Observation of different azimuthal emission patterns for K+ and of K- mesons in Heavy Ion Collisions at 1-2 AGeV

F. Uhlig; A. Foerster; I. Boettcher; M. Debowski; F. Dohrmann; E. Grosse; P. Koczon; B. Kohlmeyer; F. Laue; M. Menzel; L. Naumann; H. Oeschler; W. Scheinast; E. Schwab; P. Senger; Y. Shin; H. Stroebele; C. Sturm; G. Surowka; A. Wagner; W. Walus

doi:10.1103/physrevlett.95.012301

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Observation of different azimuthal emission patterns for K+ and of K- mesons in Heavy Ion Collisions at 1-2 AGeV

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Abstract

Azimuthal distributions of pi+, K+ and K- mesons have been measured in Au+Au reactions at 1.5 AGeV and Ni+Ni reactions at 1.93 AGeV. In semi-central collisions at midrapidity, pi+ and K+ mesons are emitted preferentially perpendicular to the reaction plane in both collision systems. In contrast for K- mesons in Ni+Ni reactions an in-plane elliptic flow was observed for the first time at these incident energies.

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F. Uhlig, A. Foerster, I. Boettcher, M. Debowski, F. Dohrmann, E. Grosse, P. Koczon, B. Kohlmeyer, F. Laue, M. Menzel, L. Naumann, H. Oeschler, W. Scheinast, E. Schwab, P. Senger, Y. Shin, H. Stroebele, C. Sturm, G. Surowka, A. Wagner, W. Walus. 2004-11-10. Observation of different azimuthal emission patterns for K+ and of K- mesons in Heavy Ion Collisions at 1-2 AGeV. https://doi.org/10.1103/physrevlett.95.012301

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