Antibaryon production in sulphur-nucleus collisions at 200 GeV per nucleon
1996; Elsevier BV; Volume: 366; Issue: 1-4 Linguagem: Inglês
10.1016/0370-2693(95)01379-2
ISSN1873-2445
AutoresT. Alber, H. Appelshäuser, J. Bächler, J. Bartke, H. Białkowska, M. A. Bloomer, R. Bock, W. J. Braithwaite, D. Brinkmann, R. Brockmann, P. Bunčić, P. Chan, J. G. Cramer, P. B. Cramer, I. Derado, V. Eckardt, J. Eschke, C. Favuzzi, D. Ferenc, B. Fleischmann, P. Foka, P. Freund, M. Fuchs, M. Gaździcki, E. Gładysz, J. Grebieszkow, J. Günther, James W. Harris, M. Hoffmann, P. Jacobs, S. Kabana, K. Kadija, M. Kowalski, A. Kühmichel, J. Y. Lee, A. Ljubičić, S. Margetis, J. T. Mitchell, R. J. Morse, E. Nappi, G. Odyniec, G. Paić, A. D. Panagiotou, A. Petridis, Anne Marie Piper, F. Posa, A. M. Poskanzer, F. Pühlhofer, Wolfgang Rauch, R. Renfordt, W. Retyk, D. Röhrich, G. Roland, H. Rothard, K. Runge, A. Sandoval, N. Schmitz, E. Schmoetten, R. Sendelbach, P. Seyboth, J. Seyerlein, E. Skrzypczak, P. Spinelli, R. Stock, H. Ströbele, T. A. Trainor, G. Vasileiadis, M. Vassiliou, D. Vranić, S. Wenig, B. K. Wosiek, X. Zhu,
Tópico(s)Nuclear physics research studies
ResumoAntiproton production near midrapidity has been studied in central collisions of 32S with sulphur, silver and gold nuclei at 200 GeV per nucleon. The measured transverse mass distributions can be described by an exponential with inverse slope parameters of about 200 MeV, similar to those obtained from Λ spectra. The rapidity density increases weakly with the target mass, ranging from 0.4 to 0.7. The ratio Λp near midrapidity is approximately 1.4 on average, significantly larger than the corresponding ratio observed in proton-proton and proton-nucleus collisions.
Referência(s)