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The following article is Open access
Multiplicity fluctuations in nuclear collisions at 158A GeV
Maciej Rybczyński12, (for the NA49 Collaboration):1, C Alt9, T Anticic21, B Baatar8, D Barna4, J Bartke6, L Betev9,10, H Białkowska19, A Billmeier9, C Blume9, B Boimska19, M Botje1, J Bracinik3, R Bramm9, R Brun10, P Buncić9,10, V Cerny3, P Christakoglou2, O Chvala15, J G Cramer17, P Csató4, N Darmenov18, A Dimitrov18, P Dinkelaker9, V Eckardt14, G Farantatos2, D Flierl9, Z Fodor4, P Foka7, P Freund14, V Friese7, J Gál4, M Gaździcki9,12, G Georgopoulos2, E Gładysz6, K Grebieszkow20, S Hegyi4, C Höhne13, K Kadija21, A Karev14, M Kliemant9, S Kniege9, V I Kolesnikov8, T Kollegger9, E Kornas6, R Korus12, M Kowalski6, I Kraus7, M Kreps3, M van Leeuwen1, P Lévai4, L Litov18, B Lungwitz9, M Makariev18, A I Malakhov8, C Markert7, M Mateev18, B W Mayes11, G L Melkumov8, C Meurer9, A Mischke7, M Mitrovski9, J Molnár4, S Mrówczyński12, G Pálla4, A D Panagiotou2, D Panayotov18, A Petridis2, M Pikna3, L Pinsky11, F Pühlhofer13, J G Reid17, R Renfordt9, A Richard9, C Roland5, G Roland5, M Rybczyński12, A Rybicki6,10, A Sandoval7, H Sann7, N Schmitz14, P Seyboth14, F Siklér4, B Sitar3, E Skrzypczak20, G Stefanek12, R Stock9, H Ströbele9, T Susa21, I Szentpétery4, J Sziklai4, T A Trainor17, V Trubnikov20, D Varga4, M Vassiliou2, G I Veres4,5, G Vesztergombi4, D Vranić7, A Wetzler9, Z Włodarczyk12, I K Yoo16, J Zaranek9 and J Zimányi4
The system size dependence of multiplicity fluctuations of charged particles produced in nuclear collisions at 158 A GeV was studied in the NA49 CERN experiment. The results indicate a non-monotonic dependence of the scaled variance of the multiplicity distribution with a maximum for semi-peripheral Pb+Pb interactions with number of projectile participants of about 35. This effect is not observed in a string-hadronic model of nuclear collision HIJING.
