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Rapidity correlations in π+ p,K + p andpp interactions at 250 GeV/c |
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| Authors: | V V Aivazyan I V Ajinenko Yu A Belokopytov H Bia?kowska L V Bravina H Böttcher F Botterweck P V Chliapnikov F Crijns A De Roeck E A De Wolf K Dziunikowska A M F Endler Z G Garutchava N G Grigoryan T van Hal T Haupt D Kisielewska W Kittel F Meijers A B Micha?owska V I Nikolaenko K Olkiewicz L P Petrovikh F K Rizatdinova V M Ronjin A M Rybin L Scholten E K Shabalina L N Smirnova N A Sotnikova O G Tchikilev L A Tikhonova A G Tomaradze V A Uvarov R Verbeure R Wischnewski |
| Institution: | 1. Institut of Physics, SU-375036, Yerevan, USSR 2. Institute for High Energy Physics, SU-142284, Serpukhov, USSR 3. University of Warsaw and Institute of Nuclear Problems, PL-00681, Warsaw, Poland 4. Moscow State University, SU-117234, Moscow, USSR 5. Institut für Hochenergiephysik, O-1615, Berlin-Zeuthen, Federal Republic of Germany 6. University of Nijmegen and NIKHEF-H, NL-6525 ED, Nijmegen, The Netherlands 7. Universitaire Instelling Antwerpen, B-2610, Wilrijk, Belgium 10. Institute of Physics and Nuclear Techniques of the Academy of Mining and Metallurgy and Institute of Nuclear Physics, PL-30055, Krakow, Poland 11. Centro Brasileiro de Pesquisas Fisicas, 22290, Rio de Janeiro, Brazil 12. Inst. of High Energy Physics of Tbilisi State University, SU-380086, Tbilisi, USSR 16. VUB/ULB, Inter-University Institute for High Energies, B-1050, Brussels, Belgium |
| Abstract: | Two- and three-particle rapidity correlations are analyzed inK + p and π+ p-interactions at 250 GeV/c. The main contribution to the two- and three-particle correlation functions comes from mixing of events of different multiplicity. The (short range) two-particle correlation remaining after exclusion of mixing is significantly larger for (+?) than for the equal charge combinations, and is positive for a wider range in rapidity difference. FRITIOF and a 2-string DPM are excluded by our data. A quark-gluon (multi-)string model can describe our inclusive correlation function, but needs to be tuned on the short range part. The multiplicity mixing part increases much faster with increasing energy than the short range part. In the central region, our correlation is similar to that observed ine + e ? and μp collisions at similar energy. |
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