Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Study of inclusive J/psi production in two-photon collisions at LEP II with the DELPHI detector

Abdallah, J ; Abreu, P ; Adam, W ; Adzic, P ; Albrecht, T ; Alderweireld, T ; Alemany-Fernandez, R ; Allmendinger, T ; Allport, PP and Almehed, Sverker LU , et al. (2003) In Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics 565(1-4). p.76-86
Abstract
Inclusive J/psi production in photon-photon collisions has been observed at LEP II beam energies. A clear signal from the reaction gammagamma --> J/psi + X is seen. The number of observed N(J/psi --> mu(+)mu(-)) events is 36+/-7 for an integrated luminosity of 617 pb(-1), yielding a cross-section of sigma(J/psi + X) = 45+/-9(stat) +/- 17(syst) pb. Based on a study of the event shapes of different types of gammagamma processes in the PYTHIA program, we conclude that (74+/-22) % of the observed J/psi events are due to 'resolved' photons, the dominant contribution of which is most probably due to the gluon content of the photon. (C) 2003 Published by Elsevier B.V.
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; ; and , et al. (More)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; and (Less)
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
565
issue
1-4
pages
76 - 86
publisher
Elsevier
external identifiers
  • wos:000184095300008
  • scopus:0038606456
ISSN
0370-2693
DOI
10.1016/S0370-2693(03)00660-9
language
English
LU publication?
yes
id
c512af01-03e6-43e0-b01d-23c49bc94815 (old id 306259)
date added to LUP
2016-04-01 16:29:37
date last changed
2023-01-12 20:12:52
@article{c512af01-03e6-43e0-b01d-23c49bc94815,
  abstract     = {{Inclusive J/psi production in photon-photon collisions has been observed at LEP II beam energies. A clear signal from the reaction gammagamma --> J/psi + X is seen. The number of observed N(J/psi --> mu(+)mu(-)) events is 36+/-7 for an integrated luminosity of 617 pb(-1), yielding a cross-section of sigma(J/psi + X) = 45+/-9(stat) +/- 17(syst) pb. Based on a study of the event shapes of different types of gammagamma processes in the PYTHIA program, we conclude that (74+/-22) % of the observed J/psi events are due to 'resolved' photons, the dominant contribution of which is most probably due to the gluon content of the photon. (C) 2003 Published by Elsevier B.V.}},
  author       = {{Abdallah, J and Abreu, P and Adam, W and Adzic, P and Albrecht, T and Alderweireld, T and Alemany-Fernandez, R and Allmendinger, T and Allport, PP and Almehed, Sverker and Amaldi, U and Amapane, N and Amato, S and Anashkin, E and Andreazza, A and Andringa, S and Anjos, N and Antilogus, P and Apel, WD and Arnoud, Y and Ask, Stefan and Asman, B and Augustin, JE and Augustinus, A and Baillon, P and Ballestrero, A and Bambade, P and Barbier, R and Bardin, D and Barker, G and Baroncelli, A and Battaglia, M and Baubillier, M and Becks, KH and Begalli, M and Behrmann, A and Bellunato, T and Belous, K and Benekos, N and Benvenuti, A and Berat, C and Berggren, M and Berntzon, L and Bertrand, D and Besancon, M and Besson, N and Bloch, D and Blom, M and Bonesini, M and Boonekamp, M and Booth, PSL and Borisov, G and Botner, O and Bouquet, B and Bowcock, T and Boyko, I and Bracko, M and Brenner, R and Brodet, E and Bruckman, P and Brunet, JM and Bugge, L and Buschmann, P and Calvi, M and Camporesi, T and Canale, V and Carena, F and Carimalo, C and Castro, N and Cavallo, F and Chapkin, M and Charpentier, P and Checchia, P and Chierici, R and Chliapnikov, P and Chung, K and Cieslik, K and Collins, P and Contri, R and Cosme, G and Cossutti, F and Costa, MJ and Crawley, B and Crennell, D and Cuevas, J and D'Hondt, J and Dalmau, J and da Silva, T and Da Silva, W and Della Ricca, G and De Angelis, A and De Boer, W and De Clercq, C and De Lotto, B and De Maria, N and De Min, A and de Paula, L and Di Ciaccio, L and Di Simone, A and Doroba, K and Drees, J and Dris, M and Eigen, G and Ekelof, T and Ellert, M and Elsing, M and Santo, MCE and Fanourakis, G and Fassouliotis, D and Feindt, M and Fernandez, J and Ferrer, A and Ferro, F and Flagmeyer, U and Foeth, H and Fokitis, E and Fulda-Quenzer, F and Fuster, J and Gandelman, M and Garcia, C and Gavillet, P and Gazis, E and Gele, D and Geralis, T and Gokieli, R and Golob, B and Gomez-Ceballos, G and Goncalves, P and Graziani, E and Grosdidier, G and Grzelak, K and Guy, J and Haag, C and Hahn, F and Hahn, S and Hallgren, A and Hamacher, K and Hamilton, K and Hansen, J and Haug, S and Hauler, F and Hedberg, Vincent and Hennecke, M and Herr, H and Holmgren, SO and Holt, PJ and Houlden, MA and Hultqvist, K and Jackson, JN and Jarlskog, Christina and Jarlskog, Göran and Jarry, P and Jean, D and Johansson, EK and Johansson, PD and Jonsson, P and Joram, C and Jungermann, L and Kapusta, F and Katsanevas, S and Katsoufis, E and Keranen, R and Kernel, G and Kersevan, BP and Kiiskinen, A and King, BT and Kjaer, NJ and Kluit, P and Kokkinias, P and Kourkoumelis, C and Kouznetsov, O and Krumstein, Z and Kucharczyk, M and Kurowska, J and Laforge, B and Lamsa, J and Leder, G and Ledroit, F and Leinonen, L and Leitner, R and Lemonne, J and Lenzen, G and Lepeltier, V and Lesiak, T and Liebig, W and Liko, D and Lipniacka, A and Lopes, JH and Lopez, JM and Loukas, D and Lutz, P and Lyons, L and MacNaughton, J and Malek, A and Maltezos, S and Mandl, F and Marco, J and Marco, R and Marechal, B and Margoni, M and Marin, JC and Mariotti, C and Markou, A and Martinez-Rivero, C and Masik, J and Mastroyiannopoulos, N and Matorras, F and Matteuzzi, C and Mazzucato, F and Mazzucato, M and Mc Nulty, R and Meroni, C and Meyer, WT and Migliore, E and Miraroff, W and Mjörnmark, Ulf and Moa, T and Moch, M and Moenig, K and Monge, R and Montenegro, J and Moraes, D and Moreno, S and Morettini, P and Mueller, U and Muenich, K and Mulders, M and Mundim, L and Murray, W and Muryn, B and Myatt, G and Myklebust, T and Nassiakou, M and Navarria, F and Nawrocki, K and Nemecek, S and Nicolaidou, R and Niezurawski, P and Nikolenko, M and Nygren, A and Oblakowska-Mucha, O and Obraztsov, V and Olshevski, A and Onofre, A and Orava, R and Osterberg, K and Ouraou, A and Oyanguren, A and Paganoni, M and Paiano, S and Palacios, JP and Palka, H and Papadopoulou, TD and Pape, L and Parkes, C and Parodi, F and Parzefall, U and Passeri, A and Passon, O and Peralta, L and Perepelitsa, V and Perrotta, A and Petrolini, A and Piedra, J and Pieri, L and Pierre, F and Pimenta, M and Piotto, E and Podobnik, T and Poireau, V and Pol, ME and Polok, G and Poropat, P and Pozdniakov, V and Privitera, P and Pukhaeva, N and Pullia, A and Rames, J and Ramler, L and Read, A and Rebecchi, P and Rehn, J and Reid, D and Reinhardt, R and Renton, P and Richard, F and Ridky, J and Ripp-Baudot, I and Rodriguez, D and Romero, A and Ronchese, P and Rosenberg, E and Roudeau, P and Rovelli, T and Ruhlmann-Kleider, V and Ryabtchikov, D and Sadovsky, A and Salmi, L and Salt, J and Savoy-Navarro, A and Schwanda, C and Schwering, B and Schwickerath, U and Segar, A and Sekulin, R and Siebel, M and Sisakian, A and Smadja, G and Smirnova, Oxana and Sokolov, A and Sopczak, A and Sosnowski, R and Spassov, T and Stanitzki, M and Stocchi, A and Strauss, J and Stugu, B and Szczekowski, M and Szeptycka, M and Szumlak, T and Tabarelli, T and Taffard, AC and Tegenfeldt, F and Terranova, F and Timmermans, J and Tinti, N and Tkatchev, L and Tobin, M and Todorovova, S and Tome, B and Tonazzo, A and Tortosa, P and Travnicek, P and Treille, D and Tristram, G and Trochimczuk, M and Troncon, C and Tyapkin, IA and Tyapkin, P and Tzamarias, S and Ullaland, O and Uvarov, V and Valenti, G and Van Dam, P and Van Eldik, J and Van Lysebetten, A and van Remortel, N and Van Vulpen, I and Vegni, G and Veloso, F and Venus, W and Verbeure, F and Verdier, P and Verzi, V and Vilanova, D and Vitale, L and Vrba, V and Wahlen, H and Washbrook, AJ and Weiser, C and Wicke, D and Wickens, J and Wilkinson, G and Winter, M and Witek, M and Yushchenko, O and Zalewska, A and Zalewski, P and Zavrtanik, D and Zimin, NI and Zintchenko, A and Zoller, P and Zupan, M}},
  issn         = {{0370-2693}},
  language     = {{eng}},
  number       = {{1-4}},
  pages        = {{76--86}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics}},
  title        = {{Study of inclusive J/psi production in two-photon collisions at LEP II with the DELPHI detector}},
  url          = {{http://dx.doi.org/10.1016/S0370-2693(03)00660-9}},
  doi          = {{10.1016/S0370-2693(03)00660-9}},
  volume       = {{565}},
  year         = {{2003}},
}