1995•Physical Review CRequires access
Tranverse energy and charged particle multiplicity inp-nucleus collisions at 14.6 GeV/c
J. Barrette, R. Bellwied, P. Braun‐Munzinger, W. Cleland, T. M. Cormier, G. David, J. Dee, G. Diebold, O. Dietzsch, J. V. Germani, S. Gilbert, S. V. Greene, J. R. Hall, T. K. Hemmick, N. Herrmann, B. Hong, K. Jayananda, D. Kraus, B. S. Kumar, R. Lacasse, D. Lissauer, W. J. Llope, T. Ludlam, R. Majka, S. K. Mark, J. T. Mitchell, Moorthy S. Muthuswamy, E. O’Brien, C. A. Pruneau, M. Rosati, F. S. Rotondo, N. C. da Silva, D. U. J. Sonnadara, J. Stachel, H. Takai, E. M. Takagui, G. Wang, C. Woody, N. Xu, Y. Zhang, Z. Zhang, C. Zou
Open publisher page 2 citations
Abstract
We present the transverse energy distributions, d\ensuremath{\sigma}/${\mathit{dE}}_{\mathit{T}}$ and ${\mathit{dE}}_{\mathit{T}}$/d\ensuremath{\eta}, and the charged particle multiplicity distributions, d\ensuremath{\sigma}/${\mathit{dN}}_{\mathit{c}}$ and ${\mathit{dN}}_{\mathit{c}}$/d\ensuremath{\eta}, produced in p+Al and p+Pb collisions at 14.6 GeV/c. The data exhibit a weak correlation between these global variables. While a significant increase of the mean multiplicity with the mass of the target is observed, the transverse energy distributions show little target dependence. The ${\mathit{dE}}_{\mathit{T}}$/d\ensuremath{\eta} distribution shifts backward as the mass of the target increases, indicating the presence of rescattering. The data are compared to the predictions of the relativistic quantum molecular dynamic model (RQMD) and Fritiof event generators. RQMD reproduces well the main features of the data while Fritiof predicts too forward peaked transverse energy and particle multiplicity pseudorapidity distributions.