Energy dependence of fluctuations in central Pb+Pb collisions from NA49 at the CERN SPS

The latest NA49 results on fluctuations of multiplicity and average transverse-momentum analyzed on an event-by-event basis are presented for central Pb+Pb interactions over the whole SPS energy range (20A - 158A GeV). The scaled variance of the multiplicity distribution decreases with collision ene...

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Detalles Bibliográficos
Autores principales: Rybczynski, M., Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J.G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kikola, D., Kliemant, M., Kniege, S., Kolesnikov, V.I., Kornas, E., Kowalski, M., Kraus, I., 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, St., Nicolic, V., 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., 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., Susa, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Utvic, M., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wetzler, A., Wlodarczyk, Z., Wojtaszek, A., Yoo, I.K., Zimanyi, J.
Lenguaje:eng
Publicado: 2012
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1088/0954-3899/35/10/104091
http://cds.cern.ch/record/1104799
Descripción
Sumario:The latest NA49 results on fluctuations of multiplicity and average transverse-momentum analyzed on an event-by-event basis are presented for central Pb+Pb interactions over the whole SPS energy range (20A - 158A GeV). The scaled variance of the multiplicity distribution decreases with collision energy whereas the $\Phi_{p_{T}}$ measure of $<p_T>$ fluctuations is small and independent of collision energy. Thus in central Pb+Pb collisions these fluctuations do not show an indication of the critical point of strongly interacting matter.

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