
- DESY
- R. Kogler
- Max-Planck-Institut für Physik
- V. Korbel
- DESY
- P. Kostka
- DESY
- M. Kraemer
- DESY
- K. Krastev
- DESY
- J. Kretzschmar
- Department of Physics, University of Liverpool
- A. Kropivnitskaya
- Institute for Theoretical and Experimental Physics
- K. Krüger
- Kirchhoff-Institut für Physik, Universität Heidelberg
- K. Kutak
- DESY
- M. P. J. Landon
- Queen Mary and Westfield College
- W. Lange
- DESY
- G. Laštovička-Medin
- Faculty of Science, University of Montenegro
- P. Laycock
- Department of Physics, University of Liverpool
- T. Laštovička
- DESY
- A. Lebedev
- Lebedev Physical Institute
- G. Leibenguth
- Institut für Teilchenphysik, ETH
- V. Lendermann
- Kirchhoff-Institut für Physik, Universität Heidelberg
- S. Levonian
- DESY
- G. Li
- LAL, Univ Paris-Sud, CNRS/IN2P3
- K. Lipka
- Institut für Experimentalphysik, Universität Hamburg
- A. Liptaj
- Max-Planck-Institut für Physik
- B. List
- Institut für Experimentalphysik, Universität Hamburg
- J. List
- DESY
- E. Lobodzinska
- DESY
- N. Loktionova
- Lebedev Physical Institute
- R. Lopez-Fernandez
- Departamento de Fisica, CINVESTAV
- V. Lubimov
- Institute for Theoretical and Experimental Physics
- L. Lytkin
- Max-Planck-Institut für Kernphysik
- A. Makankine
- Joint Institute for Nuclear Research
- E. Malinovski
- Lebedev Physical Institute
- P. Marage
- Inter-University Institute for High Energies ULB-VUB
- Ll. Marti
- DESY
- H.-U. Martyn
- I. Physikalisches Institut der RWTH
- S. J. Maxfield
- Department of Physics, University of Liverpool
- A. Mehta
- Department of Physics, University of Liverpool
- K. Meier
- Kirchhoff-Institut für Physik, Universität Heidelberg
- A. B. Meyer
- DESY
- H. Meyer
- DESY
- H. Meyer
- Fachbereich C, Universität Wuppertal
- J. Meyer
- DESY
- V. Michels
- DESY
- S. Mikocki
- Institute for Nuclear Physics
- I. Milcewicz-Mika
- Institute for Nuclear Physics
- F. Moreau
- LLR, Ecole Polytechnique, IN2P3-CNRS
- A. Morozov
- Joint Institute for Nuclear Research
- J. V. Morris
- Rutherford Appleton Laboratory
- M. U. Mozer
- Inter-University Institute for High Energies ULB-VUB
- M. Mudrinic
- Vinca Institute of Nuclear Sciences
- K. Müller
- Physik-Institut der Universität Zürich
- P. Murín
- Institute of Experimental Physics, Slovak Academy of Sciences
- B. Naroska
- Institut für Experimentalphysik, Universität Hamburg
- Th. Naumann
- DESY
- P. R. Newman
- School of Physics and Astronomy, University of Birmingham
- C. Niebuhr
- DESY
- A. Nikiforov
- DESY
- G. Nowak
- Institute for Nuclear Physics
- K. Nowak
- Physik-Institut der Universität Zürich
- M. Nozicka
- DESY
- B. Olivier
- Max-Planck-Institut für Physik
- J. E. Olsson
- DESY
- S. Osman
- Physics Department, University of Lund
- D. Ozerov
- Institute for Theoretical and Experimental Physics
- V. Palichik
- Joint Institute for Nuclear Research
- I. Panagoulias
- DESY
- M. Pandurovic
- Vinca Institute of Nuclear Sciences
- Th. Papadopoulou
- DESY
- C. Pascaud
- LAL, Univ Paris-Sud, CNRS/IN2P3
- G. D. Patel
- Department of Physics, University of Liverpool
- O. Pejchal
- Faculty of Mathematics and Physics, Charles University
- E. Perez
- CEA, DSM/Irfu, CE-Saclay
- A. Petrukhin
- Institute for Theoretical and Experimental Physics
- I. Picuric
- Faculty of Science, University of Montenegro
- S. Piec
- DESY
- D. Pitzl
- DESY
- R. Plačakytė
- DESY
- R. Polifka
- Faculty of Mathematics and Physics, Charles University
- B. Povh
- Max-Planck-Institut für Kernphysik
- T. Preda
- National Institute for Physics and Nuclear Engineering (NIPNE)
- V. Radescu
- DESY
- A. J. Rahmat
- Department of Physics, University of Liverpool
- N. Raicevic
- Faculty of Science, University of Montenegro
- A. Raspiareza
- Max-Planck-Institut für Physik
- T. Ravdandorj
- Institute of Physics and Technology of the Mongolian Academy of Sciences
- P. Reimer
- Institute of Physics, Academy of Sciences of the Czech Republic
- E. Rizvi
- Queen Mary and Westfield College
- P. Robmann
- Physik-Institut der Universität Zürich
- B. Roland
- Inter-University Institute for High Energies ULB-VUB
- R. Roosen
- Inter-University Institute for High Energies ULB-VUB
- A. Rostovtsev
- Institute for Theoretical and Experimental Physics
- M. Rotaru
- National Institute for Physics and Nuclear Engineering (NIPNE)
- J. E. Ruiz Tabasco
- Departamento de Fisica Aplicada, CINVESTAV
- Z. Rurikova
- DESY
- S. Rusakov
- Lebedev Physical Institute
- D. Šálek
- Faculty of Mathematics and Physics, Charles University
- D. P. C. Sankey
- Rutherford Appleton Laboratory
- M. Sauter
- Institut für Teilchenphysik, ETH
- E. Sauvan
- CPPM, CNRS/IN2P3, Univ. Mediterranee
- S. Schmitt
- DESY
- C. Schmitz
- Physik-Institut der Universität Zürich
- L. Schoeffel
- CEA, DSM/Irfu, CE-Saclay
- A. Schöning
- DESY
- H.-C. Schultz-Coulon
- Kirchhoff-Institut für Physik, Universität Heidelberg
- F. Sefkow
- DESY
- R. N. Shaw-West
- School of Physics and Astronomy, University of Birmingham
- I. Sheviakov
- Lebedev Physical Institute
- L. N. Shtarkov
- Lebedev Physical Institute
- S. Shushkevich
- Max-Planck-Institut für Physik
- T. Sloan
- Department of Physics, University of Lancaster
- I. Smiljanic
- Vinca Institute of Nuclear Sciences
- Y. Soloviev
- Lebedev Physical Institute
- P. Sopicki
- Institute for Nuclear Physics
- D. South
- Institut für Physik, TU Dortmund
- V. Spaskov
- Joint Institute for Nuclear Research
- A. Specka
- LLR, Ecole Polytechnique, IN2P3-CNRS
- Z. Staykova
- DESY
- M. Steder
- DESY
- B. Stella
- Dipartimento di Fisica, Università di Roma Tre and INFN Roma 3
- G. Stoicea
- National Institute for Physics and Nuclear Engineering (NIPNE)
- U. Straumann
- Physik-Institut der Universität Zürich
- D. Sunar
- Inter-University Institute for High Energies ULB-VUB
- T. Sykora
- Inter-University Institute for High Energies ULB-VUB
- V. Tchoulakov
- Joint Institute for Nuclear Research
- G. Thompson
- Queen Mary and Westfield College
- P. D. Thompson
- School of Physics and Astronomy, University of Birmingham
- T. Toll
- DESY
- F. Tomasz
- Institute of Experimental Physics, Slovak Academy of Sciences
- T. H. Tran
- LAL, Univ Paris-Sud, CNRS/IN2P3
- D. Traynor
- Queen Mary and Westfield College
- T. N. Trinh
- CPPM, CNRS/IN2P3, Univ. Mediterranee
- P. Truöl
- Physik-Institut der Universität Zürich
- I. Tsakov
- Institute for Nuclear Research and Nuclear Energy
- B. Tseepeldorj
- Institute of Physics and Technology of the Mongolian Academy of Sciences
- J. Turnau
- Institute for Nuclear Physics
- K. Urban
- Kirchhoff-Institut für Physik, Universität Heidelberg
- A. Valkárová
- Faculty of Mathematics and Physics, Charles University
- C. Vallée
- CPPM, CNRS/IN2P3, Univ. Mediterranee
- P. Van Mechelen
- Inter-University Institute for High Energies ULB-VUB
- A. Vargas Trevino
- DESY
- Y. Vazdik
- Lebedev Physical Institute
- S. Vinokurova
- DESY
- V. Volchinski
- Yerevan Physics Institute
- M. von den Driesch
- DESY
- D. Wegener
- Institut für Physik, TU Dortmund
- Ch. Wissing
- DESY
- E. Wünsch
- DESY
- J. Žáček
- Faculty of Mathematics and Physics, Charles University
- J. Zálešák
- Institute of Physics, Academy of Sciences of the Czech Republic
- Z. Zhang
- LAL, Univ Paris-Sud, CNRS/IN2P3
- A. Zhokin
- Institute for Theoretical and Experimental Physics
- T. Zimmermann
- Institut für Teilchenphysik, ETH
- H. Zohrabyan
- Yerevan Physics Institute
- F. Zomer
- LAL, Univ Paris-Sud, CNRS/IN2P3
- DOI
- https://doi.org/10.1140/epjc/s10052-009-1128-6
- Journal volume & issue
-
Vol. 63,
no. 4
pp. 625 – 678
Abstract
Abstract A measurement of the inclusive ep scattering cross section is presented in the region of low momentum transfers, 0.2 GeV2 ≤Q 2≤12 GeV2, and low Bjorken x, 5⋅10−6≤x≤0.02. The result is based on two data sets collected in dedicated runs by the H1 Collaboration at HERA at beam energies of 27.6 GeV and 920 GeV for positrons and protons, respectively. A combination with data previously published by H1 leads to a cross section measurement of a few percent accuracy. A kinematic reconstruction method exploiting radiative ep events extends the measurement to lower Q 2 and larger x. The data are compared with theoretical models which apply to the transition region from photoproduction to deep inelastic scattering.
Keywords
