Elliptic emission of K+ in 158A GeV Pb+Pb collisions

• Published in: Nuclear physics. A Vol. 661; no. 1; pp. 464 - 467
• Main Authors: Agnihotri, A., Angelis, A.L.S., Antonenko, V., Astakhov, V., Avdeitchikov, V., Baba, P.V.K.S., Baldine, A., Barabach, L., Barlag, C., Bathe, S., Bhatia, V.S., Bock, R., Bohne, E.-M., Bucher, D., Buijs, A., Carlen, L., Chalyshev, V., Chujo, T., Claussen, A., Djordjadze, V., Donni, P., Doubovik, I., Chenawi, K.El, Enosawa, K., Foka, P., Fokin, S., Frolov, V., Ganti, M.S., Garpman, S., Ghosh, T.K., Gupta, S.K., Guskov, B., Gustafsson, H.Å., Hrivnacova, I., Ippolitov, M., Karadjev, K., Kato, S., Kees, S., Kim, H., Kolb, B.W., Koutcheryaev, I., Krümpel, T., Kugler, A., Kulinich, P., Kurata, M., Kurita, K., Langbein, I., Mahapatra, D.P., Manko, V., Martin, M., Maximov, A., Mehdiyev, R., Mgebrichvili, G., Miake, Y., Mikhalev, D., Morrison, D., Mukhopadhyay, D.S., Naef, H., Nandi, B.K., Nayak, T.K., Neumaier, S., Nikitine, V., Nikolaev, S., Nomokonov, P., Oskarsson, A., Otterlund, I., Pachr, M., Parfenov, A., Pavliouk, S., Petracek, V., Plasil, F., Pinanaud, W., Raeven, B., Rak, J., Rao, N.K., Reygers, K., Rosselet, L., Roufanov, I., Roy, C., Rubio, J.M., Sako, H., Santo, R., Schlagheck, H., Shabratova, G., Shah, T.H., Siemiarczuk, T., Sinha, B.C., Söderström, K., Solomey, N., Stankus, P., Stüken, D., Trivedi, M.D., Tsvetkov, A., Eijndhoven, N.v., Nieuwenhuizen, G.J.v., Vinogradov, A., Vodopianov, A., Vörös, S., Wysłouch, B., Yokota, Y.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 27.12.1999
• ISSN: 0375-9474
• DOI: 10.1016/S0375-9474(99)85066-0

We have studied the azimuthal angle distributions of identified charged particles near mid-rapidity region in semi-central Pb+Pb collisions at SPS energies. Our preliminary results show that π + mesons and protons seem to be emitted in the reaction plane, while out-of-plane for K + mesons. This phenomenon might be explained by the existence of another possible effect such as in-medium potential as well as the collective motion.