Enhanced Out-of-plane Emission of K+ Mesons observed in Au+Au Collisions at 1 AGeV
Y. Shin, W. Ahner, R. Barth, P. Beckerle, D. Brill, M. Cieslak, M. Debowski, E. Grosse, P. Koczon, B. Kohlmeyer, M. Mang, D. Miskowiec, C. Muentz, H. Oeschler, F. Puehlhofer, E. Schwab, R. Schicker, P. Senger, J. Speer, H. Stroebele, C. Sturm, K. Voelkel, A. Wagner, W. Walus, The KaoS Collaboration
Abstract
The azimuthal angular distribution of K+ mesons has been measured in Au + Au collisions at 1 AGeV. In peripheral and semi-central collisions, K+ mesons preferentially are emitted perpendicular to the reaction plane. The strength of the azimuthal anisotropy of K+ emission is comparable to the one of pions. No in-plane flow was found for K+ mesons near projectile and target rapidity.
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