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Transverse momenta of helium fragments in gold fragmentation at 10.6 GeV/nucleon |
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| Authors: | M. L. Cherry A. Da̧browska P. Deines-Jones A. J. Dubinina R. Hołyński W. V. Jones A. Olszewski K. Sengupta V. A. Smirnitski M. Szarska A. Trzupek C. J. Waddington J. P. Wefel B. Wilczynska H. Wilczynski W. Wolter B. Wosiek K. Woźniak |
| Affiliation: | 2. Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA 1. Institute of Nuclear Physics, Kawiory 26A, PL-30-055, Krakow, Poland 4. Institute of Theoretical and Experimental Physics, 117-259, Moscow, Russia 3. School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455, USA |
| Abstract: | The transverse momentum (pt) distributions of helium fragments from gold fragmentation on different nuclei of nuclear emulsion have been measured and a clear increase of average p t with target mass is seen. The p t distributions can be parameterized by a sum of three exponential functions of the form $sim {rm exp}(-p_{t}^{2}/B_{i})$ . The differences in p t distributions in interactions on different targets can be explained by different contributions of the three exponential functions. These contributions depend on the projectile breakup in the collision, and for a given degree of the projectile breakup do not depend on the target mass. |
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