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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 Da?browska P Deines-Jones A J Dubinina R Ho?yński 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 Wo?niak |
| Institution: | 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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