Content area
Abstract
The production of two high-pT jets in the interactions of quasi-real photons in e+e− collisions at \(\sqrt{s_{ee}}\) from 189 GeV to 209 GeV is studied with data corresponding to an integrated e+e− luminosity of 550 pb−1. The jets reconstructed by the k⊥-cluster algorithm are defined within the pseudo-rapidity range −1<η<1 and with jet transverse momentum, pT, above 3 GeV/c. The differential di-jet cross-section is measured as a function of the mean transverse momentum \(\overline{p_{T}}\) of the jets and is compared to perturbative QCD calculations.
Details
Title
Di-jet production in γ γ collisions at LEP2
Author
Abdallah, J 1 ; Abreu, P 2 ; Adam, W 3 ; Adzic, P 4 ; Albrecht, T 5 ; Alemany-Fernandez, R 6 ; Allmendinger, T 5 ; Allport, P P 7 ; Amaldi, U 8 ; Amapane, N 9 ; Amato, S 10 ; Anashkin, E 11 ; Andreazza, A 12 ; Andringa, S 2 ; Anjos, N 2 ; Antilogus, P 1 ; W-D Apel 5 ; Arnoud, Y 13 ; Ask, S 6 ; Asman, B 14 ; Augustin, J E 1 ; Augustinus, A 6 ; Baillon, P 6 ; Ballestrero, A 15 ; Bambade, P 16 ; Barbier, R 17 ; Bardin, D 18 ; Barker, G J 19 ; Baroncelli, A 20 ; Battaglia, M 6 ; Baubillier, M 1 ; K-H Becks 21 ; Begalli, M 22 ; Behrmann, A 21 ; Ben-Haim, E 16 ; Benekos, N 23 ; Benvenuti, A 24 ; Berat, C 13 ; Berggren, M 1 ; Bertrand, D 25 ; Besancon, M 26 ; Besson, N 26 ; Bloch, D 27 ; Blom, M 28 ; Bluj, M 29 ; Bonesini, M 8 ; Boonekamp, M 26 ; Booth, P S L 7 ; Borisov, G 30 ; Botner, O 31 ; Bouquet, B 16 ; Bowcock, T J V 7 ; Boyko, I 18 ; Bracko, M 32 ; Brenner, R 31 ; Brodet, E 33 ; Bruckman, P 34 ; Brunet, J M 35 ; Buschbeck, B 3 ; Buschmann, P 21 ; Calvi, M 8 ; Camporesi, T 6 ; Canale, V 36 ; Carena, F 6 ; Castro, N 2 ; Cavallo, F 24 ; Chapkin, M 37 ; Charpentier, Ph 6 ; Checchia, P 11 ; Chierici, R 6 ; Chliapnikov, P 37 ; Chudoba, J 6 ; Chung, S U 6 ; Cieslik, K 34 ; Collins, P 6 ; Contri, R 38 ; Cosme, G 16 ; Cossutti, F 39 ; Costa, M J 40 ; Crennell, D 41 ; Cuevas, J 42 ; J D’Hondt 25 ; da Silva, T 10 ; Da Silva, W 1 ; G Della Ricca 39 ; De Angelis, A 43 ; De Boer, W 5 ; De Clercq, C 25 ; De Lotto, B 43 ; De Maria, N 9 ; De Min, A 11 ; de Paula, L 10 ; L Di Ciaccio 36 ; A Di Simone 20 ; Doroba, K 29 ; Drees, J 44 ; Eigen, G 45 ; Ekelof, T 31 ; Ellert, M 31 ; Elsing, M 6 ; Espirito Santo, M C 2 ; Fanourakis, G 4 ; Fassouliotis, D 46 ; Feindt, M 5 ; Fernandez, J 47 ; Ferrer, A 40 ; Ferro, F 38 ; Flagmeyer, U 21 ; Foeth, H 6 ; Fokitis, E 23 ; Fulda-Quenzer, F 16 ; Fuster, J 40 ; Gandelman, M 10 ; Garcia, C 40 ; Gavillet, Ph 6 ; Gazis, E 23 ; Gokieli, R 48 ; Golob, B 49 ; Gomez-Ceballos, G 47 ; Goncalves, P 2 ; Graziani, E 20 ; Grosdidier, G 16 ; Grzelak, K 29 ; Guy, J 41 ; Haag, C 5 ; Hallgren, A 31 ; Hamacher, K 21 ; Hamilton, K 33 ; Haug, S 50 ; Hauler, F 5 ; Hedberg, V 51 ; Hennecke, M 5 ; Hoffman, J 29 ; S-O Holmgren 14 ; Holt, P J 6 ; Houlden, M A 7 ; Jackson, J N 7 ; Jarlskog, G 51 ; Jarry, P 26 ; Jeans, D 33 ; Johansson, E K 14 ; Jonsson, P 17 ; Joram, C 6 ; Jungermann, L 5 ; Kapusta, F 1 ; Katsanevas, S 17 ; Katsoufis, E 23 ; Kernel, G 32 ; Kersevan, B P 49 ; Kerzel, U 5 ; King, B T 7 ; Kjaer, N J 6 ; Kluit, P 28 ; Kokkinias, P 4 ; Kourkoumelis, C 52 ; Kouznetsov, O 18 ; Krumstein, Z 18 ; Kucharczyk, M 34 ; Lamsa, J 53 ; Leder, G 3 ; Ledroit, F 13 ; Leinonen, L 14 ; Leitner, R 54 ; Lemonne, J 25 ; Lepeltier, V 16 ; Lesiak, T 34 ; Liebig, W 21 ; Liko, D 3 ; Lipniacka, A 14 ; Lopes, J H 10 ; Lopez, J M 42 ; Loukas, D 4 ; Lutz, P 26 ; Lyons, L 33 ; MacNaughton, J 3 ; Malek, A 21 ; Maltezos, S 23 ; Mandl, F 3 ; Marco, J 47 ; Marco, R 47 ; Marechal, B 10 ; Margoni, M 11 ; J-C Marin 6 ; Mariotti, C 6 ; Markou, A 4 ; Martinez-Rivero, C 47 ; Masik, J 55 ; Mastroyiannopoulos, N 4 ; Matorras, F 47 ; Matteuzzi, C 8 ; Mazzucato, F 11 ; Mazzucato, M 11 ; R Mc Nulty 7 ; Meroni, C 12 ; Migliore, E 9 ; Mitaroff, W 3 ; Mjoernmark, U 51 ; Moa, T 14 ; Moch, M 5 ; Moenig, K 56 ; Monge, R 38 ; Montenegro, J 28 ; Moraes, D 10 ; Moreno, S 2 ; Morettini, P 38 ; Mueller, U 21 ; Muenich, K 21 ; Mulders, M 28 ; Mundim, L 22 ; Murray, W 41 ; Muryn, B 57 ; Myatt, G 33 ; Myklebust, T 50 ; Nassiakou, M 4 ; Navarria, F 24 ; Nawrocki, K 29 ; Nemecek, S 55 ; Nicolaidou, R 26 ; Nikolenko, M 58 ; Oblakowska-Mucha, A 57 ; Obraztsov, V 37 ; Olshevski, A 18 ; Onofre, A 2 ; Orava, R 59 ; Osterberg, K 59 ; Ouraou, A 26 ; Oyanguren, A 40 ; Paganoni, M 8 ; Paiano, S 24 ; Palacios, J P 7 ; Palka, H 34 ; Papadopoulou, Th D 23 ; Pape, L 6 ; Parkes, C 60 ; Parodi, F 38 ; Parzefall, U 6 ; Passeri, A 20 ; Passon, O 21 ; Peralta, L 2 ; Perepelitsa, V 40 ; Perrotta, A 24 ; Petrolini, A 38 ; Piedra, J 47 ; Pieri, L 20 ; Pierre, F 26 ; Pimenta, M 2 ; Piotto, E 6 ; Podobnik, T 49 ; Poireau, V 6 ; Pol, M E 61 ; Polok, G 34 ; Pozdniakov, V 18 ; Pukhaeva, N 18 ; Pullia, A 8 ; Radojicic, D 33 ; Rebecchi, P 6 ; Rehn, J 5 ; Reid, D 28 ; Reinhardt, R 21 ; Renton, P 33 ; Richard, F 16 ; Ridky, J 55 ; Rivero, M 47 ; Rodriguez, D 47 ; Romero, A 9 ; Ronchese, P 11 ; Roudeau, P 16 ; Rovelli, T 24 ; Ruhlmann-Kleider, V 26 ; Ryabtchikov, D 37 ; Sadovsky, A 18 ; Salmi, L 59 ; Salt, J 40 ; Sander, C 5 ; Savoy-Navarro, A 1 ; Schwickerath, U 6 ; Sekulin, R 41 ; Siebel, M 21 ; Sisakian, A 18 ; Smadja, G 17 ; Smirnova, O 51 ; Sokolov, A 37 ; Sopczak, A 30 ; Sosnowski, R 29 ; Spassov, T 6 ; Stanitzki, M 5 ; Stocchi, A 16 ; Strauss, J 3 ; Stugu, B 45 ; Szczekowski, M 29 ; Szeptycka, M 29 ; Szumlak, T 57 ; Tabarelli, T 8 ; Tegenfeldt, F 31 ; Timmermans, J 28 ; Tkatchev, L 18 ; Tobin, M 7 ; Todorovova, S 55 ; Tome, B 2 ; Tonazzo, A 8 ; Tortosa, P 40 ; Travnicek, P 55 ; Treille, D 6 ; Tristram, G 35 ; Trochimczuk, M 29 ; Troncon, C 12 ; M-L Turluer 26 ; Tyapkin, I A 18 ; Tzamarias, S 4 ; Uvarov, V 37 ; Valenti, G 24 ; P Van Dam 28 ; J Van Eldik 6 ; N van Remortel 62 ; I Van Vulpen 6 ; Vegni, G 12 ; Veloso, F 2 ; Venus, W 41 ; Verdier, P 17 ; Vertogradova, Yu L 18 ; Verzi, V 36 ; Vilanova, D 26 ; Vitale, L 39 ; Vrba, V 55 ; Wahlen, H 21 ; Washbrook, A J 7 ; Weiser, C 5 ; Wicke, D 6 ; Wickens, J 25 ; Wilkinson, G 33 ; Winter, M 27 ; Witek, M 34 ; Yushchenko, O 37 ; Zalewska, A 34 ; Zalewski, P 29 ; Zavrtanik, D 63 ; Zhuravlov, V 18 ; Zimin, N I 18 ; Zintchenko, A 18 ; Zupan, M 4
1 LPNHE, IN2P3-CNRS, Univ. Paris VI et VII, Paris Cedex 05, France
2 LIP, IST, FCUL, Lisboa Codex, Portugal
3 Institut für Hochenergiephysik, Österr. Akad. d. Wissensch., Vienna, Austria
4 Institute of Nuclear Physics, N.C.S.R. Demokritos, Athens, Greece
5 Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany
6 CERN, Geneva 23, Switzerland
7 Department of Physics, University of Liverpool, Liverpool, UK
8 Dipartimento di Fisica, Univ. di Milano-Bicocca and INFN-MILANO, Milan, Italy
9 Dipartimento di Fisica Sperimentale, Università di Torino and INFN, Turin, Italy
10 Univ. Federal do Rio de Janeiro, C.P. 68528 Cidade Univ., Rio de Janeiro, Brazil
11 Dipartimento di Fisica, Università di Padova and INFN, Padua, Italy
12 Dipartimento di Fisica, Università di Milano and INFN-MILANO, Milan, Italy
13 Institut des Sciences Nucléaires, IN2P3-CNRS, Université de Grenoble 1, Grenoble Cedex, France
14 Fysikum, Stockholm University, Stockholm, Sweden
15 INFN, Sezione di Torino and Dipartimento di Fisica Teorica, Università di Torino, Turin, Italy
16 LAL, Univ Paris-Sud, CNRS/IN2P3, Orsay, France
17 Université Claude Bernard de Lyon, IPNL, IN2P3-CNRS, Villeurbanne Cedex, France
18 Joint Institute for Nuclear Research, Dubna, Head Post Office, Moscow, Russian Federation
19 University of Warwick, Coventry, UK
20 Dipartimento di Fisica, Università di Roma III and INFN, Rome, Italy
21 Fachbereich Physik, University of Wuppertal, Wuppertal, Germany
22 Inst. de Física, Univ. Estadual do Rio de Janeiro, Rio de Janeiro, Brazil
23 Physics Department, National Technical University, Athens, Greece
24 Dipartimento di Fisica, Università di Bologna and INFN, Bologna, Italy
25 IIHE, ULB-VUB, Brussels, Belgium
26 DAPNIA/Service de Physique des Particules, CEA-Saclay, Gif-sur-Yvette Cedex, France
27 Institut de Recherches Subatomiques, IN2P3-CNRS/ULP-BP20, Strasbourg Cedex, France
28 NIKHEF, DB Amsterdam, The Netherlands
29 Inst. Nuclear Studies and University of Warsaw, Warsaw, Poland
30 School of Physics and Chemistry, University of Lancaster, Lancaster, UK
31 Department of Radiation Sciences, University of Uppsala, Uppsala, Sweden
32 J. Stefan Institute, Ljubljana, Slovenia
33 Department of Physics, University of Oxford, Oxford, UK
34 Institute of Nuclear Physics PAN, Krakow, Poland
35 Collège de France, Lab. de Physique Corpusculaire, IN2P3-CNRS, Paris Cedex 05, France
36 Dipartimento di Fisica, Università di Roma II and INFN, Rome, Italy
37 Inst. for High Energy Physics, Serpukov, Protvino, (Moscow Region), Russian Federation
38 Dipartimento di Fisica, Università di Genova and INFN, Genova, Italy
39 Dipartimento di Fisica, Università di Trieste and INFN, Trieste, Italy
40 IFIC, Valencia-CSIC, and D.F.A.M.N., Burjassot (Valencia), Spain
41 Rutherford Appleton Laboratory, Didcot, UK
42 Dpto. Fisica, Univ. Oviedo, Oviedo, Spain
43 Istituto di Fisica, Università di Udine and INFN, Udine, Italy
44 CERN, Geneva 23, Switzerland; Fachbereich Physik, University of Wuppertal, Wuppertal, Germany
45 Department of Physics, University of Bergen, Bergen, Norway
46 Physics Laboratory, University of Athens, Athens, Greece; Institute of Nuclear Physics, N.C.S.R. Demokritos, Athens, Greece
47 Instituto de Fisica de Cantabria (CSIC-UC), Santander, Spain
48 CERN, Geneva 23, Switzerland; Inst. Nuclear Studies and University of Warsaw, Warsaw, Poland
49 J. Stefan Institute, Ljubljana, Slovenia; Department of Physics, University of Ljubljana, Ljubljana, Slovenia
50 Physics Department, University of Oslo, Oslo, Norway
51 Department of Physics, University of Lund, Lund, Sweden
52 Physics Laboratory, University of Athens, Athens, Greece
53 Department of Physics and Astronomy, Iowa State University, Ames IA, USA
54 IPNP of MFF, Charles Univ., Praha 8, Czech Republic
55 FZU, Inst. of Phys. of the C.A.S. High Energy Physics Division, Praha 8, Czech Republic
56 CERN, Geneva 23, Switzerland; DESY-Zeuthen, Zeuthen, Germany
57 Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy, Krakow, Poland
58 Institut de Recherches Subatomiques, IN2P3-CNRS/ULP-BP20, Strasbourg Cedex, France; Joint Institute for Nuclear Research, Dubna, Head Post Office, Moscow, Russian Federation
59 Helsinki Institute of Physics and Department of Physical Sciences, Helsinki, Finland
60 Dept. of Physics and Astronomy, Kelvin Building, University of Glasgow, Glasgow, UK
61 Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, Brazil
62 Physics Department, Universiteit Antwerpen, Antwerpen, Belgium
63 Laboratory for Astroparticle Physics, University of Nova Gorica, Nova Gorica, Slovenia
1 LPNHE, IN2P3-CNRS, Univ. Paris VI et VII, Paris Cedex 05, France
2 LIP, IST, FCUL, Lisboa Codex, Portugal
3 Institut für Hochenergiephysik, Österr. Akad. d. Wissensch., Vienna, Austria
4 Institute of Nuclear Physics, N.C.S.R. Demokritos, Athens, Greece
5 Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany
6 CERN, Geneva 23, Switzerland
7 Department of Physics, University of Liverpool, Liverpool, UK
8 Dipartimento di Fisica, Univ. di Milano-Bicocca and INFN-MILANO, Milan, Italy
9 Dipartimento di Fisica Sperimentale, Università di Torino and INFN, Turin, Italy
10 Univ. Federal do Rio de Janeiro, C.P. 68528 Cidade Univ., Rio de Janeiro, Brazil
11 Dipartimento di Fisica, Università di Padova and INFN, Padua, Italy
12 Dipartimento di Fisica, Università di Milano and INFN-MILANO, Milan, Italy
13 Institut des Sciences Nucléaires, IN2P3-CNRS, Université de Grenoble 1, Grenoble Cedex, France
14 Fysikum, Stockholm University, Stockholm, Sweden
15 INFN, Sezione di Torino and Dipartimento di Fisica Teorica, Università di Torino, Turin, Italy
16 LAL, Univ Paris-Sud, CNRS/IN2P3, Orsay, France
17 Université Claude Bernard de Lyon, IPNL, IN2P3-CNRS, Villeurbanne Cedex, France
18 Joint Institute for Nuclear Research, Dubna, Head Post Office, Moscow, Russian Federation
19 University of Warwick, Coventry, UK
20 Dipartimento di Fisica, Università di Roma III and INFN, Rome, Italy
21 Fachbereich Physik, University of Wuppertal, Wuppertal, Germany
22 Inst. de Física, Univ. Estadual do Rio de Janeiro, Rio de Janeiro, Brazil
23 Physics Department, National Technical University, Athens, Greece
24 Dipartimento di Fisica, Università di Bologna and INFN, Bologna, Italy
25 IIHE, ULB-VUB, Brussels, Belgium
26 DAPNIA/Service de Physique des Particules, CEA-Saclay, Gif-sur-Yvette Cedex, France
27 Institut de Recherches Subatomiques, IN2P3-CNRS/ULP-BP20, Strasbourg Cedex, France
28 NIKHEF, DB Amsterdam, The Netherlands
29 Inst. Nuclear Studies and University of Warsaw, Warsaw, Poland
30 School of Physics and Chemistry, University of Lancaster, Lancaster, UK
31 Department of Radiation Sciences, University of Uppsala, Uppsala, Sweden
32 J. Stefan Institute, Ljubljana, Slovenia
33 Department of Physics, University of Oxford, Oxford, UK
34 Institute of Nuclear Physics PAN, Krakow, Poland
35 Collège de France, Lab. de Physique Corpusculaire, IN2P3-CNRS, Paris Cedex 05, France
36 Dipartimento di Fisica, Università di Roma II and INFN, Rome, Italy
37 Inst. for High Energy Physics, Serpukov, Protvino, (Moscow Region), Russian Federation
38 Dipartimento di Fisica, Università di Genova and INFN, Genova, Italy
39 Dipartimento di Fisica, Università di Trieste and INFN, Trieste, Italy
40 IFIC, Valencia-CSIC, and D.F.A.M.N., Burjassot (Valencia), Spain
41 Rutherford Appleton Laboratory, Didcot, UK
42 Dpto. Fisica, Univ. Oviedo, Oviedo, Spain
43 Istituto di Fisica, Università di Udine and INFN, Udine, Italy
44 CERN, Geneva 23, Switzerland; Fachbereich Physik, University of Wuppertal, Wuppertal, Germany
45 Department of Physics, University of Bergen, Bergen, Norway
46 Physics Laboratory, University of Athens, Athens, Greece; Institute of Nuclear Physics, N.C.S.R. Demokritos, Athens, Greece
47 Instituto de Fisica de Cantabria (CSIC-UC), Santander, Spain
48 CERN, Geneva 23, Switzerland; Inst. Nuclear Studies and University of Warsaw, Warsaw, Poland
49 J. Stefan Institute, Ljubljana, Slovenia; Department of Physics, University of Ljubljana, Ljubljana, Slovenia
50 Physics Department, University of Oslo, Oslo, Norway
51 Department of Physics, University of Lund, Lund, Sweden
52 Physics Laboratory, University of Athens, Athens, Greece
53 Department of Physics and Astronomy, Iowa State University, Ames IA, USA
54 IPNP of MFF, Charles Univ., Praha 8, Czech Republic
55 FZU, Inst. of Phys. of the C.A.S. High Energy Physics Division, Praha 8, Czech Republic
56 CERN, Geneva 23, Switzerland; DESY-Zeuthen, Zeuthen, Germany
57 Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy, Krakow, Poland
58 Institut de Recherches Subatomiques, IN2P3-CNRS/ULP-BP20, Strasbourg Cedex, France; Joint Institute for Nuclear Research, Dubna, Head Post Office, Moscow, Russian Federation
59 Helsinki Institute of Physics and Department of Physical Sciences, Helsinki, Finland
60 Dept. of Physics and Astronomy, Kelvin Building, University of Glasgow, Glasgow, UK
61 Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, Brazil
62 Physics Department, Universiteit Antwerpen, Antwerpen, Belgium
63 Laboratory for Astroparticle Physics, University of Nova Gorica, Nova Gorica, Slovenia
Pages
531-541
Publication year
2008
Publication date
Dec 2008
ISSN
14346044
e-ISSN
14346052
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2294045264
Copyright
The European Physical Journal C is a copyright of Springer, (2008). All Rights Reserved.