| Home > Semihard scattering unraveled from collective flow at the SPS |
| Article | |
| Title | Semihard scattering unraveled from collective flow at the SPS |
| Author(s) |
Bielcikova, J ; Agakichiev, G ; Appelshäuser, H ; Baur, R ; Braun-Munzinger, P ; Cherlin, A ; Drees, A ; Esumi, S I ; Filimonov, K ; Fraenkel, Zeev ; Fuchs, C ; Glässel, P ; Hering, G ; Lenkeit, B C ; Marin, A ; Messer, F ; Messer, M ; Milosevic, J ; Miskowiec, D ; Nix, O ; Panebratsev, Yu A ; Petracek, V ; Pfeiffer, A ; Rak, J ; Ravinovich, I ; Razin, S ; Rehak, P ; Sako, H ; Saveljic, N ; Schmitz, W ; Shimansky, S S ; Socol, E ; Specht, H J ; Stachel, J ; Tilsner, H ; Tserruya, Itzhak ; Voigt, C ; Voloshin, S ; Weber, C ; Wessels, J P ; Wurm, J P ; Yurevich, V |
| Publication | 2005 |
| In: | Eur. Phys. J. C 43 (2005) 323-7 |
| DOI | 10.1140/epjc/s2005-02320-0 |
| Subject category | Nuclear Physics |
| Accelerator/Facility, Experiment | CERN SPS ; CERES NA45 |
| Abstract | A study of elliptic flow and two-particle azimuthal correlations of charged particles (0.5 <p/sub T/< 2.5 GeV/c) and high-pcollisions at 158A GeV/c. close to midrapidity, is presented. Elliptic flow (nu/sub 2/) rises linearly with p/sub T/ to a value of about 10% at 2 GeV/c. Beyond p/sub T/approx.1.5 GeV/c, the slope decreases and possibly indicates a nu/sub 2/ saturation at high pGeV/c exceed the nu/sub 2/ values by about 60% in semicentral collisions. This non-flow component is attributed to near-side and away-side jetlike correlations. While the near-side peak remains constant with centrality 0.230.03 rad, as expected for fragmentation, the away- side peak experiences broadening and disappears in central collisions. |