1. Phi Production in 158 GeV/u Pb+Pb-Collisions
- Author
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Friese, V., Afanasiev, S. V., Alber, T., Appelshäuser, H., Bächler, J., Bailey, S. J., Barnby, L. S., Bartke, J., Biakowska, H., Blyth, C. O., Bock, R., Bormann, C., Brady, F. P., Brockmann, R., Bunčić, N., Bunčić, P., Caines, H. L., Cebra, D., Chan, P., Cooper, G. E., Cramer, J. G., Cramer, P. B., Csato, P., Dietz, O., Dunn, J., Eckardt, V., Eckhardt, F., Ferguson, M. I., Fischer, H. G., Flierl, D., Fodor, Z., Foka, P., Freund, P., Fuchs, M., Gabler, F., Gal, J., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Günther, J., Harris, J. W., Hegyi, S., Henkel, T., Hill, L. A., Huang, I., Howe, M. A., Hümmler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, P. G., Kadija, Krešo, Kolesnikov, V. I., Kowalski, M., Lasiuk, B., Lévai, P., Malakhov, A.I., Margetis, S., Markert, C., Melkumov, G. L., Mock, A., Molnár, J., Nelson, J. M., Odyniec, G., Palla, G., Panagiotou, A. D., Petridis, A., Piper, A., Porter, R. J., Poskanzer, A. M., Poziombka, S., Prindle, D. J., Pühlhofer, F., Rauch, W., Reid, J. G., Renfordt, R., Retyk, W., Ritter, H. G., Röhrich, D., Roland, C., Roland, G., Rudolph, H., Rybicki, A., and Sakrejda, I.
- Subjects
NA49 ,heavy ion ,phi ,TPC ,time projection chamber ,Pb+Pb ,Nuclear Theory ,High Energy Physics::Experiment ,Nuclear Experiment - Abstract
Preliminary data on phi production in central Pb+Pb collisions at 158 GeV per nucleon are presented, measured by the NA49 experiment in the hadronic decay channel phi->K+K-. At midrapidity, the kaons were seperated from pions and protons by combining dE/dx and TOF information ; in the forward rapidity range only dE/dx identification was used to obtain the rapidity distribution and a rapidity-integrated mt-spectrum. The midrapidity yield obtained is dN/dy=1.85 +- 0.3 per event, the total phi yield is estimated to be 5.0 +-0.7 per event. Comparison with published pp-data shows a slight but not very significant strangeness enhancement.
- Published
- 1997