High-$p_T$ Spectra of Identified Particles Produced in Pb+Pb Collisions at 158GeV/nucleon Beam Energy

Transverse momentum spectra of $\pi^{\pm}$, $p$, $\bar{p}$, $K^{\pm}$, $K^0_s$ and $\Lambda$ at midrapidity were measured at high-$p_T$ in Pb+Pb collisions at 158 GeV/nucleon beam energy by the NA49 experiment. Particle yield ratios ($p$/$\pi$, $K$/$\pi$ and $\Lambda$/$K^0_s$) show an enhancement of...

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Detalles Bibliográficos
Autores principales: 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., 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., Georgopoulos, G., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kliemant, M., Kniege, S., Kolesnikov, V.I., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., 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., Pikna, M., 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., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wetzler, A., Wlodarczyk, Z., Yoo, I.K., Zimanyi, J.
Lenguaje:eng
Publicado: 2005
Materias:
Nuclear Physics
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysa.2006.06.068
http://cds.cern.ch/record/897902
Descripción
Sumario:Transverse momentum spectra of $\pi^{\pm}$, $p$, $\bar{p}$, $K^{\pm}$, $K^0_s$ and $\Lambda$ at midrapidity were measured at high-$p_T$ in Pb+Pb collisions at 158 GeV/nucleon beam energy by the NA49 experiment. Particle yield ratios ($p$/$\pi$, $K$/$\pi$ and $\Lambda$/$K^0_s$) show an enhancement of the baryon/meson ratio for $p_T>2GeV/c$. The nuclear modification factor $R_{CP}$ is extracted and compared to RHIC measurements and pQCD calculations.

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