Energy dependence of transverse momentum fluctuations in Pb+Pb collisions at the CERN Super Proton Synchrotron (SPS) at 20A to 158A GeV (CROSBI ID 150439)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Antičić, Tome ; Baatar, B. ; Barna, D. ; Bartke, J. ; Betev, L. ; Bialkowska, H. ; Blume, C. ; Boimska, B. ; Botje, M. ; Bracinik, J. ; Bunčić, Predrag ; Cerny, V. ; Christakoglou, P. ; Chung, P. ; Chvala, O. ; Cramer, J. G. ; Csato, P. ; Dinkelaker, P. ; Eckardt, V. ; Fodor, Z. ; Foka, P. ; Friese, V. ; Gal, J. ; Gazdzicki, M. ; Genchev, V. ; Gladysz, E. ; Grebieszkow, K. ; Hegyi, S. ; Hohne, C. ; Kadija, Krešo ; Karev, A. ; Kikola, D, ; Kolesnikov, V. I. ; Kornas, E. ; Korus, R. ; Kowalski, M. ; Kreps, M. ; Laszlo, A. ; Lacey, R. ; van Leeuwen, M. ; Levai, P. ; Litov, L. ; Lungwitz, B. ; Makariev, M. ; Malakhov, A. I. ; Mateev, M. ; Melkumov, G. L. ; Mischke, A. ; Mitrovski, M. ; Molnar, J. ; Mrowczynski, S. ; Nikolić, Vedran ; Palla, G. ; Panagiotou, A. D. ; Panayotov, D. ; Petridis, A. ; Peryt, W ; Pikna, M. ; Pluta, J. ; Prindle, D. ; Puhlhofer, F. ; Renfordt, R. ; Roland, C. ; Roland, G. ; Rybczynski, M. ; Rybicki, A. ; Sandoval, A. ; Schmitz, N. ; Schuster, T. ; Seyboth, P. ; Sikler, F. ; Sitar, B. ; Skrzypczak, E. ; Slodkowski, M. ; Stefanek, G. ; Stock, R. ; Strabel, C. ; Strobele, H. ; Šuša, Tatjana ; Szentpetery, I. ; Sziklai, J. ; Szuba, M. ; Szymanski, P. ; Trubnikov, V. ; Utvic, M. ; Varga, D. ; Vassiliou, M. ; Veres, G. I. ; Vesztergombi, G. ; Vranić, Danilo ; Wlodarczyk, Z. ; Wojtaszek, A. ; Yoo, I. K. ;
engleski
Energy dependence of transverse momentum fluctuations in Pb+Pb collisions at the CERN Super Proton Synchrotron (SPS) at 20A to 158A GeV
Results are presented on event-by-event fluctuations of transverse momenta pT in central Pb+Pb interactions at 20A, 30A, 40A, 80A, and 158A GeV. The analysis was performed for charged particles at forward center-of-mass rapidity (1.1<y<2.6). Three fluctuation measures were studied: the distribution of average transverse momentum M(pT) in the event, the PhipT fluctuation measure, and two-particle transverse momentum correlations. Fluctuations of pT are small and show no significant energy dependence in the energy range of the CERN Super Proton Synchrotron. Results are compared with QCD-inspired predictions for the critical point, and with the UrQMD model. Transverse momentum fluctuations, similar to multiplicity fluctuations, do not show the increase expected for freeze-out near the critical point of QCD.
NA49; SPS; QGP; fluctuation; transverse momenta
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Podaci o izdanju
79 (4)
2009.
044904-1-044904-18
objavljeno
0556-2813
10.1103/PhysRevC.79.044904
