@article{3115282,
    title = "Study of leading hadrons in gluon and quark fragmentation",
    author = "Abdallah, J. and Abreu, P. and Adam, W. and Adzic, P. and Albrecht, T. and and Alemany-Fernandez, R. and Allmendinger, T. and Allport, P. P. and and Amaldi, U. and Amapane, N. and Amato, S. and Anashkin, E. and Andreazza, and A. and Andringa, S. and Anjos, N. and Antilogus, P. and Apel, W. -D. and and Arnoud, Y. and Ask, S. and Asman, B. and Augustin, J. E. and Augustinus, and A. and Baillon, P. and Ballestrero, A. and Bambade, P. and Barbier, R. and and Bardin, D. and Barker, G. J. and Baroncelli, A. and Battaglia, M. and and Baubillier, M. and Becks, K. -H. and Begalli, M. and Behrmann, A. and and Ben-Haim, E. and Benekos, N. and Benvenuti, A. and Berat, C. and and Berggren, M. and Berntzon, L. and Bertrand, D. and Besancon, M. and and Besson, N. and Bloch, D. and Blom, M. and Bluj, M. and Bonesini, M. and and Boonekamp, M. and Booth, P. S. L. and Borisov, G. and Botner, O. and and Bouquet, B. and Bowcock, T. J. V. and Boyko, I. and Bracko, M. and and Brenner, R. and Brodet, E. and Bruckman, P. and Brunet, J. M. and and Buschbeck, B. and Buschmann, P. and Calvi, M. and Camporesi, T. and and Canale, V. and Carena, F. and Castro, N. and Cavallo, F. and Chapkin, M. and and Charpentier, Ph. and Checchia, P. and Chierici, R. and Chliapnikov, and P. and Chudoba, J. and Chung, S. U. and Cieslik, K. and Collins, P. and and Contri, R. and Cosme, G. and Cossutti, F. and Costa, M. J. and Crennell, and D. and Cuevas, J. and D'Hondt, J. and Dalmau, J. and da Silva, T. and Da and Silva, W. and Della Ricca, G. and De Angelis, A. and De Boer, W. and De and Clercq, C. and De Lotto, B. and De Maria, N. and De Min, A. and de and Paula, L. and Di Ciaccio, L. and Di Simone, A. and Doroba, K. and Drees, and J. and Eigen, G. and Ekelof, T. and Ellert, M. and Elsing, M. and and Espirito Santo, M. C. and Fanourakis, G. and Fassouliotis, D. and and Feindt, M. and Fernandez, J. and Ferrer, A. and Ferro, F. and Flagmeyer, and U. and Foeth, H. and Fokitis, E. and Fulda-Quenzer, F. and Fuster, J. and and Gandelman, M. and Garcia, C. and Gavillet, Ph. and Gazis, E. and and Gokieli, R. and Golob, B. and Gomez-Ceballos, G. and Goncalves, P. and and Graziani, E. and Grosdidier, G. and Grzelak, K. and Guy, J. and Haag, C. and and Hallgren, A. and Hamacher, K. and Hamilton, K. and Haug, S. and and Hauler, F. and Hedberg, V. and Hennecke, M. and Herr, H. and Hoffman, J. and and Holmgren, S. -O. and Holt, P. J. and Houlden, M. A. and Jackson, J. and N. and Jarlskog, G. and Jarry, P. and Jeans, D. and Johansson, E. K. and and Johansson, P. D. and Jonsson, P. and Joram, C. and Jungermann, L. and and Kapusta, F. and Katsanevas, S. and Katsoufis, E. and Kernel, G. and and Kersevan, B. P. and Kerzel, U. and King, B. T. and Kjaer, N. J. and and Kluit, P. and Kokkinias, P. and Kourkoumelis, C. and Kouznetsov, O. and and Krumstein, Z. and Kucharczyk, M. and Lamsa, J. and Leder, G. and and Ledroit, F. and Leinonen, L. and Leitner, R. and Lemonne, J. and and Lepeltier, V. and Lesiak, T. and Liebig, W. and Liko, D. and Lipniacka, and A. and Lopes, J. H. and Lopez, J. M. and Loukas, D. and Lutz, P. and and Lyons, L. and MacNaughton, J. and Malek, A. and Maltezos, S. and Mandl, and F. and Marco, J. and Marco, R. and Marechal, B. and Margoni, M. and and Marin, J. -C. and Mariotti, C. and Markou, A. and Martinez-Rivero, C. and and Masik, J. and Mastroyiannopoulos, N. and Matorras, F. and Matteuzzi, and C. and Mazzucato, F. and Mazzucato, M. and Mc Nulty, R. and Meroni, C. and and Migliore, E. and Mitaroff, W. and Mjoernmark, U. and Moa, T. and and Moch, M. and Moenig, K. and Monge, R. and Montenegro, J. and Moraes, D. and and Moreno, S. and Morettini, P. and Mueller, U. and Muenich, K. and and Mulders, M. and Mundim, L. and Murray, W. and Muryn, B. and Myatt, G. and and Myklebust, T. and Nassiakou, M. and Navarria, F. and Nawrocki, K. and and Nicolaidou, R. and Nikolenko, M. and Oblakowska-Mucha, A. and and Obraztsov, V. and Olshevski, A. and Onofre, A. and Orava, R. and and Osterberg, K. and Ouraou, A. and Oyanguren, A. and Paganoni, M. and and Paiano, S. and Palacios, J. P. and Palka, H. and Papadopoulou, Th. D. and and Pape, L. and Parkes, C. and Parodi, F. and Parzefall, U. and and Passeri, A. and Passon, O. and Peralta, L. and Perepelitsa, V. and and Perrotta, A. and Petrolini, A. and Piedra, J. and Pieri, L. and Pierre, and F. and Pimenta, M. and Piotto, E. and Podobnik, T. and Poireau, V. and and Pol, M. E. and Polok, G. and Pozdniakov, V. and Pukhaeva, N. and Pullia, and A. and Rames, J. and Read, A. and Rebecchi, P. and Rehn, J. and Reid, D. and and Reinhardt, R. and Renton, P. and Richard, F. and Ridky, J. and and Rivero, M. and Rodriguez, D. and Romero, A. and Ronchese, P. and and Roudeau, P. and Rovelli, T. and Ruhlmann-Kleider, V. and Ryabtchikov, D. and and Sadovsky, A. and Salmi, L. and Salt, J. and Sander, C. and and Savoy-Navarro, A. and Schwickerath, U. and Sekulin, R. and Siebel, M. and and Sisakian, A. and Smadja, G. and Smirnova, O. and Sokolov, A. and and Sopczak, A. and Sosnowski, R. and Spassov, T. and Stanitzki, M. and and Stocchi, A. and Strauss, J. and Stugu, B. and Szczekowski, M. and and Szeptycka, M. and Szumlak, T. and Tabarelli, T. and Taffard, A. C. and and Tegenfeldt, F. and Timmermans, J. and Tkatchev, L. and Tobin, M. and and Todorovova, S. and Tome, B. and Tonazzo, A. and Tortosa, P. and and Travnicek, P. and Treille, D. and Tristram, G. and Trochimczuk, M. and and Troncon, C. and Turluer, M. -L. and Tyapkin, I. A. and Tyapkin, P. and and Tzamarias, S. and Uvarov, V. and Valenti, G. and Van Dam, P. and Van and Eldik, J. and van Remortel, N. and Van Vulpen, I. and Vegni, G. and and Veloso, F. and Venus, W. and Verdier, P. and Verzi, V. and Vilanova, D. and and Vitale, L. and Vrba, V. and Wahlen, H. and Washbrook, A. J. and and Weiser, C. and Wicke, D. and Wickens, J. and Wilkinson, G. and Winter, and M. and Witek, M. and Yushchenko, O. and Zalewska, A. and Zalewski, P. and and Zavrtanik, D. and Zhuravlov, V. and Zimin, N. I. and Zintchenko, A. and and Zupan, M. and DELPHI Collaboration",
    journal = "PHYSICS LETTERS B",
    year = "2006",
    volume = "643",
    number = "3-4",
    pages = "147-157",
    publisher = "Elsevier",
    issn = "0370-2693",
    doi = "10.1016/j.physletb.2006.10.040",
    abstract = "The study of quark jets in e(+)e(-) reactions at LEP has demonstrated
that the hadronisation process is reproduced well by the Lund string
model. However. our understanding of gluon fragmentation is less
complete. In this study enriched quark and gluon jet samples of
different purities are selected in three-jet events from hadronic decays
of the Z collected by the DELPHI experiment in the LEP runs during 1994
and 1995. The leading systems of the two kinds of jets are defined by
requiring a rapidity gap and their sum of charges is studied. An excess
of leading systems with total charge zero is found for gluon jets in all
cases, when compared to Monte Carlo simulations with JETSET (with and
without Bose-Einstein correlations included) and ARIADNE. The
corresponding leading systems of quark jets do not exhibit such an
excess. The influence of the gap size and of the gluon purity on the
effect is studied and a concentration of the excess of neutral leading
systems at low invariant masses (less than or similar to 2 GeV/c(2)) is
observed, indicating that gluon jets might have an additional hitherto
undetected fragmentation mode via a two-gluon system. This could be an
indication of a possible production of gluonic states as predicted by
QCD. (c) 2006 Elsevier B.V. All rights reserved."
}