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Collective sea-gull effect in πp interactions at 250 GeV/c |
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| Authors: | EHS/NA Collaboration N M Agababyan I V Ajinenko M R Atayan F Botterweck M Charlet P V Chliapnikov E A De Wolf K Dziunikowska Z C Garutchava G R Gulkanyan R Sh Hakobyan J K Karamyan D Kisielewska W Kittel S S Mehrabyan L C S Oliveira F K Rizatdinova L A Tikhonova A Tomaradze F Verbeure S A Zotkin |
| Institution: | a Department of Physics, Universitaire Instelling Antwerpen, B-2610, Wilrijk, Belgium b Inter-University Institute for High Energies, B-1050, Brussels, Belgium c Institute of Physics and Nuclear Technique of Academy of Mining and Metallurgy and Institute of Nuclear Physics, PL-30055, Krakow, Poland d Nuclear Physics Institute, Moscow State University, RU-119899, Moscow, Russia e University of Nijmegen and NIKHEF-H, NL-6525 ED, Nijmegen, The Netherlands f Institute for High Energy Physics, RU-142284, Protvino, Russia g Centro Brasileiro de Pesquisas Fisicas, 22290, Rio de Janeiro, Brazil h Institute of High Energy Physics of Tbilisi State University, GE-380086, Tbilisi, Georgia i Institute of Physics, AM-375036, Yerevan, Armenia |
| Abstract: | A collective “sea-gull” effect is observed for a system of fast hadrons produced in the fragmentation regions of nondiffractive π+p-interactions at 250 GeV/c. The effect is not reproduced by the FRITIOF fragmentation model in its details. It is demonstrated that hard-like processes, both in the collision phase and in the fragmentation phase, are not properly treated in the model. |
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