Content area
Abstract
A detailed analysis is presented of the diffractive deep-inelastic scattering process ep→eXY, where Y is a proton or a low mass proton excitation carrying a fraction 1-xIP>0.95 of the incident proton longitudinal momentum and the squared four-momentum transfer at the proton vertex satisfies |t|<1 GeV2. Using data taken by the H1 experiment, the cross section is measured for photon virtualities in the range 3.5≤Q2≤1600 GeV2, triple differentially in xIP, Q2 and β=x/xIP, where x is the Bjorken scaling variable. At low xIP, the data are consistent with a factorisable xIP dependence, which can be described by the exchange of an effective pomeron trajectory with intercept αIP(0)=1.118±0.008(exp.)+0.029-0.010(model). Diffractive parton distribution functions and their uncertainties are determined from a next-to-leading order DGLAP QCD analysis of the Q2 and β dependences of the cross section. The resulting gluon distribution carries an integrated fraction of around 70% of the exchanged momentum in the Q2 range studied. Total and differential cross sections are also measured for the diffractive charged current process e+p→ν̄eXY and are found to be well described by predictions based on the diffractive parton distributions. The ratio of the diffractive to the inclusive neutral current ep cross sections is studied. Over most of the kinematic range, this ratio shows no significant dependence on Q2 at fixed xIP and x or on x at fixed Q2 and β.
Details
Title
Measurement and QCD analysis of the diffractive deep-inelastic scattering cross section at HERA
Author
Aktas, A 1 ; Andreev, V 2 ; Anthonis, T 3 ; Antunovic, B 4 ; Aplin, S 1 ; Asmone, A 5 ; Astvatsatourov, A 6 ; Babaev, A 7 ; Backovic, S 8 ; Baghdasaryan, A 9 ; Baranov, P 2 ; Barrelet, E 10 ; Bartel, W 1 ; Baudrand, S 11 ; Baumgartner, S 12 ; Beckingham, M 1 ; Behnke, O 13 ; Behrendt, O 14 ; Belousov, A 2 ; Berger, N 12 ; Bizot, J C 11 ; M-O Boenig 14 ; Boudry, V 15 ; Bracinik, J 4 ; Brandt, G 13 ; Brisson, V 11 ; Bruncko, D 16 ; Büsser, F W 17 ; Bunyatyan, A 18 ; Buschhorn, G 4 ; Bystritskaya, L 7 ; Campbell, A J 1 ; Cassol-Brunner, F 19 ; Cerny, K 20 ; Cerny, V 21 ; Chekelian, V 4 ; Contreras, J G 22 ; Coughlan, JA 23 ; Coppens, Y R 24 ; Cox, B E 25 ; Cozzika, G 26 ; Cvach, J 27 ; Dainton, J B 28 ; Dau, W D 29 ; Daum, K 30 ; de Boer, Y 7 ; Delcourt, B 11 ; M Del Degan 12 ; De Roeck, A 31 ; De Wolf, EA 3 ; Diaconu, C 19 ; Dodonov, V 32 ; Dubak, A 33 ; Eckerlin, G 1 ; Efremenko, V 7 ; Egli, S 34 ; Eichler, R 34 ; Eisele, F 13 ; Eliseev, A 2 ; Elsen, E 1 ; Essenov, S 7 ; Falkewicz, A 35 ; Faulkner, PJW 24 ; Favart, L 6 ; Fedotov, A 7 ; Felst, R 1 ; Feltesse, J 26 ; Ferencei, J 16 ; Finke, L 17 ; Fleischer, M 1 ; Flucke, G 5 ; Fomenko, A 2 ; Franke, G 1 ; Frisson, T 15 ; Gabathuler, E 28 ; Garutti, E 1 ; Gayler, J 1 ; Gerlich, C 13 ; Ghazaryan, S 9 ; Ginzburgskaya, S 7 ; Glazov, A 1 ; Glushkov, I 36 ; Goerlich, L 35 ; Goettlich, M 1 ; Gogitidze, N 2 ; Gorbounov, S 36 ; Grab, C 12 ; Greenshaw, T 28 ; Gregori, M 37 ; Grell, B R 1 ; Grindhammer, G 4 ; Gwilliam, C 25 ; Haidt, D 1 ; Hansson, M 38 ; Heinzelmann, G 17 ; Henderson, RCW 39 ; Henschel, H 36 ; Herrera, G 40 ; Hildebrandt, M 34 ; Hiller, KH 36 ; Hoffmann, D 19 ; Horisberger, R 34 ; Hovhannisyan, A 9 ; Hreus, T 41 ; Hussain, S 37 ; Ibbotson, M 25 ; Ismail, M 25 ; Jacquet, M 11 ; Janssen, X 6 ; Jemanov, V 17 ; Jönsson, L 38 ; Johnson, CL 24 ; Johnson, D P 6 ; Jung, A W 42 ; Jung, H 43 ; Kapichine, M 44 ; Katzy, J 1 ; Kenyon, IR 24 ; Kiesling, C 4 ; Klein, M 36 ; Kleinwort, C 1 ; Klimkovich, T 1 ; Kluge, T 1 ; Knies, G 1 ; Knutsson, A 38 ; Korbel, V 1 ; Kostka, P 36 ; Krastev, K 1 ; Kretzschmar, J 36 ; Kropivnitskaya, A 7 ; Krüger, K 42 ; Landon, MPJ 37 ; Lange, W 36 ; Laštovička-Medin, G 8 ; Laycock, P 28 ; Lebedev, A 2 ; Leibenguth, G 12 ; Lendermann, V 42 ; Levonian, S 1 ; Lindfeld, L 45 ; Lipka, K 36 ; Liptaj, A 4 ; List, B 12 ; List, J 17 ; Lobodzinska, E 46 ; Loktionova, N 2 ; Lopez-Fernandez, R 40 ; Lubimov, V 7 ; A-I Lucaci-Timoce 1 ; Lueders, H 17 ; Lux, T 17 ; Lytkin, L 32 ; Makankine, A 44 ; Malden, N 25 ; Malinovski, E 2 ; Marage, P 6 ; Marshall, R 25 ; Marti, L 1 ; Martisikova, M 1 ; H-U, Martyn 47 ; Maxfield, S J 28 ; Mehta, A 28 ; Meier, K 42 ; Meyer, AB 1 ; Meyer, H 48 ; Meyer, J 1 ; Michels, V 1 ; Mikocki, S 35 ; Milcewicz-Mika, I 35 ; Milstead, D 28 ; Mladenov, D 49 ; Mohamed, A 28 ; Moreau, F 15 ; Morozov, A 44 ; Morris, J V 23 ; Mozer, MU 13 ; Müller, K 45 ; Murín, P 50 ; Nankov, K 49 ; Naroska, B 17 ; Naumann, T 36 ; Newman, PR 24 ; Niebuhr, C 1 ; Nikiforov, A 4 ; Nowak, G 35 ; Nowak, K 45 ; Nozicka, M 20 ; Oganezov, R 9 ; Olivier, B 4 ; Olsson, JE 1 ; Osman, S 38 ; Ozerov, D 7 ; Palichik, V 44 ; Panagoulias, I 1 ; Papadopoulou, T 1 ; Pascaud, C 11 ; Patel, G D 28 ; Peng, H 1 ; Perez, E 26 ; Perez-Astudillo, D 22 ; Perieanu, A 1 ; Petrukhin, A 7 ; Pitzl, D 1 ; Plačakytė, R 4 ; Portheault, B 11 ; Povh, B 32 ; Prideaux, P 28 ; Rahmat, A J 28 ; Raicevic, N 8 ; Reimer, P 27 ; Rimmer, A 28 ; Risler, C 1 ; Rizvi, E 37 ; Robmann, P 45 ; Roland, B 6 ; Roosen, R 6 ; Rostovtsev, A 7 ; Rurikova, Z 4 ; Rusakov, S 2 ; Salvaire, F 17 ; Sankey, DPC 23 ; Sauter, M 12 ; Sauvan, E 19 ; F-P Schilling 31 ; Schmidt, S 1 ; Schmitt, S 1 ; Schmitz, C 45 ; Schoeffel, L 26 ; Schöning, A 12 ; H-C Schultz-Coulon 42 ; Sefkow, F 1 ; Shaw-West, R N 24 ; Sheviakov, I 2 ; Shtarkov, L N 2 ; Sloan, T 39 ; Smirnov, P 2 ; Soloviev, Y 2 ; South, D 1 ; Spaskov, V 44 ; Specka, A 15 ; Steder, M 1 ; Stella, B 5 ; Stiewe, J 42 ; Stoilov, A 49 ; Straumann, U 45 ; Sunar, D 3 ; Tchoulakov, V 44 ; Thompson, G 37 ; Thompson, P D 24 ; Toll, T 1 ; Tomasz, F 16 ; Traynor, D 37 ; Trinh, T N 19 ; Truöl, P 45 ; Tsakov, I 49 ; Tsipolitis, G 51 ; Tsurin, I 1 ; Turnau, J 35 ; Tzamariudaki, E 4 ; Urban, K 42 ; Urban, M 45 ; Usik, A 2 ; Utkin, D 7 ; Valkárová, A 20 ; Vallée, C 19 ; P Van Mechelen 3 ; A Vargas Trevino 14 ; Vazdik, Y 2 ; Veelken, C 28 ; Vinokurova, S 1 ; Volchinski, V 9 ; Wacker, K 14 ; Weber, G 17 ; Weber, R 12 ; Wegener, D 14 ; Werner, C 13 ; Wessels, M 1 ; Wessling, B 1 ; Wissing, C 14 ; Wolf, R 13 ; Wünsch, E 1 ; Xella, S 45 ; Yan, W 1 ; Yeganov, V 9 ; Žáček, J 20 ; Zálešák, J 27 ; Zhang, Z 11 ; Zhelezov, A 7 ; Zhokin, A 7 ; Zhu, Y C 1 ; Zimmermann, J 4 ; Zimmermann, T 12 ; Zohrabyan, H 9 ; Zomer, F 11
1 DESY, Hamburg, Germany
2 Lebedev Physical Institute, Moscow, Russia
3 Universiteit Antwerpen, Antwerpen, Belgium
4 Max-Planck-Institut für Physik, München, Germany
5 Dipartimento di Fisica, Università di Roma Tre and INFN Roma 3, Roma, Italy
6 Inter-University Institute for High Energies ULB-VUB, Brussels, Belgium
7 Institute for Theoretical and Experimental Physics, Moscow, Russia
8 Faculty of Science, University of Montenegro, Podgorica, Serbia and Montenegro
9 Yerevan Physics Institute, Yerevan, Armenia
10 LPNHE, Universités Paris VI and VII, IN2P3-CNRS, Paris, France
11 LAL, Université de Paris-Sud 11, IN2P3-CNRS, Orsay, France
12 Institut für Teilchenphysik, ETH, Zürich, Switzerland
13 Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany
14 Institut für Physik, Universität Dortmund, Dortmund, Germany
15 LLR, Ecole Polytechnique, IN2P3-CNRS, Palaiseau, France
16 Institute of Experimental Physics, Slovak Academy of Sciences, Košice, Slovak Republic
17 Institut für Experimentalphysik, Universität Hamburg, Hamburg, Germany
18 Max-Planck-Institut für Kernphysik, Heidelberg, Germany; Yerevan Physics Institute, Yerevan, Armenia
19 CPPM, CNRS/IN2P3 – Univ. Mediterranee, Marseille, France
20 Faculty of Mathematics and Physics, Charles University, Praha, Czech Republic
21 Institute of Experimental Physics, Slovak Academy of Sciences, Košice, Slovak Republic; Comenius University, Bratislava, Slovak Republic
22 Departamento de Fisica Aplicada, CINVESTAV, Merida, Yucatan, Mexico
23 Rutherford Appleton Laboratory, Chilton, Didcot, UK
24 School of Physics and Astronomy, University of Birmingham, Birmingham, UK
25 Physics Department, University of Manchester, Manchester, UK
26 CEA, DSM/DAPNIA, CE-Saclay, Gif-sur-Yvette, France
27 Institute of Physics, Academy of Sciences of the Czech Republic, Praha, Czech Republic
28 Department of Physics, University of Liverpool, Liverpool, UK
29 Institut für Experimentelle und Angewandte Physik, Universität Kiel, Kiel, Germany
30 Fachbereich C, Universität Wuppertal, Wuppertal, Germany; Rechenzentrum, Universität Wuppertal, Wuppertal, Germany
31 DESY, Hamburg, Germany; CERN, Geneva, Switzerland
32 Max-Planck-Institut für Kernphysik, Heidelberg, Germany
33 Faculty of Science, University of Montenegro, Podgorica, Serbia and Montenegro; Max-Planck-Institut für Physik, München, Germany
34 Paul Scherrer Institut, Villigen, Switzerland
35 Institute for Nuclear Physics, Cracow, Poland
36 DESY, Zeuthen, Germany
37 Queen Mary and Westfield College, London, UK
38 Physics Department, University of Lund, Lund, Sweden
39 Department of Physics, University of Lancaster, Lancaster, UK
40 Departamento de Fisica, CINVESTAV, Merida, Yucatan, Mexico
41 Inter-University Institute for High Energies ULB-VUB, Brussels, Belgium; University of P.J. Šafárik, Košice, Slovak Republic
42 Kirchhoff-Institut für Physik, Universität Heidelberg, Heidelberg, Germany
43 Physics Department, University of Lund, Lund, Sweden; DESY, Hamburg, Germany
44 Joint Institute for Nuclear Research, Dubna, Russia
45 Physik-Institut, Universität Zürich, Zürich, Switzerland
46 DESY, Zeuthen, Germany; Institute for Nuclear Physics, Cracow, Poland
47 I. Physikalisches Institut, RWTH, Aachen, Germany
48 Fachbereich C, Universität Wuppertal, Wuppertal, Germany
49 Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria
50 Institute of Experimental Physics, Slovak Academy of Sciences, Košice, Slovak Republic; University of P.J. Šafárik, Košice, Slovak Republic
51 DESY, Hamburg, Germany; Physics Department, National Technical University, Athens, Greece
1 DESY, Hamburg, Germany
2 Lebedev Physical Institute, Moscow, Russia
3 Universiteit Antwerpen, Antwerpen, Belgium
4 Max-Planck-Institut für Physik, München, Germany
5 Dipartimento di Fisica, Università di Roma Tre and INFN Roma 3, Roma, Italy
6 Inter-University Institute for High Energies ULB-VUB, Brussels, Belgium
7 Institute for Theoretical and Experimental Physics, Moscow, Russia
8 Faculty of Science, University of Montenegro, Podgorica, Serbia and Montenegro
9 Yerevan Physics Institute, Yerevan, Armenia
10 LPNHE, Universités Paris VI and VII, IN2P3-CNRS, Paris, France
11 LAL, Université de Paris-Sud 11, IN2P3-CNRS, Orsay, France
12 Institut für Teilchenphysik, ETH, Zürich, Switzerland
13 Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany
14 Institut für Physik, Universität Dortmund, Dortmund, Germany
15 LLR, Ecole Polytechnique, IN2P3-CNRS, Palaiseau, France
16 Institute of Experimental Physics, Slovak Academy of Sciences, Košice, Slovak Republic
17 Institut für Experimentalphysik, Universität Hamburg, Hamburg, Germany
18 Max-Planck-Institut für Kernphysik, Heidelberg, Germany; Yerevan Physics Institute, Yerevan, Armenia
19 CPPM, CNRS/IN2P3 – Univ. Mediterranee, Marseille, France
20 Faculty of Mathematics and Physics, Charles University, Praha, Czech Republic
21 Institute of Experimental Physics, Slovak Academy of Sciences, Košice, Slovak Republic; Comenius University, Bratislava, Slovak Republic
22 Departamento de Fisica Aplicada, CINVESTAV, Merida, Yucatan, Mexico
23 Rutherford Appleton Laboratory, Chilton, Didcot, UK
24 School of Physics and Astronomy, University of Birmingham, Birmingham, UK
25 Physics Department, University of Manchester, Manchester, UK
26 CEA, DSM/DAPNIA, CE-Saclay, Gif-sur-Yvette, France
27 Institute of Physics, Academy of Sciences of the Czech Republic, Praha, Czech Republic
28 Department of Physics, University of Liverpool, Liverpool, UK
29 Institut für Experimentelle und Angewandte Physik, Universität Kiel, Kiel, Germany
30 Fachbereich C, Universität Wuppertal, Wuppertal, Germany; Rechenzentrum, Universität Wuppertal, Wuppertal, Germany
31 DESY, Hamburg, Germany; CERN, Geneva, Switzerland
32 Max-Planck-Institut für Kernphysik, Heidelberg, Germany
33 Faculty of Science, University of Montenegro, Podgorica, Serbia and Montenegro; Max-Planck-Institut für Physik, München, Germany
34 Paul Scherrer Institut, Villigen, Switzerland
35 Institute for Nuclear Physics, Cracow, Poland
36 DESY, Zeuthen, Germany
37 Queen Mary and Westfield College, London, UK
38 Physics Department, University of Lund, Lund, Sweden
39 Department of Physics, University of Lancaster, Lancaster, UK
40 Departamento de Fisica, CINVESTAV, Merida, Yucatan, Mexico
41 Inter-University Institute for High Energies ULB-VUB, Brussels, Belgium; University of P.J. Šafárik, Košice, Slovak Republic
42 Kirchhoff-Institut für Physik, Universität Heidelberg, Heidelberg, Germany
43 Physics Department, University of Lund, Lund, Sweden; DESY, Hamburg, Germany
44 Joint Institute for Nuclear Research, Dubna, Russia
45 Physik-Institut, Universität Zürich, Zürich, Switzerland
46 DESY, Zeuthen, Germany; Institute for Nuclear Physics, Cracow, Poland
47 I. Physikalisches Institut, RWTH, Aachen, Germany
48 Fachbereich C, Universität Wuppertal, Wuppertal, Germany
49 Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria
50 Institute of Experimental Physics, Slovak Academy of Sciences, Košice, Slovak Republic; University of P.J. Šafárik, Košice, Slovak Republic
51 DESY, Hamburg, Germany; Physics Department, National Technical University, Athens, Greece
Pages
715-748
Publication year
2006
Publication date
Dec 2006
ISSN
14346044
e-ISSN
14346052
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2334219402
Copyright
The European Physical Journal C - Particles and Fields is a copyright of Springer, (2006). All Rights Reserved.